MDrive Linear Actuator

MLI3 NEMA 14 External Linear CANopen IP20

MDrive CANopen NEMA 14 (36 mm) external linear actuator with expanded I/O set.

Our linear motors feature precision rolled lead screws which are designed specifically for motion control applications to deliver maximum life and quiet operation. Corrosion resistant and non-magnetic, screws are manufactured from premium grade stainless steel. Screws may optionally be ordered with Teflon coating.

Mechanical nut options include a general purpose nut, delivering 25 lbs (11 kg) of force for applications not requiring backlash and wear compensation, and an anti-backlash nut, for high accuracy and low drag torque with 5 lbs (2 kg) of thrust.

Control Type CANopen
Feature Set Expanded (Plus2)
P1 Connector Options Power & I/O Wire Crimp
P2 Connector Options Comm DB9
Communications Interface CANopen
Communications Features CANopen DS301, DSP402
NEMA Size NEMA (mm) 14 (36)
Holding Torque
oz-in (N-cm) 18 (13)
Operating Temperature [°C] heatsink 85
[°C] motor 100
IP rating IP20
California Residents – Click here for Proposition 65 warning
Input Voltage VDC 12 ... 48
Power Supply Current Requirement [A] 1.0
Aux-Logic Supply Voltage [+VDC] 12 … 24
Aux-Logic Supply Curret [mA] max 194
Programmable I/O
General Purpose
# of I/O 8 I/O points, programmable as sinking or sourcing inputs or outputs.
Logic Range Inputs and outputs tolerant to +24 VDC, inputs TTL compatible
Output Sink Current Up to 600 mA per channel
Isoation None
Protection Over temp, short circuit, transient over voltage, over voltage, inductive clamp
Dedicated I/O
Function Capture input, trip output , clock/direction I/O
Logic range 0 to +5 VDC, TTL compatible
Analog Input
Resolution [Bits] 10
Range (selectable 0 to +5 VDC, 0 to 10 VDC, 0 to 20 mA, 4 to 20 mA
Type Position and Encoder
Resolution [Bits] 32
Edge Rate [MHz] 5
Range [steps/sec] +/-5,000,000
Resolution [steps/sec] 0.5961
Range [steps/sec2] 1.5 X 109
Resolution [steps/sec2] 90.9
Open Loop
# of step resolutions 20
Range [steps/rev] 200 … 51200
with Encoder option
Encoder type Internal, differential, magnetic
Resolution 512 lines (2048 edges)
Steps/Rev 51200


Force-Speed Performance

Spec Notes Value
Holding torque oz-in 18
N-cm 13
Maximum screw misalignment ° ±1
General purpose nut
Maximum thrust lbs 25
kg 11
Maximum repeatability in 0.005
mm 0.127
Anti-backlash nut
Maximum thrust lbs 25
kg 11
Maximum repeatability in 0.0005
mm 0.0127
Rotor inertia oz-in-sec2 0.0003
kg-cm2 0.021
Weight (motor+driver) oz 8.0
g 230.0

Screw A

Screw B

Screw C


(1) Test conditions: maximum force/load is based on a static load. This will vary with a dynamic load.

(2) Load limits – General purpose nut: 25 lbs (11 kg), Anti-backlash nut: 5 lb (2 kg)

Mechanical dimensions

dimensions in inches (mm)

Screw travel specifications

Travel per revolution
Screw inches mm
Screw A 0.25 6.35
Screw B 0.125 3.175
Screw C 0.063 1.588
Travel per full step
Screw inches mm
Screw A 0.00125 0.0317
Screw B 0.00063 0.0158
Screw C 0.00031 0.0079

Dimensional information

Dimensional information
in / mm
A 3.0 to 18.0 / 77.5 to 455.0
in 0.1 / 0.25 increments
B 0.25 / 6.35
 C 0.25 / 6.35

Nut specifications

General purpose nut

For applications not requiring backlash and wear compensation. Round flange shape.

Max Thrust: 25 lbs (11 kg)

General Purpose Nut

Anti-backlash nut

For applications requiring backlash-free operation for high accuracy and low drag torque. Triangle flange shape.

Factory-preloaded: The anti-backlash nut ships pre-loaded from the factory. Should you need to remove it please read the assembly instructions.

Max Thrust: 5 lbs (2 kg)

End treatment options

End treatments
Smooth Ø 0.1967″ ±0.001
Ø 5 mm ±0.003
Threaded  Metric: M4 x 0.7mm
thread to within 0.03″/
0.76 mm of shoulder
UNC: #8-32 UNC-2A thread
to within 0.03″/
0.76 mm of shoulder

Need a custom screw solution?

Custom screw ends

SEM offers numerous customization options for your lead screw. Contact us to learn more!

Leadscrew maintenance statement

While under optimal conditions lubrication interval is expected to occur approximately once every 1000 hours of service. Actual life will depend on application and environment. Based upon this, frequent inspections must be performed and a maintenance interval determined based on actual conditions.

Recommended lubricant: Dupont Krytox GPL 206