Page 7 - Exlar - EL/ER series Explosion-proof actuators and motors

EL120 Explosion-Proof Actuators

Speed vs. Force Curves

The speed vs. force curves (below) represent approximate and, thus, varying actuator thrust. These values are at
continuous thrust ratings at the indicated linear speed. constant velocity and do not account for motor torque required
Different types of servo amplifiers offer varying motor torque for acceleration.

0.1 In Lead 0.2 In Lead
3,500 5,000
(15569) (XX)
3000
(13345) 4,000
2,500
Force lbf (N) (11120) Force lbf (N) (17793)
2000
3,000
(8896)
(13345)
1500
(6672)
2,000
1000 (8896)
(4448)
500 1 Stack 1,000 3 Stack
(2224) (4448) 2 Stack
0 1 Stack
0 1 2 3 4 5 6 0
(25.4) (50.8) (76.2) (101.6) (127) (152.4) 0 2 4 6 8 10 12
Speed inch/sec (mm/sec) (50.8) (101.6) (152.4) (203.2) (254) (304.8)
Speed inch/sec (mm/sec)
0.75 In Lead
0.5 In Lead 1,400
2,500 (6228)
(11120) 1,200
3 Stack (5338)
2000 2 Stack 1,000
(8896) 1 Stack (4448)
Force lbf (N) (6672) Force lbf (N) (3559)
800
1500
600
(2670)
1000
400
(4448)
(1779)
500 200 3 Stack
(2224) (890) 2 Stack
1 Stack
0
0 0 5 10 15 20 25 30 35 40
0 5 10 15 20 25 30 (127) (254) (381) (508) (635) (762) (889) (1016)
(127) (254) (381) (508) (635) (762)
Speed inch/sec (mm/sec) Speed inch/sec (mm/sec)
Estimated Service Life 6,000 EL120 Lifetime Curve
The L expected life of a roller screw linear actuator is (26689) EL120-xx01 EL120
5,000
10
expressed as the linear travel distance that 90% of properly (22241) EL120-xx02
EL120-xx05
4,000
maintained roller screws are expected to meet or exceed. For (17793) EL120-xx08
higher than 90% reliability, multiply the result by the following (13345)
3,000
factors: 95% x 0.62; 96% x 0.53; 97% x 0.44; 98% x 0.33; 99% Mean Load pounds (N) 2,000
x 0.21. This is not a guarantee; these charts should be used for (8896)
estimation purposes only. (4448)
1,000
The underlying formula that defines this value is: (2224)
500
Travel life in millions of inches, where: 0
10,000
10
100
1,000
C = Dynamic load rating (lbf) 10 ( ) 3 1 (254) (2,540) (25,400) (254,000)
C
(25.4)

a
F = Cubic mean applied load (lbf) L = F a x ℓ Travel Life Millions of inches (mm)
cml

ℓ = Roller screws lead (inches) cml
All curves represent properly lubricated and maintained actuators.
Ratings may vary, depending on the application.
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