Linear actuators are a device that creates motion in a straight line, as opposed to the rotational motion of a motor. It consists of a motor, a lead screw, and a moving rod or shaft. The rotation of the motor turns the lead screw, this screw is threaded in a way that converts the rotational motion of the motor into linear motion, causing the rod or shaft to extend or retract. Linear actuators are commonly used in applications that require precise and controlled straight-line movement, such as climbing tasks, driving arms, actuating intakes, and deploying other diverse mechanisms. Their design allows for efficient, reliable, and smooth operation in various mechanical systems.
Looking to assemble a Linear Actuator - 12in Stroke? Check out our Linear Actuator Assembly guide!
The below tables provide the mathematical performance possibilities, and assume 1:1 gearing and 100% vertical load. Cantilever load and gear reductions will change these numbers. We recommend using a lead screw calculator such as the AMB Robotics Calculator for Lead Screws to find the numbers for your application.
Special thanks to Ari Meles-Braverman for creating and maintaining the AMB Robotics Calculator!
| Link to pre-filled AMB Linear Actuator Calculator |
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Parameter
Value
Units
Outer Body Width Size
2x2
Inches
Inner Body Width Size
1x1
Inches
Minimum Retracted Length
16
Inches
Minimum Extended Length †
28
Inches
Body Material
Aluminum
-
Screw Material
Steel
-
Nut Material
Brass
-
†
Minimum Retracted Length + Stroke Length
Parameter
Value
Units
Stroke Length
12
Inches
Diameter
10
mm
Pitch
2
mm
Starts
6
-
Lead Angle
22.26
Degrees
Pitch Diameter
9.33
mm
Forward Efficiency
65
Percentage
Buckling Critical Load †
1000
lbs
Thread Type
Metric Rounded ACME
-
†
Do NOT exceed a 1000lbs of compressive load on the leadscrew.
Duty Cycle Percentage
Input RPM
Applied Torque (N*m)
Maximum Output Load (N)
Maximum Linear Speed (m/s)
20
1357
2.88
1508
0.27
40
2714
2.16
1131
0.54
60
4070
1.44
754
0.81
80
5427
0.72
377
1.08
100
6784
0
0
1.35
Duty Cycle Percentage
Input RPM
Applied Torque (N*m)
Maximum Output Load (N)
Maximum Linear Speed (m/s)
20
1164
2.40
1257
0.23
40
2328
1.80
942
0.47
60
3492
1.20
628
0.70
80
4656
0.60
314
0.93
100
5820
0
0
1.16