HyRAV® – more powerful, compact, safer and tailored perfectly to your demands The hydraulic valve actuators HyRAV of Eckart, form a full series of double-acting actuators or spring return actuators 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
Eckart is a supplier and valve rotary actuator manufacturer for various applications including construction, mechanical, marine, and industrial.
The IC Series can be used as a drop-in replacement to Helac’s rotary actuators. This series offers a cost-effective solution with faster lead times (22-26 weeks) or 10-14 weeks with optional expedited shipping. Some units readily in stock.
The IC20 series rotary actuator has a max drive torque of 4,420 – 37,170 in-lbs at 3,045 psi. Foot mount to single or double flange, cantilever or straddle mount
The E1 rotary actuator is Eckart’s entry-level actuator and is the successor to the popular SM1 series. The E1 works well with low-pressure hydraulic systems with typical pressure ratings of 580 psi (40 bar) – 1,450 psi (100 bar). The E1 rotary actuator functions according to the “helical gear” principle and, due to its compact design, only requires a minimum amount of space while delivering high performance and flexibility.
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:
The IC Series can be used as a drop-in replacement to Helac’s rotary actuators. This series offers a cost-effective solution with faster lead times (22-26 weeks) or 10-14 weeks with optional expedited shipping. Some units readily in stock.
The IC20 series rotary actuator has a max drive torque of 4,420 – 37,170 in-lbs at 3,045 psi. Foot mount to single or double flange, cantilever or straddle mount
The Eckart E3 is a hydraulic rotary actuator that has been especially designed for mobile applications; however, it is not limited to such applications. This rotary actuator functions according to the “helical gear” principle and, due to its compact design, only requires a minimum amount of space.
The Eckart E3 is identical in form to the products of its competitors, but has unique selling points which can offer considerable advantages: firstly, there is virtually no backlash; secondly, there is no play in the 4-point roller bearing; and thirdly, no compact seals which can be subjected to stress on both sides are used. Consequently, there is no more wobbling, such as on the work platform, when a lateral movement is made.
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.
The IC Series can be used as a drop-in replacement to Helac’s rotary actuators. This series offers a cost-effective solution with faster lead times (22-26 weeks) or 10-14 weeks with optional expedited shipping. Some units readily in stock.
The IC20 series rotary actuator has a max drive torque of 4,420 – 37,170 in-lbs at 3,045 psi. Foot mount to single or double flange, cantilever or straddle mount
The Eckart SM4 rotary actuator is a heavy-duty and highly-customizable rotary actuator designed for the toughest and most-demanding applications.
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.
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.
Drive Shaft
Reference
Shaft, smooth
Shaft, with keys
Splined shaft
Gear shaft
Shaft with polygon (conical)
Hollow shaft with keyways
Hollow shaft with gear hub or with multiple- splined hub
Hollow shaft with square end
Flanged shaft (E3 ONLY)
Foot Type
Reference
With foot
Flange-flattened
Flange with fixing grooves
Flange according to DIN ISO 5211
Valve Plate Type
Reference
Valve (1) and valve plate (2)
Stop valve plate (1), cushioning plate – all other types of thread possible (2), standard connection bores – all other types of thread possible (3)
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 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, mechanical, marine, and industrial.
The IC Series can be used as a drop-in replacement to Helac’s rotary actuators. This series offers a cost-effective solution with faster lead times (22-26 weeks) or 10-14 weeks with optional expedited shipping. Some units readily in stock.
The IC20 series rotary actuator has a max drive torque of 4,420 – 37,170 in-lbs at 3,045 psi. Foot mount to single or double flange, cantilever or straddle mount
The Eckart HSE4 rotary-linear actuator is a combination of a rotary actuator and a dual-action linear cylinder, allowing for full flexibility in a minimal amount of space. Consequently, both a rotary movement and a linear movement can be executed even when operated in an extremely small area. Additionally, since the rotary actuator and the linear cylinder are hydraulically-driven separately, any movement sequences can be selected: for example, rotating to the left and right, extending linearly, and retracting.
Furthermore, if both components are driven evenly, then both types of movement will be executed synchronously. The directional valve controls the movement of rod rotation and linear stroking. Because of its torque, angle of rotation, pressure range, positioning accuracy, stability of position, type of attachment, and its dimensions, the Eckart HSE4 rotary actuator can be used in a wide range of applications.
Common applications for the HSE4 include lifting and turning. Not only is the HSE4 a compact and robust unit, but it is also wear-resistant, efficient, and cushioning. Additionally, the HSE4 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 HSE4, you have a high-performing product that is both robust and compact, allowing for optimal adaptation depending on your specific requirements.
Hydraulic Rotary-Linear Actuator Standard Features:
The IC Series can be used as a drop-in replacement to Helac’s rotary actuators. This series offers a cost-effective solution with faster lead times (22-26 weeks) or 10-14 weeks with optional expedited shipping. Some units readily in stock.
The IC20 series rotary actuator has a max drive torque of 4,420 – 37,170 in-lbs at 3,045 psi. Foot mount to single or double flange, cantilever or straddle mount
With over 40 years of experience in the rotary actuator field, Eckart GmbH provides outstanding production quality provided by experienced specialists. Over the decades Eckart GmbH rotary actuator components have gained a firm foothold in automation and drive technology applications.
Through the constant developments made by Eckart GmbH engineers, and the use of high-quality materials, Eckart GmbH rotary actuator components provide durability and dependability. With a Eckart GmbH rotary actuator, you can profit from our experience.
Eckart GmbH is the leader in manufacturing Helical Spline Rotary Actuators. More than 70% of these actuators are custom-designed to meet specific customer needs. Tell us about your project and we will present you with a customized optimum solution.
Customizations Built to Your Requirements
1. Drive shaft and bottom configurations
Select from a diverse range of drive shaft options including smooth, rectangular, geared, and more. Additionally, choose from a large selection of bottom configurations.
2. Mounting options
Mounting options include foot or flange with fixing grooves, flattened surfaces, or configurations per DIN ISO 5211.
3. Operating pressure above 250 bar (3,625 psi)
For high force applications, you can configure an actuator rated for operating pressures above 250 bar (3,625 psi).
4. Change of rotation direction
While anti-clockwise rotation is standard, actuators can be specially configured clockwise.
5. Angle adjustment over the entire rotary range
If you need greater extension past the standard ±5º of adjustment, you can equip the actuator with a long-range end stop.
6. Custom and intermediate angles
Standard rotations include 90º, 180º, 270º, and 360º. Intermediate angles can be achieved by adding a spacer within a standard model’s housing. A 100º actuator, for example, would use a 180º housing. Angles above 360º can also be achieved by making the helical gears longer.
Custom actuator bodies are available for large quantity orders.
7. Position monitoring and feedback
Any position encoders, proximity switch, and sensors for better control, safety, and diagnostics, perfect for automation and testing applications where exact positioning is essential.
8. Additional bearing support
If the actuator is used for supporting loads, additional radial bearing can be added.
9. Direct connection of valves
Valves can be directly mounted to the top of the actuator to provide better control.
10. Modify end cushioning
The cushioning curve is highly customizable to the application and can be fine tined by utilizing up to 10 individual orifices plus throttling valves. (Not available for E3, optional other models).
11. Add second drive pivot
A second drive pivot can be added to the base of the actuator. This is useful in tipping applications where the load needs dual support.
12. Drive shaft and base configurations
Further customizations can include but are not limited to special paints, colors, lake and saltwater resistance, as well as materials options, servo valve mounting plates, port configurations, and various certifications such as ATEX, DNV, ABS, etc.
For the full range of customizations, download the Eckart brochure.
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.
Eckart is a supplier and rotary actuator manufacturer for various applications including construction, mechanical, marine, and industrial.
The IC Series can be used as a drop-in replacement to Helac’s rotary actuators. This series offers a cost-effective solution with faster lead times (22-26 weeks) or 10-14 weeks with optional expedited shipping. Some units readily in stock.
The IC20 series rotary actuator has a max drive torque of 4,420 – 37,170 in-lbs at 3,045 psi. Foot mount to single or double flange, cantilever or straddle mount
The Eckart PSM2 pneumatic rotary actuator is a heavy-duty pneumatic rotary actuator. Additional advantages of the PSM2 include its wear-resistant sliding surfaces and adjustable drive shaft datum. Ultimately, because of its torque, angle of rotation, pressure range, positioning accuracy, stability of position, type of attachment, and dimensions, the Eckart PSM2 rotary actuator is highly adaptable. With the PSM2, you have a high-performance product that is robust but still compact, allowing for adaptations depending on your specific requirements.
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 product compared to alternative designs such as linkages using hydraulic cylinders (linear actuators) is its compact design.
Hydraulic Rotary Actuator Standard Features:
Torque output to 690 in-lb (78 Nm)
Pressure rating at 87 psi (6 bar)
Operating pressure up to 145 psi (10 bar)
Standard Rotation – 90°/ 180° / 360°
Angle adjustment ± 5°
Wear resistant sliding surfaces
Hydraulic Rotary Actuator Optional Features:
Locating pin on the end of the shaft for cams or other control equipment
Proximity switches
Custom configurations available
Eckart is a supplier and rotary actuator manufacturer for various applications including construction, mechanical, marine, and industrial.
The IC Series can be used as a drop-in replacement to Helac’s rotary actuators. This series offers a cost-effective solution with faster lead times (22-26 weeks) or 10-14 weeks with optional expedited shipping. Some units readily in stock.
The IC20 series rotary actuator has a max drive torque of 4,420 – 37,170 in-lbs at 3,045 psi. Foot mount to single or double flange, cantilever or straddle mount
The Eckart PHSE pneumatic rotary-linear actuator is a combination of a rotary actuator and a dual-action linear cylinder. Consequently, with the PHSE, a rotary movement and a linear movement can be executed in an extremely small space, making this compact and robust actuator ideal for many applications. Since the rotary actuator and the linear cylinder are pneumatically-driven separately, any movement sequences can be selected, such as rotating to the left and right, linearly extending and retracting, etc. If both components are driven evenly, then both types of movement will be executed synchronously. 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. Furthermore, this actuator offers great precision for freely selectable motion sequences. Additional advantages of the PHSE include its wear-resistant sliding surfaces and adjustable drive shaft datum. Ultimately, because of its torque, angle of rotation, pressure range, positioning accuracy, stability of position, type of attachment, and dimensions, the Eckart PHSE rotary-linear actuator is highly adaptable. With the PHSE, you have a high-performance product that is robust but still compact, allowing for adaptations depending on your specific requirements.
Hydraulic Rotary-Linear Actuator Standard features:
The IC Series can be used as a drop-in replacement to Helac’s rotary actuators. This series offers a cost-effective solution with faster lead times (22-26 weeks) or 10-14 weeks with optional expedited shipping. Some units readily in stock.
The IC20 series rotary actuator has a max drive torque of 4,420 – 37,170 in-lbs at 3,045 psi. Foot mount to single or double flange, cantilever or straddle mount
