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Hybrid Stepper Motor Linear Actuator
LM14 NEMA 14 0.75 A 1.8° Non-captive Linear Stepper Motor
NEMA 14 (36 mm) 0.75 A, 1.8° non-captive linear actuator stepper motor delivering a maximum thrust of up to 50 lbs (22 kg)
Specifications
Force -speed performance
Test conditions
100% current with damper simulating load.
Load limits
Non-captive shaft linear actuators limit is 50 lbs / 22 kg. External shaft linear actuators limits are determined by the selected nut.
NOTE: Above performance data for maximum force/load is based on a static load and will vary with a dynamic load
Motor Characteristics
| Spec | Notes | Value |
|---|---|---|
| Non-captive shaft | ||
| General purpose nut | ||
| Maximum thrust | lbs (kg) | 50 (22) |
| Maximum repeatability | in (mm) | 0.005 (0.127) |
| Phase current | amps | 0.75 |
| Number of leads | 4 | |
| Phase resistance | ohms | 6.1 |
| Phase inductance | mH | 8.3 |
| Weight (without screw) | oz (g) | 6.7 (190) |
| Step angle α | ° | 1.8 |
Wiring & Mechanical
Motor wiring/connectivity
Dimensional information
Dimensions are in inches (mm)
Screw specifications
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 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
End treatment options
| End treatments | ||
|---|---|---|
| None | — | |
| 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 leadscrew solution?
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
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