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Need a Replacement Now? Ship by Airfreight

IC-Fluid Power has cultivated strong relationships in Asia and Europe, allowing us to streamline the shipping process. If your case is urgent, we will partner with our manufacturers to get the actuator delivered as fast as possible.

  • Faster deliveries
  • Competitive costs
  • Flexible customizations
Blue IC30 hydraulic rotary actuator, commonly used as a replacement for Parker Helac L30 actuators with counterbalance valve and foot mounting.

Find My Part Number

Enter your Helac part number in the sections separated by dashes using the tool below, or manually create a code yourself with our Helac to IC code guide.

What is My IC Series Part Number?
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Shipping Options

Sea Freight (min 1,000 lbs)Air Freight
Manufacturing8-12 weeks8-12 weeks
Shipping Time12-14 weeks2 weeks
Total Delivery Time20-26 weeks10-14 weeks

IC10 Series

The IC10 series has a max drive torque of 1,590 – 23,890 in-lbs at 3,045 psi (180 – 2,700 Nm at 210 bar) and is designed to save space while maintaining a high torque output. Given its high bearings and precision accuracy, it is a solution for many applications that involve positioning, rotating devices, steering, and more. Additionally, the IC Series was designed with high shock absorption to preserve the product’s life. It is also suitable for rotating applications where a standard rotation of 180° or 360° is needed. 

Learn More About IC10
ICFP Part NumberHelac Part Number
IC10-003-180-QHWJ-EL10-3.0-E-RF-180-S1-0-H
IC10-003-360-QHWJ-EL10-3.0-E-RF-360-S1-0-H
IC10-006-180-QHWJ-EL10-5.5-E-RF-180-S1-0-H
IC10-006-360-QHWJ-EL10-5.5-E-RF-360-S1-0-H
IC10-010-180-QHWJ-EL10-9.5-E-RF-180-S1-0-H

IC10-010-360-QHWJ-EL10-9.5-E-RF-360-S1-0-H
IC10-016-180-QHWJ-EL10-15-E-RF-180-S1-0-H
IC10-016-360-QHWJ-EL10-15-E-RF-360-S1-0-H
IC10-027-180-QHWJ-EL10-25-E-RF-180-S1-0-H
IC10-027-360-QHWJ-EL10-25-E-RF-360-S1-0-H

IC10-003-180-QHYJ-EL10-3.0-E-RF-180-S1-C-H
IC10-003-360-QHYJ-EL10-3.0-E-RF-360-S1-C-H
IC10-006-180-QHYJ-EL10-5.5-E-RF-180-S1-C-H
IC10-006-360-QHYJ-EL10-5.5-E-RF-360-S1-C-H
IC10-010-180-QHYJ-EL10-9.5-E-RF-180-S1-C-H

IC10-010-360-QHYJ-EL10-9.5-E-RF-360-S1-C-H
IC10-016-180-QHYJ-EL10-15-E-RF-180-S1-C-H
IC10-016-360-QHYJ-EL10-15-E-RF-360-S1-C-H
IC10-027-180-QHYJ-EL10-25-E-RF-180-S1-C-H
IC10-027-360-QHYJ-EL10-25-E-RF-360-S1-C-H

IC20 Series

The IC20 series has a max drive torque of 4,420 – 37,170 in-lbs at 3,045 psi (500 – 4,200 Nm at 210 bar). Given its high bearings and precision accuracy, it is a solution for many applications that involve positioning, rotating devices, steering, and more. Additionally, the IC Series was designed with high shock absorption to preserve the product’s life. It is also suitable for rotating applications where a standard rotation of 180° is needed. Foot mount to single or double flange, cantilever or straddle mount.

Learn More About IC20
ICFP Part NumberHelac Part Number
IC20-005-180-QDWJ-EL20-4.5-E-FT-180-S1-O-H
IC20-009-180-QDWJ-EL20-8.2-E-FT-180-S1-O-H
IC20-016-180-QDWJ-EL20-15-E-FT-180-S1-O-H
IC20-027-180-QDWJ-EL20-25-E-FT-180-S1-O-H
IC20-042-180-QDWJ-EL20-39-E-FT-180-S1-O-H

IC20-005-180-QDYJ-EL20-4.5-E-FT-180-S1-C-H
IC20-009-180-QDYJ-EL20-8.2-E-FT-180-S1-C-H
IC20-016-180-QDYJ-EL20-15-E-FT-180-S1-C-H
IC20-027-180-QDYJ-EL20-25-E-FT-180-S1-C-H
IC20-042-180-QDYJ-EL20-39-E-FT-180-S1-C-H

IC20-005-180-SDWJ-EL20-4.5-E-FT-180-S2-O-H
IC20-009-180-SDWJ-EL20-8.2-E-FT-180-S2-O-H
IC20-016-180-SDWJ-EL20-15-E-FT-180-S2-O-H
IC20-027-180-SDWJ-EL20-25-E-FT-180-S2-O-H
IC20-042-180-SDWJ-EL20-39-E-FT-180-S2-O-H

IC20-005-180-SDYJ-EL20-4.5-E-FT-180-S2-C-H
IC20-009-180-SDYJ-EL20-8.2-E-FT-180-S2-C-H
IC20-016-180-SDYJ-EL20-15-E-FT-180-S2-C-H
IC20-027-180-SDYJ-EL20-25-E-FT-180-S2-C-H
IC20-042-180-SDYJ-EL20-39-E-FT-180-S2-C-H

IC30 Series

The IC30 series has a max drive torque of 16,810 – 212,410 in-lbs at 3,045 psi (1,900 – 24,000 Nm at 210 bar). Given its high bearings and precision accuracy, it is a solution for many applications that involve positioning, rotating devices, steering, and more. The IC30 series is especially built for durability and maintains high performance in the toughest and most demanding applications. Additionally, the IC Series was designed with high shock absorption to preserve the product’s life. It is also suitable for rotating applications where a standard rotation of 180° or 360° is needed. 

Learn More About IC30
ICFP Part NumberHelac Part Number
IC30-019-180-QDWJ-EL30-17-E-FT-180-S1-0-H
IC30-019-360-QDWJ-EL30-17-E-FT-360-S1-0-H
IC30-028-180-QDWJ-EL30-25-E-FT-180-S1-0-H

IC30-028-360-QDWJ-EL30-25-E-FT-360-S1-0-H
IC30-047-180-QDWJ-EL30-42-E-FT-180-S1-0-H
IC30-047-360-QDWJ-EL30-42-E-FT-360-S1-0-H
IC30-073-180-QDWJ-EL30-65-E-FT-180-S1-0-H
IC30-073-360-QDWJ-EL30-65-E-FT-360-S1-0-H
IC30-105-180-QDWJ-EL30-95-E-FT-180-S1-0-H
IC30-105-360-QDWJ-EL30-95-E-FT-360-S1-0-H
IC30-140-180-QDWJ-EL30-125-E-FT-180-S1-0-H
IC30-140-360-QDWJ-EL30-125-E-FT-360-S1-0-H
IC30-180-180-QDWJ-EL30-165-E-FT-180-S1-0-H
IC30-180-360-QDWJ-EL30-165-E-FT-360-S1-0-H
IC30-240-180-QDWJ-EL30-215-E-FT-180-S1-0-H
IC30-240-360-QDWJ-EL30-215-E-FT-360-S1-0-H

IC30-019-180-QQWJ-EL30-17-E-FF-180-S1-0-H
IC30-019-360-QQWJ-EL30-17-E-FF-360-S1-0-H
IC30-028-180-QQWJ-EL30-25-E-FF-180-S1-0-H
IC30-028-360-QQWJ-EL30-25-E-FF-360-S1-0-H
IC30-047-180-QQWJ-EL30-42-E-FF-180-S1-0-H
IC30-047-360-QQWJ-EL30-42-E-FF-360-S1-0-H
IC30-073-180-QQWJ-EL30-65-E-FF-180-S1-0-H
IC30-073-360-QQWJ-EL30-65-E-FF-365-S1-0-H
IC30-105-180-QQWJ-EL30-95-E-FF-180-S1-0-H
IC30-105-360-QQWJ-EL30-95-E-FF-360-S1-0-H
IC30-140-180-QQWJ-EL30-125-E-FF-180-S1-0-H
IC30-140-360-QQWJ-EL30-125-E-FF-360-S1-0-H
IC30-180-180-QQWJ-EL30-165-E-FF-180-S1-0-H
IC30-180-360-QQWJ-EL30-165-E-FF-360-S1-0-H
IC30-240-180-QQWJ-EL30-215-E-FF-180-S1-0-H
IC30-240-360-QQWJ-EL30-215-E-FF-365-S1-0-H

IC30-019-180-QDYJ-EL30-17-E-FT-180-S1-C-H
IC30-019-360-QDYJ-EL30-17-E-FT-360-S1-C-H
IC30-028-180-QDYJ-EL30-25-E-FT-180-S1-C-H
IC30-028-360-QDYJ-EL30-25-E-FT-360-S1-C-H
IC30-047-180-QDYJ-EL30-42-E-FT-180-S1-C-H
IC30-047-360-QDYJ-EL30-42-E-FT-360-S1-C-H
IC30-073-180-QDYJ-EL30-65-E-FT-180-S1-C-H
IC30-073-360-QDYJ-EL30-65-E-FT-360-S1-C-H
IC30-105-180-QDYJ-EL30-95-E-FT-180-S1-C-H
IC30-105-360-QDYJ-EL30-95-E-FT-360-S1-C-H
IC30-140-180-QDYJ-EL30-125-E-FT-180-S1-C-H
IC30-140-360-QDYJ-EL30-125-E-FT-360-S1-C-H
IC30-180-180-QDYJ-EL30-165-E-FT-180-S1-C-H
IC30-180-360-QDYJ-EL30-165-E-FT-360-S1-C-H
IC30-240-180-QDYJ-EL30-215-E-FT-180-S1-C-H
IC30-240-360-QDYJ-EL30-215-E-FT-360-S1-C-H

IC30-019-180-QQYJ-EL30-17-E-FF-180-S1-C-H
IC30-019-360-QQYJ-EL30-17-E-FF-360-S1-C-H
IC30-028-180-QQYJ-EL30-25-E-FF-180-S1-C-H
IC30-028-360-QQYJ-EL30-25-E-FF-360-S1-C-H
IC30-047-180-QQYJ-EL30-42-E-FF-180-S1-C-H
IC30-047-360-QQYJ-EL30-42-E-FF-360-S1-C-H
IC30-073-180-QQYJ-EL30-65-E-FF-180-S1-C-H
IC30-073-360-QQYJ-EL30-65-E-FF-360-S1-C-H
IC30-105-180-QQYJ-EL30-95-E-FF-180-S1-C-H
IC30-105-360-QQYJ-EL30-95-E-FF-360-S1-C-H
IC30-140-180-QQYJ-EL30-125-E-FF-180-S1-C-H
IC30-140-360-QQYJ-EL30-125-E-FF-360-S1-C-H
IC30-180-180-QQYJ-EL30-165-E-FF-180-S1-C-H
IC30-180-360-QQYJ-EL30-165-E-FF-360-S1-C-H
IC30-240-180-QQYJ-EL30-215-E-FF-180-S1-C-H
IC30-240-360-QQYJ-EL30-215-E-FF-360-S1-C-H

IC30-019-180-SDWJ-EL30-17-E-FT-180-S2-0-H
IC30-019-360-SDWJ-EL30-17-E-FT-360-S2-0-H
IC30-028-180-SDWJ-EL30-25-E-FT-180-S2-0-H
IC30-028-360-SDWJ-EL30-25-E-FT-360-S2-0-H
IC30-047-180-SDWJ-EL30-42-E-FT-180-S2-0-H
IC30-047-360-SDWJ-EL30-42-E-FT-360-S2-0-H
IC30-073-180-SDWJ-EL30-65-E-FT-180-S2-0-H
IC30-073-360-SDWJ-EL30-65-E-FT-360-S2-0-H
IC30-105-180-SDWJ-EL30-95-E-FT-180-S2-0-H
IC30-105-360-SDWJ-EL30-95-E-FT-360-S2-0-H
IC30-140-180-SDWJ-EL30-125-E-FT-180-S2-0-H
IC30-140-360-SDWJ-EL30-125-E-FT-360-S2-0-H
IC30-180-180-SDWJ-EL30-165-E-FT-180-S2-0-H
IC30-180-360-SDWJ-EL30-165-E-FT-360-S2-0-H
IC30-240-180-SDWJ-EL30-215-E-FT-180-S2-0-H
IC30-240-360-SDWJ-EL30-215-E-FT-360-S2-0-H

IC30-019-180-QQWJ-EL30-17-E-FF-180-S2-0-H
IC30-019-360-QQWJ-EL30-17-E-FF-360-S2-0-H
IC30-028-180-QQWJ-EL30-25-E-FF-180-S2-0-H
IC30-028-360-QQWJ-EL30-25-E-FF-360-S2-0-H
IC30-047-180-QQWJ-EL30-42-E-FF-180-S2-0-H
IC30-047-360-QQWJ-EL30-42-E-FF-360-S2-0-H
IC30-073-180-QQWJ-EL30-65-E-FF-180-S2-0-H
IC30-073-360-QQWJ-EL30-65-E-FF-360-S2-0-H
IC30-105-180-QQWJ-EL30-95-E-FF-180-S2-0-H
IC30-105-360-QQWJ-EL30-95-E-FF-360-S2-0-H
IC30-140-180-QQWJ-EL30-125-E-FF-180-S2-0-H
IC30-140-360-QQWJ-EL30-125-E-FF-360-S2-0-H
IC30-180-180-QQWJ-EL30-165-E-FF-180-S2-0-H
IC30-180-360-QQWJ-EL30-165-E-FF-360-S2-0-H
IC30-240-180-QQWJ-EL30-215-E-FF-180-S2-0-H
IC30-240-360-QQWJ-EL30-215-E-FF-360-S2-0-H

IC30-019-180-SDYJ-EL30-17-E-FT-180-S2-C-H
IC30-019-360-SDYJ-EL30-17-E-FT-360-S2-C-H
IC30-028-180-SDYJ-EL30-25-E-FT-180-S2-C-H
IC30-028-360-SDYJ-EL30-25-E-FT-360-S2-C-H
IC30-047-180-SDYJ-EL30-42-E-FT-180-S2-C-H

IC30-047-360-SDYJ-EL30-42-E-FT-360-S2-C-H
IC30-073-180-SDYJ-EL30-65-E-FT-180-S2-C-H
IC30-073-360-SDYJ-EL30-65-E-FT-360-S2-C-H
IC30-105-180-SDYJ-EL30-95-E-FT-180-S2-C-H
IC30-105-360-SDYJ-EL30-95-E-FT-360-S2-C-H
IC30-140-180-SDYJ-EL30-125-E-FT-180-S2-C-H
IC30-140-360-SDYJ-EL30-125-E-FT-360-S2-C-H
IC30-180-180-SDYJ-EL30-165-E-FT-180-S2-C-H
IC30-180-360-SDYJ-EL30-165-E-FT-360-S2-C-H
IC30-240-180-SDYJ-EL30-215-E-FT-180-S2-C-H
IC30-240-360-SDYJ-EL30-215-E-FT-360-S2-C-H

IC30-019-180-SQYJ-EL30-17-E-FF-180-S2-C-H
IC30-019-360-SQYJ-EL30-17-E-FF-360-S2-C-H
IC30-028-180-SQYJ-EL30-25-E-FF-180-S2-C-H
IC30-028-360-SQYJ-EL30-25-E-FF-360-S2-C-H
IC30-047-180-SQYJ-EL30-42-E-FF-180-S2-C-H
IC30-047-360-SQYJ-EL30-42-E-FF-360-S2-C-H
IC30-073-180-SQYJ-EL30-65-E-FF-180-S2-C-H
IC30-073-360-SQYJ-EL30-65-E-FF-360-S2-C-H
IC30-105-180-SQYJ-EL30-95-E-FF-180-S2-C-H
IC30-105-360-SQYJ-EL30-95-E-FF-360-S2-C-H
IC30-140-180-SQYJ-EL30-125-E-FF-180-S2-C-H
IC30-140-360-SQYJ-EL30-125-E-FF-360-S2-C-H
IC30-180-180-SQYJ-EL30-165-E-FF-180-S2-C-H
IC30-180-360-SQYJ-EL30-165-E-FF-360-S2-C-H
IC30-240-180-SQYJ-EL30-215-E-FF-180-S2-C-H
IC30-240-360-SQYJ-EL30-215-E-FF-360-S2-C-H

IC40 Series

The IC40 series has a max drive torque of 24,780 – 59,290 in-lbs at 3,045 psi (2,800 – 6,700 Nm at 210 bar). Given its high bearings and precision accuracy, it is a solution for many applications that involve positioning, rotating devices, steering, and more. The IC40 series also achieves high performance for applications needing to consistently maintain high torque outputs. Additionally, the IC Series was designed with high shock absorption to preserve the product’s life. It is also suitable for rotating applications where a standard rotation of 200° or 220° is needed. 

Learn More About IC40
ICFP Part NumberHelac Part Number
IC40-030-220-HDWJ-ET20-25-E-FT-220-S1-O-H
IC40-050-220-HDWJ-ET20-45-E-FT-220-S1-O-H
IC40-067-220-HDWJ-ET20-60-E-FT-220-S1-O-H

IC40-028-220-HDYJ-ET20-25-E-FT-220-S1-C-H
IC40-050-220-HDYJ-ET20-45-E-FT-220-S1-C-H
IC40-067-220-HDYJ-ET20-60-E-FT-220-S1-C-H

IC40-030-220-HWJ-ET30-27-E-FT-220-S1-O-H

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Home / Products / Rotary Actuators / Rotary Actuators – IC Series / Rotary Actuators — Counterbalance Valve Block
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IC-Fluid Power, Inc. logo International Hydraulic Components.

Rotary Actuators – Counterbalance Valve Block

The IC Series counterbalance valve block is an optional load-holding valve assembly that bolts directly to IC Series hydraulic rotary actuators to provide load stability, prevent unintended motion, and protect against overpressure. By creating back pressure in the hydraulic line, it holds suspended loads in place during hydraulic failure or external force, making it a critical safety component for applications like aerial work platforms and man lifts. Three models are available: the 21260A (aluminum, 3,300 psi relief), the 21270 (steel, 3,300 psi relief), and the 21280 (steel, 3,625 psi relief). All three use a 3:1 pilot ratio. Valve blocks can be ordered with the actuator or added later.

21260A Counterbalance Valve Block

Valve blocks are configured from aluminum and secured to a flat mounting pad on the actuator housing with three bolts. See each individual series page for specific valve locations. The pilot ratio is 3:1. The valves are set to relieve at 3,300 psi (228 bar).

21270 Counterbalance Valve Block

Valve blocks are configured from steel and secured to a flat mounting pad on the actuator housing with three bolts. See each individual series page for specific valve locations. The pilot ratio is 3:1. The valves are set to relieve at 3,300 psi (228 bar).

21280 Counterbalance Valve Block

Valve blocks are configured from steel and secured to a flat mounting pad on the actuator housing. Valve locations and plumbing routing differ among sizes. See each individual series page for specific valve locations. The pilot ratio is 3:1. The valves are set to relieve at 3,625 psi (250 bar).

IC Series Product Page

Hydraulic rotary actuators are vital components in various industrial applications, often requiring precise control over heavy loads. To enhance the functionality and safety of these actuators, they can be accessorized with a counterbalance, or load-holding, valve. This option ensures the stability of the load by preventing unintended movement, especially in case of a hydraulic hose failure. By creating back pressure within the hydraulic line, these valves play a crucial role in controlling the load, thus averting any accidental movements of the actuator.

Often, the counterbalance valve is used as a safety device when the safety of humans is involved by protecting the actuator and thereby the person in case of a downstream hydraulic failure or by an upstream external force. Take, for example, a man lift where a person is in a basket. If there is hydraulic failure somewhere before the basket, the basket will stay in its place. If there is a force excerpted on the same basket if the operator hits an object while moving, the basket will rotate to protect its occupant.

Furthermore, due to the small oil volume (displacement) of the rotary actuator, temperature swings between night and day can cause substantial movement to whatever is mounted to the actuator if the actuator is not actuated. So, the counterbalance valve protects the actuator from overpressure applied to the actuator, or failure of a downstream component.

On some models, counterbalance valves can also be added to the system post purchase. This option provides a practical solution for those who may need to upgrade their existing system’s capabilities. Whether incorporated during the design stage or added later, these components can enhance the control, stability, and safety of hydraulic actuators across a wide range of industrial applications.

IC-Fluid Power, Inc. supports many applications including mobile, marine & offshore, mining, packaging, plastic & injection molding, construction, agriculture, energy, and more. 

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Home / Products / Rotary Actuators / Rotary Actuators – IC Series / Rotary Actuators — IC40 Series
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IC-Fluid Power, Inc. logo International Hydraulic Components.

Rotary Actuators – IC40 Series

The IC40 is the IC Series helical-spline hydraulic rotary actuator built for the refuse, waste, and recycling tipper market. It offers a drive torque from 24,780 to 59,290 in-lb (2,800 to 6,700 Nm) at 3,045 psi (210 bar) across three sizes. It features a unique 200° or 220° of rotation to fully empty bin contents. The IC40 is a direct drop-in replacement for the Helac T-series and ships in 20–26 weeks standard or 10–14 weeks via expedited airfreight.

Given its high bearings and precision accuracy, it is a solution for many applications that involve positioning, rotating devices, steering, and more. The IC40 series also achieves high performance for applications needing to consistently maintain high torque outputs. Additionally, the IC Series was designed with high shock absorption to preserve the product’s life.

Hydraulic Rotary-Linear Actuator Standard Features:

  • Standard Rotation: 200° / 220°
  • Max Drive Torque: 24,780 – 59,290 in-lbs at 3,045 psi (2,800 – 6,700 Nm at 210 bar)
  • Max Holding Torque: 53,980 – 126,560 in-lbs at 3,045 psi (6,100 – 14,300 Nm at 210 bar)
  • Max Straddle Moment: 37,170 – 89,390 in-lbs (4,200 – 10,100 Nm)
  • Mounting: Foot
View Technical Data of Specific Models
Find Your Helac Replacement Part
Model285067
Drive Torque *
in-lbs (Nm)		24,780 (2,800)44,250 (5,000)59,290 (6,700)
Holding Torque *
in-lbs (Nm)		53,980 (6,100)93,810 (10,600)126,560 (14,300)
Standard Rotation220°220°200°
Max Straddle Moment *
in-lbs (Nm)		37,170 (4,200)67,260 (7,600)89,390 (10,100)
Radial Capacity
lbs (kg)		4,490 (2,040)6,900 (3,130)8,590 (3,900)
Axial Capacity
lbs (kg)		4,490 (2,040)6,900 (3,130)8,590 (3,900)
* in-lbs at 3,045 psi (Nm at 210 bar)

Straddle Mounting

Straddle mounting is ideal for loads needing support at both ends of the shaft. Similar to cantilever mounting, the top of the load is bolted to the shaft flange. Then, the bottom is bolted to the end cap flange.

Helical Spline Hydraulic Rotary Actuators

Our rotary actuators are the helical spline design. This means, a piston and a helix, or sliding spline, work together to convert the linear motion of the piston into rotational motion. Composed of two moving parts and some form of housing, the sliding helical splined gear concept within the actuator is used in many applications where a rotary movement is required. Helical Spline Actuators function when the piston is axially displaced using hydraulic pressure causing simultaneous rotation of the piston. Standard amounts of rotation are 200° and 220°. The primary benefit to this type product compared to alternative designs such as linkages using hydraulic cylinders (linear actuators) is its compact design.

Code Guide:

1SeriesIC40 Series
2Torque (output Torque/100) in Nm 28, 50, 67
3Angle (other angles available)200°, 220°
4OutputH spindle
5MountQ front flange
6Counterbalance ValveY with valve
W without valve
7Thread PatternBLANK metric
E imperial

IC-Fluid Power, Inc. supports many applications including mobile, marine & offshore, mining, packaging, plastic & injection molding, construction, agriculture, energy, and more. 

Related Products

Home / Products / Rotary Actuators / Rotary Actuators – IC Series / Rotary Actuators — IC30 Series
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IC30 Hydraulic Rotary Actuator FAQs

IC30 covers up to 24,000 Nm (212,410 in-lbs) of drive torque at 210 bar (3,045 psi) across eight sizes.

The IC30 offers the highest torque in the IC Series, delivering a range of 1,900 to 24,000 Nm (16,810 to 212,410 in-lbs) at 210 bar (3,045 psi). This makes the IC30 very suitable for heavy-duty applications like mining equipment and material-handling. 

IC30 offers 180º and 360º of rotation.

All eight sizes of the IC30 are available as either 180º or 360º , depending on whether the application requires either half-turn or full-turn motion. 

Pressure, torque, rotation, external loads, and environment OR your existing Helac part number.

For correct sizing, you should specify system pressure, required torque (including peak/holding), desired rotation, expected radial and axial loads and moments, and environmental conditions. With these specs, our engineering team or technical charts can select the most appropriate configuration and size.

Alternatively, if you already have an existing Helac part number, you can use our widget or charts to find a drop-in replacement. For other popular brands such as SJH and HKS, please reach out to our engineering team.

IC-Fluid Power, Inc. logo International Hydraulic Components.

Rotary Actuators – IC30 Series

The IC30 is the highest-torque model in the IC Series of helical-spline hydraulic rotary actuators, with drive torque from 16,810 to 212,410 in-lb (1,900 to 24,000 Nm) at 3,045 psi (210 bar) across eight sizes. Standard rotation is 180° or 360°, and the IC30 is offered with foot or flange mounting, and cantilever or straddle shaft support. Built for heavy-duty applications like mining and material handling, it’s a direct drop-in replacement for the Helac L30 series and ships in 20–26 weeks standard or 10–14 weeks via expedited airfreight.

Given its high bearings and precision accuracy, it is a solution for many applications that involve positioning, rotating devices, steering, and more. The IC30 series is especially built for durability and maintains high performance in the toughest and most demanding applications. Additionally, the IC Series was designed with high shock absorption to preserve the product’s life.

Hydraulic Rotary-Linear Actuator Standard Features:

  • Standard Rotation: 180° / 360°
  • Max Drive Torque: 16,810 – 212,410 in-lbs at 3,045 psi (1,900 – 24,000 Nm at 210 bar)
  • Max Holding Torque: 43,360 – 522,190 in-lbs at 3,045 psi (4,900 – 59,000 Nm at 210 bar)
  • Max Straddle Moment: 169,930 – 2,270,210 in-lbs (19,200 – 256,000 Nm)
  • Max Cantilever Moment: 46,020 – 645,210 in-lbs (5,200 – 72,900 Nm)
  • Mounting: Foot, Flange
View Additional Technical Data
Find Your Helac Replacement Part
Model19284773
Drive Torque *
in-lbs (Nm)		16,810 (1,900)24,780 (2,800)41,590 (4,700)64,610 (7,300)
Holding Torque*
in-lbs (Nm)		43,360 (4,900)60,180 (6,800)106,200 (12,000)159,310 (18,000)
Max Cantilever Moment *
in-lbs (Nm)		46,020 (5,200)62,840 (7,100)105,320 (11,900)162,850 (18,400)
Max Straddle Moment *
180° in-lbs (Nm)		118,590 (13,400)149,570 (16,900)272,600 (30,800)423,060 (47,800)
Max Straddle Moment *
360° in-lbs (Nm)		169,930 (19,200)217,720 (24,600)401,820 (45,400)630,170 (71,200)
Radial Capacity
lbs (kg)		3,960 (1,800)5,070 (2,300)7,930 (3,600)11,020 (5,000)
Axial Capacity
lbs (kg)		3,080 (1,400)3,960 (1,800)5,950 (2,700)7,930 (3,600)
Model105140180240
Drive Torque *
in-lbs (Nm)		92,930 (10,500)123,910 (14,000)159,310 (18,000)212,410 (24,000)
Holding Torque * in-lbs (Nm)230,110 (26,000)309,770 (35,000)407,130 (46,000)522,190 (59,000)
Max Cantilever Moment *
in-lbs (Nm)		261,090 (29,500)343,400 (38,800)494,750 (55,900)645,210 (72,900)
Max Straddle Moment *
180° in-lbs (Nm)		664,690 (75,100)875,330 (98,900)1,115,020 (130,500)1,504,620 (170,000)
Max Straddle Moment *
360° in-lbs (Nm)		986,850 (111,500)1,292,200 (146,000)1,749,790 (197,700)2,270,210 (256,500)
Radial Capacity
lbs (kg)		14,990 (6,800)18,070 (8,200)22,040 (10,000)26,010 (11,800)
Axial Capacity
lbs (kg)		9,920 (4,500)13,000 (5,900)14,990 (6,800)18,070 (8,200)
* in-lbs at 3,045 psi (Nm at 210 bar)

Cantilever Mounting

The load is securely bolted to the shaft flange. Cantilever mounting is ideal for loads needing support at only one end of the shaft, and is not advised for aerial work platforms or other critical safety-related applications. 

Straddle Mounting

Straddle mounting is ideal for loads needing support at both ends of the shaft. Similar to cantilever mounting, the top of the load is bolted to the shaft flange. Then, the bottom is bolted to the end cap flange.

Counterbalance Valve

Actuators can be configured with a counterbalance, or load holding valve, to provide load stability and prevent the actuator from reaching excessive torque outputs. Producing back pressure in a hydraulic line gives control over the suspended load to stop unintended motion of the actuator. Valve blocks are available in steel and aluminum, and may be purchased separately if required at a later time. 

Helical Spline Hydraulic Rotary Actuators

Our rotary actuators are the helical spline design. This means, a piston and a helix, or sliding spline, work together to convert the linear motion of the piston into rotational motion. Composed of two moving parts and some form of housing, the sliding helical splined gear concept within the actuator is used in many applications where a rotary movement is required. Helical Spline Actuators function when the piston is axially displaced using hydraulic pressure causing simultaneous rotation of the piston. Standard amounts of rotation are 90°, 180°, and 360°. The primary benefit to this type product compared to alternative designs such as linkages using hydraulic cylinders (linear actuators) is its compact design.

Code Guide:

1SeriesIC30 Series
2Torque (output Torque/100) in Nm 19, 28, 47, 73, 105, 140, 180, 240
3Angle (other angles available)180°, 360°
4OutputQ front flange
S double flange
Z shaft output
5MountD foot
H rear flange
Q front flange
D rail
6Counterbalance ValveY with valve
W without valve
7Thread PatternBLANK metric
E imperial

IC-Fluid Power, Inc. supports many applications including mobile, marine & offshore, mining, packaging, plastic & injection molding, construction, agriculture, energy, and more. 

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Home / Products / Rotary Actuators / Rotary Actuators – IC Series / Rotary Actuators — IC20 Series
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IC20 Hydraulic Rotary Actuator FAQs

IC20 offers higher torque than IC10 for 180º applications.

If you only need 180º of rotation, but more torque, the IC20 would be your preferred model. It has a higher maximum drive torque of up to 4,200 Nm (37,170 Ibs-in) versus the IC10’s 2,700 Nm (23,890 in-lbs). However, the IC20 is limited to 180º, rather than the IC10’s 180º and 360º. 

IC20 supports 180º of rotation and utilizes common foot and flange mounting patterns.

The series is offered with 180º rotation, well-suited for many steering, positioning, and tipping applications. Mounting configurations include common foot and flange styles for both new and replacement use cases. 

Yes, the IC20 is intended to function as a drop-in replacement to major OEM models. 

Torque, rotation, and mounting options are comparable with other helical spline actuators, so the IC20 can often be used as an interchangeable model with minimal or no mechanical changes, including the Helac L20 series. 

Pressure, torque, rotation, external loads, and environment OR your existing Helac L20 part number.

For correct sizing, you should specify system pressure, required torque (including peak/holding), desired rotation, expected radial and axial loads and moments, and environmental conditions. With these specs, our engineering team or the IC20 technical data can highlight the most appropriate configuration and size.

Alternatively, if you already have an existing Helac L20 part number, you can use our widget or charts to find a compatible IC Series actuator. For other popular brands such as SJH and HKS, please reach out to our engineering team.

IC-Fluid Power, Inc. logo International Hydraulic Components.

Rotary Actuators – IC20 Series

The IC20 is the mid-size model in the IC Series of helical-spline hydraulic rotary actuators, with drive torque from 4,420 to 37,170 in-lb (500 to 4,200 Nm) at 3,045 psi (210 bar) and standard rotation in 180°. Compared to the IC10, the IC20 delivers more torque in 180° applications, and supports both cantilever and straddle mounting on a foot-mount body. It’s a direct drop-in replacement for the Helac L20 series and ships in 20–26 weeks standard or 10–14 weeks via expedited airfreight.

Given its high bearings and precision accuracy, it is a solution for many applications that involve positioning, rotating devices, steering, and more. Additionally, the IC Series was designed with high shock absorption to preserve the product’s life.

Hydraulic Rotary-Linear Actuator Standard Features:

  • Standard Rotation: 180°
  • Max Drive Torque: 4,420 – 37,170 in-lbs at 3,045 psi
    (500 – 4,200 Nm at 210 bar)
  • Max Holding Torque: 11,500 – 92,930 in-lbs at 3,045 psi
    (1,300 – 10,500 Nm at 210 bar)
  • Max Straddle Moment: 22,120 – 279,680 in-lbs (2,500 – 31,600 Nm)
  • Max Cantilever Moment: 12,030 – 139,840 in-lbs (1,360 – 15,800 Nm)
  • Mounting: Foot
View Additional Technical Data
Find Your Helac Replacement Part
Model59162742
Drive Torque
in-lbs (Nm)		4,420 (500)7,960 (900)14,160 (1,600)23,710 (2,680)37,170 (4,200)
Holding Torque
in-lbs (Nm)		11,500 (1,300)21,240 (2,400)38,940 (4,400)62,840 (7,100)92,930 (10,500)
Max Straddle Moment *
in-lbs (Nm)		22,120 (2,500)39,820 (4,500)90,270 (10,200)145,150 (16,400)279,680 (31,600)
Max Cantilever Moment *
in-lbs (Nm)		12,030 (1,360)21,940 (2,480)47,970 (5,420)100,010 (11,300)139,840 (15,800)
Radial Capacity
lbs (kg)		3,040 (1,380)4,690 (2,130)9,230 (4,190)12,300 (5,580)21,010 (9,530)
Axial Capacity
lbs (kg)		1,100 (500)1,490 (680)2,200 (1,000)3,080 (1,400)3,900 (1,770)
* in-lbs at 3,045 psi (Nm at 210 bar)

Cantilever Mounting

The load is securely bolted to the shaft flange. Cantilever mounting is ideal for loads needing support at only one end of the shaft, and is not advised for aerial work platforms or other critical safety-related applications. 

Straddle Mounting

Straddle mounting is ideal for loads needing support at both ends of the shaft. Similar to cantilever mounting, the top of the load is bolted to the shaft flange. The bottom can be secured by a tie rod passed through the shaft bore (IC20 Series only) or bolted to the end cap flange. 

Counterbalance Valve

Actuators can be configured with a counterbalance, or load holding valve, to provide load stability and prevent the actuator from reaching excessive torque outputs. Producing back pressure in a hydraulic line gives control over the suspended load to stop unintended motion of the actuator. Valve blocks are available in steel and aluminum, and may be purchased separately if required at a later time. 

Helical Spline Hydraulic Rotary Actuators

Our rotary actuators are the helical spline design. This means, a piston and a helix, or sliding spline, work together to convert the linear motion of the piston into rotational motion. Composed of two moving parts and some form of housing, the sliding helical splined gear concept within the actuator is used in many applications where a rotary movement is required. Helical Spline Actuators function when the piston is axially displaced using hydraulic pressure causing simultaneous rotation of the piston. Standard amounts of rotation is 180°. The primary benefit to this type product compared to alternative designs such as linkages using hydraulic cylinders (linear actuators) is its compact design.

Code Guide:

1SeriesIC20 Series
2Torque (output Torque/100) in Nm 5, 9, 16, 27, 72
3Angle (other angles available)180°
4OutputQ front flange
S double flange
5MountD foot flange
M straddle
6Counterbalance ValveY with valve
W without valve
7Thread PatternBLANK metric
E imperial

IC-Fluid Power, Inc. supports many applications including mobile, marine & offshore, mining, packaging, plastic & injection molding, construction, agriculture, energy, and more. 

Related Products

Home / Products / Rotary Actuators / Rotary Actuators – IC Series / Rotary Actuators — IC10 Series
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IC10 Hydraulic Rotary Actuator FAQs

The IC10 offers a max drive torque of 180 to 2,700 Nm at 210 bar with 180º and 360º options.

IC10 rotary actuators provide 180 to 2,700 Nm (1,590  to 23,890 in-lbs) of drive torque at 210 bar (3,045 psi) across six sizes, with standard 180º and 360º rotation options. This allows for compact applications needing half-turn or full-turn motion in a small envelope. 

Yes, the IC10 is designed to be used as a direct replacement for many Helac L10 models.

This unit was  developed to be interchangeable with leading helical-spline actuators, including the Helac L10. Torque, rotation, mounting interfaces, and porting can be checked directly against data sheets and specific installation requirements, but in many cases, an IC10 can replace an L10 with minimal or no mechanical changes. 

Pick the smallest IC10 whose rated torque at your system pressure meets your peak load (with safety factor).

Decide the required output torque (both continuous and peak), system pressure (up to 210 bar / 3,045 psi), and rotation. Then, select the smallest IC10 size whose rated torque at your working pressure exceeds that requirement, verifying that bearing load capacities and mounting dimensions also fit your design. If you are looking for a drop-in replacement, use our widget or charts to find the comparable model. 

Pressure, torque, rotation, external loads, and environment OR your existing Helac L10 part number.

For correct sizing, you should specify system pressure, required torque (including peak/holding), desired rotation, expected radial and axial loads and moments, and environmental conditions. With these specs, our engineering team or the IC10 technical data can highlight the most appropriate configuration and size.

Alternatively, if you already have an existing Helac L10 part number, you can use our widget or charts to find a compatible IC Series actuator. For other popular brands such as SJH and HKS, please reach out to our engineering team.

IC-Fluid Power, Inc. logo International Hydraulic Components.

Rotary Actuators – IC10 Series

The IC10 is the most compact model in the IC Series of helical-spline hydraulic rotary actuators. It features a drive torque from 1,590 to 23,890 in-lb (180 to 2,700 Nm) at 3,045 psi (210 bar). Standard rotations include 180° or 360°. It uses a flange-mount, cantilever-style design built to save space without sacrificing torque output. The IC10 is a direct drop-in replacement for the Helac L10 series and ships in 20-26 weeks standard or 10-14 weeks via expedited airfreight.

Given its high bearings and precision accuracy, it is a solution for many applications that involve positioning, rotating devices, steering, and more. Additionally, the IC Series was designed with high shock absorption to preserve the product’s life.

Hydraulic Rotary-Linear Actuator Standard Features:

  • Standard Rotation: 180° / 360°
  • Max Drive Torque: 1,590 – 23,890 in-lbs at 3,045 psi (180 – 2,700 Nm at 210 bar)
  • Max Holding Torque: 5,570 – 89,130 in-lbs at 3,045 psi (640 – 9,400 Nm at 210 bar)
  • Max Cantilever Moment: 4,950 – 99,120 in-lbs (560 – 11,200 Nm)
  • Mounting: Flange
View Additional
Technical Data
Find Your Helac Replacement Part
Model236101627
Drive Torque *
in-lbs (Nm)		1,590 (180)2,830 (320)5,310 (600)8,850 (1,000)14,160 (1,600)23,890 (2,700)
Holding Torque *
in-lbs (Nm)		5,570 (630)10,620 (1,200)16,180 (1,900)33,630 (3,800)50,440 (5,700)89,190 (9,400)
Max Cantilever Moment
in-lbs (Nm)		4,950 (560)8,850 (1,000)19,470 (2,200)49,560 (5,600)79,650 (9,000)99,120 (11,200)
Radial Capacity
lbs (kg)		1,980 (900)2,970 (1,350)4,070 (1,850)7,930 (3,600)10,970 (4,980)14,770 (6,700)
Axial Capacity
lbs (kg)		1,980 (900)2,970 (1,350)4,070 (1,850)7,930 (3,600)10,970 (4,980)14,770 (6,700)
* in-lbs at 3,045 psi (Nm at 210 bar)

Cantilever Mounting

The load is securely bolted to the shaft flange. Cantilever mounting is ideal for loads needing support at only one end of the shaft, and is not advised for aerial work platforms or other critical safety-related applications. 

Optional Counterbalance Valve Block

Actuators can be configured with a counterbalance, or load holding valve, to provide load stability and prevent the actuator from reaching excessive torque outputs. Producing back pressure in a hydraulic line gives control over the suspended load to stop unintended motion of the actuator. Valve blocks are available in steel and aluminum, and may be purchased separately if required at a later time. 

Helical Spline Hydraulic Rotary Actuators:

Our rotary actuators are the helical spline design. This means, a piston and a helix, or sliding spline, work together to convert the linear motion of the piston into rotational motion. Composed of two moving parts and some form of housing, the sliding helical splined gear concept within the actuator is used in many applications where a rotary movement is required. Helical Spline Actuators function when the piston is axially displaced using hydraulic pressure causing simultaneous rotation of the piston. Standard amounts of rotation are 90°, 180°, and 360°. The primary benefit to this type product compared to alternative designs such as linkages using hydraulic cylinders (linear actuators) is its compact design.

Code Guide:

1SeriesIC10 Series
2Torque (output Torque/100) in Nm 2, 3, 6, 10, 16, 27
3Angle (other angles available)180°, 360°
4OutputQ front flange
5MountH rear flange
6Counterbalance ValveY with valve
W without valve
7Thread PatternBLANK metric
E imperial

IC-Fluid Power, Inc. supports many applications including mobile, marine & offshore, mining, packaging, plastic & injection molding, construction, agriculture, energy, and more. 

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Home / Products / Valve Actuators / Valve Actuators — HyRAV Rotary Actuator
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Eckart Logo.

Rotary Actuators – HyRAV Rotary Actuator

The HyRAV model is Eckart’s hydraulic quarter-turn valve actuator, built for automating valves in demanding industrial environments. The series covers 12 drive sizes with torque up to 250,000 Nm at 210 bar. Rotation is offered in 0–90°, 120°, or 180°+, with positioning accuracy under 0.5° of full scale. Both double-acting and spring-return (fail-safe) versions are available, with operating times from 0.5 to 200 seconds and fail-safe response as fast as 0.1 seconds.

The valve actuator functions according to the principle of helical gears. The compact and concentric design of the valve has proven to be excellent in practice and provides the customer with space savings as well as reliability. Moreover, the HyRAV series can be applied in the most severe conditions, i.e. from high vibrations to severe environmental locations, and further, provides a powerful, safe  solution for automation of valves. Additionally, the series is easily adapted to all types of valves, what is a result of the generous design of the hollow shaft and adaptable flange types.

Advantages at a Glance:

  • 12 drive sizes with torques up to 250,000 Nm at 210 bar
  • Small dimensions, slim and compact style
  • Smallest footprint to torque ratio
  • By concentric design are no radial forces transmitted to the valve
  • Optimum cushioning protects the valve and actuator
  • Easy installation and adjustment to each valve
  • Maintenance free, no lubrication required
  • Suitable for on/off, control and failsafe operation
  • High repeat accuracy and very simple control of the flow rates
  • Extremely trip possible (eg. 90° in 0.2 sec.)
  • Robust against extreme environmental conditions
  • Durable against vibrations

Technical Data (Standard – Others on Request)

Valve Actuator Type

Helical gear – double acting or single acting (spring return)

Max. Allowable Operating Pressure

210 bar / 3,045 psi

Min. Operating Pressure Required

5 to 10 bar / 72.5 to 145 psi

Angle of Rotation

Quarter-turn / 0-90º, 120º, or 180º +

Position of Accuracy

< 0.5º of full scale

Medium

Standard hydraulic oil: mineral oil of group

Ambient Temperature

-25 to 70ºC / -13 to 158ºF

Protection Class

IP68

Valve Attachment Flange

EN ISO 5211

Double Acting Lifetime

>100,000 operations

Single Acting Lifetime (Fail-Safe)

Dependent on the desired spring package

Duty Rating

S1 – 100%

Operating Time Range

0.5 sec. to 200 sec.

Max. Speed Fail-Safe

As fast as 0.1 seconds
(Dependent on the valve actuator size)

Certificates/Approvals

ATEX, SIL2/3, further in processing/planning, and as required

Materials, Standard

Steel, GGG

Seal Material, Standard

PU / NBR

Applications

Industries

Applications

Power

Power plants (coal, gas, oil, nuclear)
Hydro electric power plants
Geothermal power plants
Solar thermal power plants
Biogas power plants

Oil & Gas

Exploration, offshore
Refineries
Pipelines
Tank farms

Water

Steel hydraulics construction
Water treatment plants
Sewage treatment plants
Drinking water disruption

Industrial
& Special Solutions

Shipbuilding & submarines
Chemical / pharmaceutical industry
Food industry
Air conditioning
Steel mills

Eckart is a supplier and valve rotary actuator manufacturer for various applications including construction, mechanical, marine, and industrial.

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Home / Products / Rotary Actuators / Hydraulic Rotary Actuators — E1
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E1 Hydraulic Rotary Actuator FAQs

The E1 is more suited to lower pressure, lightweight applications than the SM4.

The E1 offers higher torque at the same pressure ratings than the SM4, but has a lower maximum pressure rating. Both models are fully customizable, but the SM4 has a maximum pressure rating of 250 bar (3,625 psi), while the E1 has a maximum pressure rating of 100 bar (1,450 psi). The actuator is still capable of precise, backlash-controlled rotation, but has a lower load capacity and a smaller footprint, suitable for light to medium duty systems. 

The E1 has a maximum pressure rating of 100 bar (1,450 bar) with standard and custom angle options, meaning virtually any degree of rotation is possible.

E1 actuators offer higher torque for the same pressure ratings when compared to the SM4, but have a lower maximum pressure of 100 bar (1,450 bar). It requires a minimum operating pressure of 5 to 10 bar (72.5 to 145 psi). All standard rotation options are available (including 90º, 180º, 270º, and 360º), but intermediate angles and beyond are available upon request. 

Yes, the E1 offers several standard options and can be adapted for additional features on request. 

Many E1 customization options are available, including different shaft styles, mounting patterns, and options such as cams, locating pins, and inductive control switches for end-position signaling and simple angle monitoring. For more advanced feedback or special seals, materials, or flange designs, please reach out to our engineering team to confirm what is possible for a specific size.

The E1 offers a torque range of 74 to 2,450 Nm (650 to 21,680 in-lb) depending on size of the piston.

This series offers higher torque at lower pressure ratings compared to the SM4. This means that when both the SM4 and the E1 are running at 100 bar (1,450 psi), the E1 is capable of higher maximum torque of a relative size.

Eckart Logo.

Hydraulic Rotary Actuators – E1

The E1 is Eckart’s entry-level hydraulic rotary actuator, designed for low-pressure systems and the successor to the popular SM1 series. It delivers 654 to 21,684 in-lb of torque across six piston sizes at operating pressures up to 100 bar. It functions with the “helical gear principle” and offers standard rotation in 90°, 180°, 270°, or 360° with intermediate angles or rotations beyond 360° available on request.

While the E1 has a lower maximum pressure rating than the flagship SM4, it produces higher torque at the same pressure. Shaft style, mounting pattern, end cushioning, and position feedback are all configurable.

Technical Data

Angle of Rotation

standard 90º/180º/270º/360º and any intermediate angle, even above 360º

Medium

recommended: mineral oil of group HLP/DIN 51524, page 2 and VDMA page 24318; others on request

Min. Operating Pressure Required

72.5 to 145 psi (5 to 10 bar)

Max. Allowable Operating Pressure

1,450 psi (100 bar)
higher on request

Installation Position

as required, provided that adequate air bleeding is provided

Temperature Range

-13ºF to 158ºF (-25ºC to 70ºC)
higher or lower on request

Size
(Piston-Ø, in mm)

40

50

63

80

100

125

Max Torque at 1,450 psi (100 bar) lbf-in | [Nm]

654 [74]

1433 [162]

2690 [304]

5204 [588]

11284 [1275]

21684 [2450]

Spec Torque
lbf-in/psi | [Nm/bar]

0.45 [0.74]

0.98 [1.62]

1.85 [3.04]

3.58 [5.88]

7.78 [12.75]

14.95 [24.50]

Absorption Volume / Displacement
in^3/1º | [cm^3/1º]

0.01 [0.17]

0.023 [0.38]

0.045 [0.7]

0.081 [1.43]

0.181 [2.98]

0.358 [5.86]

Max. Admissible Rotation Time per 90º (without load) [s]

0.13

0.18

0.24

0.26

0.43

0.55

Weight ca.* 90º lbs | [kg]

8.82 [4.0]

14.33 [6.5]

22.05 [10.0]

30.20 [13.7]

52.47 [23.8]

85.98 [39.0]

Weight ca.* 180º lbs | [kg]

10.14 [4.6]

16.53 [7.5]

26.01 [11.8]

36.16 [16.4]

63.93 [29.0]

105.82 [48.0]

Weight ca.*
270º lbs | [kg]

11.46 [5.2]

18.74 [8.5]

25.98 [13.6]

42.11 [19.1]

75.40 [34.2]

125.66 [57.0]

Weight ca.* 360º lbs | [kg]

12.79 [5.8]

20.94 [9.5]

33.95 [15.4]

48.06 [21.8]

86.86 [39.4]

145.41 [66.0]

Max. Radial Load FR
lbf | [KN]

132 [0.589]

418 [1.864]

771 [3.434]

1652 [7.358]

1983 [8.829]

2644 [11.772]

Max. Axial Load FAE
lbf | [KN]

330 [1.472]

550 [2.453]

1101 [4.905]

1983 [8.829]

2644 [11.772]

3966 [17.658]

Max. Axial Load FAA
lbf | [KN]

55 [0.245]

88 [0.392]

132 [0.589]

170 [0.758]

250 [1.117]

330 [1.472]

* Female construction is about 7% lighter

Ordering Code

E1 . 80 – 270º / SZ / Z1 / … / SO

1,450 psi (100 bar) series

Size (Piston-Ø)

Rotation (Standard) – 90º, 180º, 270º, 360º
Other rotations available on request.

Options – Omit for standard

Z1

end cushioning

Z2

±5º adjustable end stop

Z4

long-range adjustable end stop

Z5

cam

Z6

controls witch (ind.)

FL

flange

HW

hollow shaft

SM1

replaceable SM1

SZ

locating pin

ZN

gear hub DIN 5480

ZW

gear shaft DIN 5480



Non-Standard Options – Omit for standard
(Consult factory)

Helical Spline Hydraulic Rotary Actuators:

Our rotary actuators are the helical spline design. This means, a piston and a helix, or sliding spline, work together to convert the linear motion of the piston into rotational motion. Composed of two moving parts and some form of housing, the sliding helical splined gear concept within the actuator is used in many applications where a rotary movement is required. Helical Spline Actuators function when the piston is axially displaced using hydraulic pressure causing simultaneous rotation of the piston. Standard amounts of rotation are 90°, 180°, and 360°; but are available generally up to 720° or more. Additional rotation is created by making the spline gears longer while maintaining the same diameter. The primary benefit to this type of product compared to alternative designs such as linkages using hydraulic cylinders (linear actuators) is its compact design.

Hydraulic Rotary-Linear Actuator Standard Features:

  • Pressure rating at 1,450 psi (100 bar)
  • Standard rotation: 90°/180°/270°/360°
  • 5 models of pistons Ø 40 – 125 mm
  • Adjustable “zero” or home position
  • Wear resistant slide surfaces
  • 2-Point Bearing

Hydraulic Rotary-Linear Actuator Optional Features:

  • End cushioning
  • Rotation adjustable by ±5°
  • Flange mounting
  • Foot mounting
  • Position encoder output
  • Drive shaft configurations, such as spline shaft, tooth hub, hollow shaft, key shaft, etc.
  • Custom configurations available

Eckart is a supplier and rotary actuator manufacturer for various applications including construction, mobile, mechanical, marine, and industrial.

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Home / Products / Rotary Actuators / Hydraulic Rotary Actuators — E3
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E3 Hydraulic Rotary Actuator FAQs

The E3 runs up to 210 bar and covers a wide high torque range.

E3 rotary actuators are rated for 210 bar (3,045 psi) maximum operating pressure and cover a torque range from 400 Nm up to 3,600 Nm (3,540 in-lbs to 31,862 in-lbs) depending on the size of the actuator. Find the exact specifications on our E3 information sheet.

E3 offers 180º and 360º options with a through-hole shaft.

Standard rotation options of the E3 rotary actuator are 180º and 360º. The E3 also has a through-hole shaft as standard so hoses, cables, or safety pins/bolts can pass through. This is especially important for work platforms and similar applications that mount directly onto the actuator. 

E3 rotary actuators feature a flange shaft for easy mounting, offer high torque and high bearing capacity, and utilize a very compact package. 

The E3 is the most compact actuator in our Eckart line. It features the same helical spline design and high torque, but also offers flange shaft, cantilever style mounting, making it well suited for mobile and off-highway machinery.

Learn more about hydraulic components designed for the mobile industry.

The E3 emphasizes low backlash, stable support, and optional counterbalance valves. 

Nearly backlash-free spline threads and the bearing design provide a steady working platform. Combined with a counterbalance valve option that can be mounted directly to the ports for load-holding, clamping, and overpressure protection, this makes the E3 suitable where platform stability and operator safety are critical. 

Eckart Logo.

Hydraulic Flange-Mount Rotary Actuators – E3

The E3 is Eckart’s flange-mounted, compact hydraulic rotary actuator for mobile and off-highway applications. It provides 3,540 to 31,862 in-lb of torque across five piston sizes at operating pressures up to 210 bar, with standard rotation in 180° or 360°. Every E3 comes with a flange shaft and through-hole as standard, allowing hoses, cables, or safety pins to pass through the actuator.

While the E3 is dimensionally interchangeable with competing actuators, three design choices set it apart: virtually backlash-free spline threads, zero play in the four-point roller bearing, and the elimination of compact seals that take stress on both sides. The result is a steady, wobble-free working platform even under lateral load.

Technical Data

Min. Operating Pressure Required

145 to 217 psi (10 to 15 bar)

Max. Allowable Operating Pressure

3,045 psi (210 bar)

Temperature Range

-13ºF to 158ºF (-25ºC to 70ºC)

Size
(Piston-Ø, in mm)

70

95

125

150

170

Max Torque at 3,045 psi (210 bar) lbf-in | [Nm]

3540 [400]

6372 [720]

11063 [1250]

22126 [2500]

31862 [3600]

Spec Torque
lbf-in/psi | [Nm/bar]

1.16 [1.90]

2.09 [3.43]

3.63 [5.95]

7.26 [11.90]

10.46 [17.14]

Angle of Rotation
(+4º tolerance)

180º / 360º

180º / 360º

180º / 360º

180º / 360º

180º / 270º

Absorption Volume / Displacement
in^3/1º | [cm^3/1º]

0.032 [0.518]

0.057 [0.932]

0.120 [1.962]

0.206 [3.371]

0.306 [5.012]

Weight ca. 180º lbs | [kg]

21.2 [9.6]

31.7 [14.4]

59.7 [27.1]

94.1 [42.7]

143.3 [65.0]

Weight ca. 360º lbs | [kg]

27.6 [125]

42.3 [19.2]

81.6 [127.2]

127.2 [57.7]

(270º) 168.9 [76.6 ]

Max. Radial Load FR
lbf | [KN]

1798 [8.00]

4046 [18.00]

8093 [36.00]

9891 [44.00]

13038 [58.00]

Max. Axial Load Fax1
lbf | [KN]

1798 [8.00]

4046 [18.00]

8093 [36.00]

10341 [46.00]

13038 [58.00]

Max. Axial Load Fax2
lbf | [KN]

179.9 [0.80]

427.1 [1.90]

831.8 [3.70]

966.7 [4.30]

1326.4 [5.90]

Max. Moment Capacity M

8850 [1000]

22126 [2500]

50449 [5700]

75231 [8500]

106209 [12000]
Silver painted Eckart E3 hydraulic rotary actuator diagram for size and dimensions.

Size
(Piston-Ø, in mm)

70

95

125

150

170

Outer Diameter (Ø A)

4.13 [105]

5.31 [135]

6.69 [170]

7.76 [197]

9.06 [230]

Shaft Through Hole (Ø E)

0.51 [13]

0.75 [19]

1.38 [35]

1.81 [46]

2.50 [63.5]

Length (K at 180º)

6.63 [168.4]

6.10 [155]

7.44 [189]

8.82 [224]

10.04 [255]

Length (K at 360º)

9.87 [227.8]

8.39 [213]

10.55 [268]

12.44 [316]

(270º) 12.10 [307.4]

Helical Spline Hydraulic Rotary Actuators:

Our rotary actuators are the helical spline design. This means, a piston and a helix, or sliding spline, work together to convert the linear motion of the piston into rotational motion. Composed of two moving parts and some form of housing, the sliding helical splined gear concept within the actuator is used in many applications where a rotary movement is required. Helical Spline Actuators function when the piston is axially displaced using hydraulic pressure causing simultaneous rotation of the piston. Standard amounts of rotation are 90°, 180°, and 360°; but are available generally up to 720° or more. Additional rotation is created by making the spline gears longer while maintaining the same diameter. The primary benefit to this type of product compared to alternative designs such as linkages using hydraulic cylinders (linear actuators) is its compact design.

Hydraulic Rotary Actuator Standard Features:

  • Torque output up to 31,800 in-lb (3,600 Nm)
  • Pressure rating at 3,000 psi (210 bar)
  • Standard rotation: 180°/360°
  • Wear resistant slide surfaces
  • 4-Point Bearing
  • Through-hole (i.e. for cable pass-through)

Hydraulic Rotary Actuator Optional Features:

  • Integrated valve block
  • Custom configurations available

Eckart is a supplier and rotary actuator manufacturer for various applications including construction, mechanical, marine, and industrial.

Related Products

Home / Products / Rotary Actuators / Hydraulic Rotary Actuators — SM4
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SM4 Hydraulic Rotary Actuator FAQs

The SM4 is rated up to 250 bar (3,625 psi), but can operate efficiently from low pressures.

SM4 rotary actuators are designed for a maximum operating pressure of 250 bar, but their low friction seals allow the rotary actuator to operate from as low as 10 bar (145 psi).

Standard angles include 90º, 180º, 270º, and 360º, with low, configurable backlash.

The SM4 rotary actuator can handle all standard rotations, with any intermediate angle (including >360º) available by limiting or increasing stroke length. Backlash is typically around 20 angular minutes. Custom models are available with backlash down to about 5 angular minutes for higher position accuracy.

The SM4 is designed to handle high radial and axial loads due to its four-point bearing. 

The four-point bearing is designed to withstand significant radial and axial loads, making it suitable for applications where the actuator shaft carries the load directly (such as boom pivots or workplatforms). Low axial hydraulic load on the drive shaft (due to a small pressure differential) further protects the bearing and extends service life. 

Use standard HLP mineral oil, typically -25ºC to +70ºC (-13ºF to 158ºF), with good filtration.

  • Hydraulic fluids: SM4 actuators are designed for mineral oil hydraulic fluids of group HLP as per DIN 51524 part 2 (VDMA 24318) with viscosity roughly 16 to 68 cSt in the 40ºC to 60ºC (104ºF to 140ºF) range.
  • Operating temperature: The typical operating temperature is between -25ºC to +70ºC (-13ºF to 158ºF) given that the above fluid specifications are met.
  • Filtration Levels: The system should maintain cleanliness better than ISO 4406 class 19/15, typically via ≤25 µm pressure/return filtration. 

Hydraulic Rotary Actuators – SM4

The SM4 is Eckart’s flagship hydraulic rotary actuator line, and one of the most configurable units in its category.

Torque ranges from 1,593 to 752,316 in-lb across thirteen piston sizes, with operating pressure up to 250 bar or higher on request. Standard rotation is offered in 90°, 180°, 270°, or 360° as standard with intermediate angles and rotations beyond 720° built to order.

Because of its torque, angle of rotation, pressure range, positioning accuracy, stability of position, type of attachment, and its dimensions, the Eckart SM4 rotary actuator can be used in a wide range of applications. Not only is the SM4 a compact and robust unit, but it is also wear-resistant and efficient. The SM4 can be configured with an industry-leading fine and controllable end cushioning curve. Additionally, the SM4 unit can be driven via “black and white” or with proportional, control, and servo valves. For the purpose of subsequent driving, the piston end-positions at the linear cylinder and at the rotary actuator can be scanned via electronic end-position acknowledgement mechanisms. Ultimately, with the SM4, you have a high-performing product that is both robust and compact, allowing for optimal adaptation depending on your specific requirements. If your application calls for lower pressure, the E1 rotary actuator offers the same range of customization. Need more than the E1 or SM4 can offer? Explore our custom rotary actuators.

Hydraulic Rotary Actuator Standard Features:

  • Torque output to 750,000 in-lb (85,000 Nm)
  • Pressure rating at 3,625 psi (250 bar)
  • Standard rotation: 90°/180°/270°/360°
  • Externally adjustable end stop ± 5°
  • Wear resistant moving parts
  • Four-point contact bearing to withstand extreme radial and axial loads
  • Adjustable home position
  • Tight backlash of 20 angular minutes

Hydraulic Rotary Actuator Optional Features:

  • End cushioning including sophisticated damping curves
  • Tighter backlash as low as 5 angular minutes
  • Position indication through encoders or proximity switches
  • Drive shaft configurations, such as spline shaft, tooth hub, hollow shaft, key shaft, etc.

SM4 Configurations

The SM4 rotary actuator can be customized to your exact application with options like single or dual-end drive shafts, rotation past 360°, reversed turning direction, corrosion-resistant materials and protection suitable for sea or saltwater environments.

Refer to the charts below to configure drive shaft, mounting, valve plate, bottom configuration, and accessories.

Custom drive shaft options for Eckart SM4 hydraulic rotary actuators.

Drive Shaft

Reference

Shaft, smooth
Custom drive shaft options for Eckart SM4 hydraulic rotary actuators – smooth configuration.

Shaft, with keys
Custom drive shaft options for Eckart SM4 hydraulic rotary actuators – shaft with keys configuration.

Splined shaft
Custom drive shaft options for Eckart SM4 hydraulic rotary actuators – splined shaft configuration.

Gear shaft
Custom drive shaft options for Eckart SM4 hydraulic rotary actuators – gear configuration.

Shaft with polygon
(conical)
Custom drive shaft options for Eckart SM4 hydraulic rotary actuators – shaft with polygon (conical) configuration.

Hollow shaft
with keyways
Custom drive shaft options for Eckart SM4 hydraulic rotary actuators – hollow shaft with keyways configuration.

Hollow shaft
with gear hub
or with multiple-
splined hub
Custom drive shaft options for Eckart SM4 hydraulic rotary actuators – hollow shaft with gearhub configuration.

Hollow shaft
with square end
Custom drive shaft options for Eckart SM4 hydraulic rotary actuators – hollow shaft with square end configuration.

Flanged shaft
(E3 ONLY)
Custom drive shaft options for Eckart SM4 hydraulic rotary actuators – flanged E3 configuration.
Custom mounting options for Eckart SM4 hydraulic rotary actuators.

Foot Type

Reference

With foot
Custom mounting options for Eckart SM4 hydraulic rotary actuators – foot.

Flange-flattened
Custom mounting options for Eckart SM4 hydraulic rotary actuators – flange flattened.

Flange with
fixing grooves
Custom mounting options for Eckart SM4 hydraulic rotary actuators – flange with fixing grooves.

Flange according
to DIN ISO 5211
Custom mounting options for Eckart SM4 hydraulic rotary actuators – flange DIN-ISO-5211.
Custom valve plate options for Eckart SM4 hydraulic rotary actuators.

Valve Plate Type

Reference

Valve (1) and
valve plate (2)
Custom valve plate options for Eckart SM4 hydraulic rotary actuators – valve and valve plate.

Stop valve plate (1),
cushioning plate –
all other types of
thread possible (2),
standard connection
bores – all other types
of thread possible (3)
Custom valve plate options for Eckart SM4 hydraulic rotary actuators – stop valve plate.
Custom accessory options for Eckart SM4 hydraulic rotary actuators.

Accessory Type

Reference

Proximity switch –
pressure resistant
(to approx. 25º)
Custom accessory options for Eckart SM4 hydraulic rotary actuators – proximity switches

Pressure absorber
Custom accessory options for Eckart SM4 hydraulic rotary actuators – pressure absorbers

Measuring connection
Custom accessory options for Eckart SM4 hydraulic rotary actuators – measuring connection.

Bleed valve with
hose liner
Custom accessory options for Eckart SM4 hydraulic rotary actuators – bleeding valve with hose liner.

Locking screw
Custom accessory options for Eckart SM4 hydraulic rotary actuators – locking screw
Custom bottom options for Eckart SM4 hydraulic rotary actuators.

Bottom Type

Reference

Angle sensor,
potentiometer with coupling and mounting
housing
Custom bottom options for Eckart SM4 hydraulic rotary actuators – angle configuration, potentiometer with coupling and mounting housing.

Locating pin smooth (A)
or locating pin with thread (B), cam (1),
clamping ring with proximity switch (c) or
clamping ring with mechanical switch
Custom bottom options for Eckart SM4 hydraulic rotary actuators – locating pin smooth configuration.

Angular adjustment
(ex. from 90º to 180º)
Custom bottom options for Eckart SM4 hydraulic rotary actuators – angular adjustment.

Agraduated adjustment
(ex. from 0º to 90º)
Custom bottom options for Eckart SM4 hydraulic rotary actuators – agraduated adjustment.

With second flange, on base, with foot on
base
Custom bottom options for Eckart SM4 hydraulic rotary actuators – With second flange, on base, with foot on base configurations.

With large flange
at center
Custom bottom options for Eckart SM4 hydraulic rotary actuators – large flange at center configuration.

With adjusting cylinder
for intermediate angles
of rotation
Custom bottom options for Eckart SM4 hydraulic rotary actuators – adjusting cylinder for intermediate angles of rotation.

With second exit shaft
(also possible with the
types a to j), see SM4
catalog on pg. 4
Custom bottom options for Eckart SM4 hydraulic rotary actuators – exit shaft.

With outside square
end for manual
operation
Custom bottom options for Eckart SM4 hydraulic rotary actuators – outside square end for manual operation.

Technical Data

Angle of Rotation

standard 90º/180º/270º/360º and any intermediate angle, even above 360º

Medium

recommended: mineral oil of group HLP/DIN 51524, page 2 and VDMA page 24318; others on request

Min. Operating Pressure Required

72.5 to 145 psi (5 to 10 bar)

Max. Allowable Operating Pressure

3,625 psi (250 bar) / higher on request

Installation Position

as required, provided that adequate air bleeding is provided

Temperature Range

-13ºF to 158ºF (-25ºC to 70ºC) / higher or lower on request

Size
(piston-Ø)

40

50

63

80

100

125

140

Max Torque
lbf-in | [Nm]

1593
[180]

3319
[375]

6505
[735]

11505
[1300]

23896
[2700]

47792
[5400]

74346
[8400]

Spec Torque
lbf-in/psi | [Nm/bar]

0.44 [0.72]

0.92
[1.50]

1.79
[2.94]

3.17
[5.2]

6.59
[10.8]

13.18
[21.6]

20.48
[33.6]

Absorption Volume in^3/1º| [cm^3/1º]

0.010 [0.170]

0.021
[0.352]

0.041
[0.669]

0.160
[2.624]

0.314
[5.154]

0.477
[7.819]

0.723
[11.846]

Max. Admissible Rotation Time Per 90º (without load) [s]

0.13

0.18

0.24

0.26

0.43

0.55

0.63

Weight ca. 90º
lbs | [kg]

12.13
[5.5]

19.40
[8.8]

25.35
[11.5]

46.30
[21.0]

81
[37]

143
[65]

202
[92]

Weight ca. 180º
lbs | [kg]

13.23
[6.0]

21.16
[9.6]

28.66
[13.0]

50.71
[23.0]

92
[42]

163
[74]

233
[106]

Weight ca. 270º
lbs | [kg]

14.33
[6.5]

22.05
[10.0]

30.86
[14.0]

56.22
[25.5]

103
[47]

185
[84]

264
[120]

Weight ca. 360º
lbs | [kg]

15.43
[7.0]

24.47
[11.1]

34.17
[15.5]

60.62
[27.5]

114
[52]

211
[96]

295
[134]

Max. radial load FR
lbf | [KN]

3250.0
[1.45]

696.9
[3.10]

1079.0
[4.80]

2203.1
[9.80]

3821.7
[17.00]

5745.1
[25.60]

7193.9
[32.00]

Max. radial load FAE
lbf | [KN]

1353.4
[6.02]

2839.5
[12.64]

3299.3
[14.55]

5472.3
[24.35]

8829.9
[39.27]

13785.8
[61.35]

20564.0
[91.50]

Max. radial load FAA
lbf | [KN]

224.8
[1.00]

472.1
[2.10]

854.3
[3.8]

1111.2
[4.95]

1281.4
[5.70]

1550.2
[6.90]

2023.3
[9.00]

Size
(Piston-Ø)

160

180

200

225

250

300

Max Torque
lbf-in | [Nm]

113290
[12800]

173475
[19600]

230120
[26000]

303490
[34300]

424836
[48000]

752316
[85000]

Spec Torque
lbf-in/psi | [Nm/bar]

31.25
[51.2]

47.83
[78.4]

63.59
[104.2]

83.66
[137.2]

117.17
[192.0]

207.48
[340.0]

Absorption Volume in^3/1º| [cm^3/1º]

0.723
[11.846]

1.058
[17.342]

1.466
[24.014]

1.961
[32.162]

2.731
[44.767]

4.821
[79.028]

Max. Admissible Rotation Time Per 90º (without load) [s]

0.73

1.00

1.24

1.50

1.78

2.10

Weight ca. 90º
lbs | [kg]

315
[143]

434
[197]

539
[245]

753
[342]

1190
[540]

2151
[976]

Weight ca. 180º
lbs | [kg]

363
[165]

496
[225]

630
[286]

868
[394]

1399
[635]

2503
[1136]

Weight ca. 270º
lbs | [kg]

412
[187]

588
[267]

720
[327]

983
[446]

1567
[711]

2858
[1296]

Weight ca. 360º
lbs | [kg]

458
[208]

665
[302]

811
[368]

1097
[498]

1757
[797]

3408
[1546]

Max. radial load FR
lbf | [KN]

9350.7
[41.60]

11915.9
[53.00]

14002.7
[62.30]

14634.3
[65.10]

15392.4
[68.50]

19604.6
[87.20]

Max. radial load FAE
lbf | [KN]

28255.1
[125.65]

34914.5
[155.25]

41922.2
[186.50]

42595.6
[189.40]

44539.7
[198.10]

57599.2
[256.25]

Max. radial load FAA
lbf | [KN]

3822.7
[17.00]

4945.8
[22.00]

6069.8
[27.00]

6513.5
[29.00]

7193.9
[32.00]

9216.2
[41.00]

Ordering Code

SM4 . 80 – 270º / SZ / Z1 / … / SO

3,625 psi (250 bar) series

Size (Piston-Ø)

Rotation (Standard) – 90º, 180º, 270º, 360º
Other rotations available on request.

Options – Omit for standard

Z1

end cushioning

Z4

long-range adjustable end stop

Z5

cam

Z6._

controls witch (1-mech. / 2-ind.)

SZ

locating pin

ZW

gear shaft DIN 5480

ZN

gear hub DIN 5480



Non-Standard Options – Omit for standard
(Consult factory)

Helical Spline Hydraulic Rotary Actuators:

Like all Eckart hydraulic rotary actuators, the SM4 is designed with helical spline technology. The actuator operates with a piston and a helical or sliding spline mechanism, which work in tandem to transform the piston’s linear motion into rotational movement.

High torque in a compact profile

  • Helical spline actuators deliver impressive torque within a compact construction, making them ideal for applications where space is limited.

Less risk of contamination and physical damage

  • Protective housing keeps all moving parts safe from debris and moisture, ensuring consistent operation in demanding environments, especially for mining applications.

Low maintenance and wear-resistant moving parts

  • All internal components are fully immersed in oil ensuring preventative wear.
  • Extended-period nitriding ensures a long service life of the rotary actuator.
  • Helical gears feature excellent sliding characteristics.

Reduced pinch points

  • Helical spline rotary actuators offer safer alternatives to linkages for the operator, since there are no exposed parts.

Standard Rotations:

Standard rotations are 90°, 180°, 270°,and 360°. Other rotations can be supplied on request by using the model with the next standard rotation up and limiting the stroke of the piston in accordance. Also available are special models with rotations in excess of 360°. Additional rotation is created by making the spline gears longer while maintaining the same diameter. The primary benefit to this type of product compared to alternative designs such as linkages using hydraulic cylinders (linear actuators) is its compact design.

Eckart is a supplier and rotary actuator manufacturer for various applications including construction, mobile, mechanical, marine, and industrial.

Related Products