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HYDRAULIC ROTARY ACTUATORS – E1

Hydraulic Rotary Actuators – E1

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.

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, mechanical, marine, and industrial.


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