SP42SLA 42 mm Sliding Lead Screw Linear Actuator

Sliding Lead Screw Linear Actuator
A configurable 42 mm sliding lead screw linear actuator delivering up to 600 N thrust with multiple lead, encoder, brake and mechanical configuration options.
SP42SLA 42 mm sliding lead screw linear actuator configurations

Technical details

Further information

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Positioning accuracy

High torsional rigidity and constant torsional backlash over the entire gearbox service life ensure consistently high performance

Compactness

High torque density thanks to high performance and short design

Low maintenance

Highest quality standards for a long service life and extended maintenance intervals

Technical data

42 mm linear motion platform

High-thrust linear positioning in a configurable 42 mm frame

The SP42SLA 42 mm sliding lead screw linear actuator converts stepper-motor rotation into controlled linear travel for industrial mechanisms that require compact packaging, repeatable positioning and flexible mechanical integration. Select the motor winding, screw lead and output configuration to match the required thrust, speed and installation envelope.

Up to 600 N

High linear thrust

A robust 42 mm motor platform supports demanding push-pull positioning tasks when paired with the correct lead and drive profile.

22 lead codes

Wide lead selection

Available lead values span 0.6096 to 25.4 mm, allowing engineering trade-offs between travel per step, speed and axial force.

4 configurations

Flexible integration

External-drive, through-shaft, C-type fixed-shaft and K-type fixed-shaft layouts cover a broad range of guided linear mechanisms.

Technical data

Specification data for engineering selection

42 mmFrame size
Up to 600 NMaximum thrust
0.6096–25.4 mmLead range
−20 to +55 °CAmbient range

Electrical platform

Motor electrical specifications

Winding Phase voltage Phase current (RMS) Phase resistance Phase inductance Weight Leads Motor length
17-2105 7.2 V 0.5 A 14.4 Ω 19.8 mH 254 g 4 34.1 mm
17-2110 3.8 V 1.0 A 3.8 Ω 5 mH 254 g 4 34.1 mm
17-2115 2.85 V 1.5 A 1.9 Ω 2.2 mH 254 g 4 34.1 mm
17-2205 11 V 0.5 A 22 Ω 46 mH 386 g 4 48.1 mm
17-2212 4.5 V 1.2 A 3.8 Ω 8 mH 386 g 4 48.1 mm
17-2225 2.5 V 2.5 A 1 Ω 1.8 mH 386 g 4 48.1 mm

Class B insulation. Rated temperature rise: 80 °C. Recommended ambient operating range: −20 to +55 °C.

Linear travel selection

Available screw leads and travel per step

Screw Ø (in) Screw Ø (mm) Lead (in) Lead (mm) Lead code Travel at 1.8° (mm) Travel at 0.9° (mm)
0.25 6.35 0.024 0.6096 AA 0.003048 0.0015
0.236 / 0.25 / 0.315 6 / 6.35 / 8 0.0394 1 AB 0.005 0.0025
0.25 6.35 0.025 0.635 A 0.003175 0.0015
0.25 6.35 0.048 1.2192 B 0.006 0.003
0.25 6.35 0.05 1.27 D 0.0064 0.0032
0.25 6.35 0.0625 1.5875 F 0.0079 0.004
0.25 6.35 0.096 2.4384 J 0.0122 0.0061
0.25 6.35 0.1 2.54 K* 0.0127 0.0064
0.25 6.35 0.125 3.175 L* 0.0159 0.0079
0.25 6.35 0.192 4.8768 Q 0.024 0.0122
0.25 6.35 0.2 5.08 R* 0.0254 0.0127
0.25 6.35 0.25 6.35 S* 0.0318 0.0159
0.25 6.35 0.3333 8.4667 U 0.0423 0.0212
0.25 6.35 0.384 9.7536 W* 0.0488 0.0244
0.25 6.35 0.5 12.7 Y* 0.0635 0.0318
0.25 6.35 1.0 25.4 Z* 0.127 0.0635
0.25 6.35 0.0313 0.794 N 0.00397 0.002
0.315 8 0.1575 4 M 0.02 0.01
0.315 8 0.315 8 T 0.04 0.02
0.25 / 0.315 6.35 / 8 0.0787 2 G 0.01 0.005
0.236 / 0.315 6 / 8 0.1969 5 E 0.025 0.0125
0.315 8 0.3937 10 C 0.05 0.025

Values marked with an asterisk are rounded. Winding and screw length can be configured to order. External-drive assemblies can also be evaluated with a 9.525 mm screw.

Mechanical platform

Configuration summary

Configuration Motor stack Screw diameter Integration note
External drive 34.1 or 48.1 mm motor stack 6, 6.35 or 8 mm; optional 9.525 mm Lead screw translates while the nut is supported by the application
Through shaft 34.1 or 48.1 mm motor stack 6, 6.35 or 8 mm Compact translating-screw arrangement through the motor axis
C-type fixed shaft 34.1 or 48.1 mm motor stack Configuration-dependent Integrated fixed-shaft output for guided linear mechanisms
K-type fixed shaft 34.1 or 48.1 mm motor stack Configuration-dependent Fixed-shaft assembly for supported loads and custom couplings

Dimensions A, B, C and L are configuration-dependent. Confirm the selected lead, stroke, end machining and load guidance before release.

Feedback options

Optional encoder selection

Encoder Output Available resolution Mechanical format
EK1 Single-ended / differential 100, 108, 120, 125, 128, 200, 250, 256, 300, 360, 400, 500, 512, 720, 800 or 1000 CPR Compact round encoder
EK2 Single-ended / differential 50, 100, 192, 200, 250, 256, 360, 400, 500, 720, 900, 1000, 1250, 2000, 2500, 4000 or 5000 CPR Extended housing encoder
EK7 Single-ended / differential 1000 or 2000 CPR Low-profile square encoder option

Encoder availability and mounting dimensions depend on the selected motor stack and rear accessory package.

Holding option

Optional power-off brake

Parameter Value
Series 42 mm
Rated voltage 24 VDC ±5%
Resistance 145 Ω ±10%
Power 5 W
Static torque > 0.8 N·m
Insulation class Class B
Insulation resistance > 100 MΩ at 500 VDC
Dielectric strength 1000 VAC for 1 s
Pull-in time 50 ms
Release time 50 ms
Rotational clearance 1°
Emergency braking 200 cycles
Mechanical life 500,000 cycles
Noise < 60 dB(A)

The brake is intended to hold a stationary axis after power removal. Emergency-braking limits and thermal duty must be reviewed for the application.

Mechanical drawings

Configuration dimensions

SP42SLA 42 mm external-drive sliding lead screw linear actuator dimensions
External-drive configuration dimensions
SP42SLA 42 mm through-shaft sliding lead screw linear actuator dimensions
Through-shaft configuration dimensions
SP42SLA 42 mm C-type fixed-shaft linear actuator dimensions
C-type fixed-shaft configuration dimensions
SP42SLA 42 mm K-type fixed-shaft linear actuator dimensions
K-type fixed-shaft configuration dimensions
SP42SLA optional 42 mm power-off brake dimensions
Optional power-off brake dimensions

Performance reference

Thrust-speed curves

SP42SLA single-stack thrust-speed performance curves
Single-stack motor reference curves at 24 VDC
SP42SLA double-stack thrust-speed performance curves
Double-stack motor reference curves at 24 VDC

Application-ready integration

Select the complete motion assembly, not only the motor

Lead choice sets the basic balance between speed, resolution and force. Reliable machine performance also depends on drive current, acceleration, external guidance, screw support, lubrication strategy and operating duty.

  • External-drive, through-shaft and fixed-shaft layouts
  • Custom screw length and end machining
  • Optional encoder, power-off brake and anti-backlash nut
  • PTFE-coated screw option for low-lubrication applications
SP42SLA 42 mm sliding lead screw linear actuator configurations

Typical applications

Built for repeatable industrial linear motion

SP42SLA is suited to guided axes where compact geometry, configurable travel and controllable thrust are more important than a fully enclosed actuator package.

Semiconductor and electronics

Wafer-handling modules, inspection fixtures, test equipment and precision component positioning.

Laboratory and medical equipment

Sample-handling mechanisms, optical adjustment, fluid-control positioning and automated analysis systems.

Industrial automation

Dispensing, labeling, packaging, pick-and-place tooling, valve adjustment and compact transfer mechanisms.

Optics and instrumentation

Focus adjustment, sensor positioning, calibration fixtures and compact scientific motion modules.

Selection guidance

Engineering information required for configuration

For a reliable recommendation, provide the required stroke, thrust, target speed, duty cycle, installation orientation, available supply voltage, positioning resolution and environmental conditions.

Frame42 mm
Motor stack34.1 or 48.1 mm
Screw diameter6 / 6.35 / 8 mm
Lead range0.6096–25.4 mm
OptionsEncoder / brake / custom machining

Configure SP42SLA

Discuss your linear-motion requirement

Send the stroke, load, speed, duty cycle and installation constraints. Spotlight Motor can help match the winding, lead, mechanical layout and feedback package.

Request engineering support

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SP42SLA 42 mm Sliding Lead Screw Linear Actuator
A configurable 42 mm sliding lead screw linear actuator delivering up to 600 N thrust with multiple lead, encoder, brake and mechanical configuration options.

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