MLI1 NEMA 17 Non-captive Linear Programmable Motion Control IP20

MDrive Linear Actuator

MLI1 NEMA 17 Non-captive Linear Programmable Motion Control IP20

MDrive Programmable Motion Control NEMA 17 (42 mm) non-captive linear actuator with standard 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.

Non-captive shaft motor delivers up to 50 lbs (22 kg) of thrust for demanding applications.

Control Type Programmable Motion Control
Feature Set Standard (Plus)
P1 Connector Options Power & I/O Flying Leads, Pluggable
P2 Connector Options Comm IDC, Wire Crimp
Communications Interface RS-422/485
Communications Features MCode OS, 4.8 … 115.2 kbps baud rate
NEMA Size NEMA (mm) 17 (42)
Holding Torque
oz-in (N-cm) 29 (20)
Operating Temperature [°C] heatsink 85
[°C] motor 100
IP rating IP20
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Input Voltage VDC 12 ... 48
Power Supply Current Requirement [A] 2.0
Aux-Logic Supply Voltage [+VDC] 12 … 24
Aux-Logic Supply Curret [mA] max 194
Programmable I/O
General Purpose
# of I/O 4 I/O points, programmable as sinking outputs or sinking and sourcing inputs
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
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 29
N-cm 20
Maximum screw misalignment ° ±1
Maximum thrust lbs 50
kg 22
Maximum repeatability in 0.005
mm 0.127
Rotor inertia oz-in-sec2 0.0005
kg-cm2 0.034
Weight (motor+driver) oz 9.6
g 272.2

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)50 lbs (22 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

The nut is located internal to the motor.

Max Thrust: 50 lbs (22kg)

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

Part Number:

Select from the available options to build a part number.

Screw Selection

Connectivity Accessories

Accessory Function Part Number
Communications Converter
Prototype Develoment Cable(s)
Connector Kit(s)
(only needed if building your own cables)