LM23 NEMA 23 3.0 A 1.8° Non-captive Linear Stepper Motor

Hybrid Stepper Motor

LM23 NEMA 23 3.0 A 1.8° Non-captive Linear Stepper Motor

NEMA 23 Linear Actuator

NEMA 23 (57 mm) 3.0 A, 1.8° non-captive linear actuator stepper motor delivering a maximum thrust of up to 200 lbs (91 kg).

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.

Motor Performance

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Spec Notes Single length
Non-captive shaft
General purpose nut
Maximum thrust lbs (kg) 200 (91)
Maximum repeatability in (mm) 0.005 (0.127)
Phase current amps 3.0
Number of leads 4
Phase resistance ohms 0.65
Phase inductance mH 1.5
Weight (without screw) oz (g) 18 (510)
Step angle α ° 1.8

Mechanical dimensions

dimensions in inches (mm)
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Wire Color Phase
Red Phase A
Red/White Phase A Return
Green Phase B
Green/White Phase B Return

Screw travel specifications

Travel per revolution
Screw inches mm
Screw G 0.375 9.525
Screw A 0.20 5.08
Screw B 0.167 4.233
Screw D 0.0833 2.116
Travel per full step
Screw inches mm
Screw G 0.001875 0.0476
Screw A 0.001 0.0254
Screw B 0.000835 0.0212
Screw D 0.0004165 0.0106

Dimensional information

Dimensional information
in / mm
A 3.0 to 24.0 / 77.5 to 610.0
in 0.1 / 0.25 increments
B 0.50 / 12.7
C 0.375 / 9.525

Nut specifications

The nut is located internal to the motor.

Max Thrust: 200 lbs (91kg)

End treatment options

End treatments
Smooth Ø 0.2362″ ±0.001
Ø 6mm ±0.003
Threaded  Metric: M6 x 1.0mm
thread to within 0.03″/
0.76 mm of shoulder
UNC: 1/4-20 UNC-2A
thread to within 0.05″/
1.3 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