SP35SLA 35 mm Sliding Lead Screw Linear Actuator

Sliding Lead Screw Linear Actuator
35 mm sliding lead screw linear actuator with up to 300 N thrust, 0.6096–25.4 mm lead options, four mechanical configurations, encoder and power-off brake options.
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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

Compact high-force linear motion

High-force linear positioning in a 35 mm actuator frame

SP35SLA is a 35 mm sliding lead screw linear actuator that combines a 35 mm hybrid stepper motor with a precision lead screw for controlled linear motion. Four mechanical configurations, two motor lengths and lead options from 0.6096 to 25.4 mm support automation, instrument and compact machine mechanisms.

35 mm

Compact frame

A square 35 mm mounting envelope with four-lead bipolar windings.

Up to 300 N

Maximum thrust

Single- and double-stack windings support compact mechanisms requiring higher axial force.

4 types

Flexible mechanics

External-drive, through-shaft, C-type and K-type fixed-shaft constructions.

Engineering information

Technical data

35 mmFrame size
Up to 300 NMaximum thrust
0.6096–25.4 mmLead range
33.6 / 45.6Motor length (mm)
Electrical

Motor specifications

Single- and double-stack windings for current and voltage matching.

Configuration Motor length Phase voltage Phase current Phase resistance Phase inductance Weight Leads
Single-stack 33.6 mm 6.6 V 0.5 A 13.2 Ω 14 mH 189 g 4
Single-stack 33.6 mm 3.5 V 1.0 A 3.5 Ω 3.6 mH 189 g 4
Single-stack 33.6 mm 2.7 V 1.5 A 1.8 Ω 1.9 mH 189 g 4
Double-stack 45.6 mm 12 V 0.5 A 24 Ω 29 mH 210 g 4
Double-stack 45.6 mm 6 V 1.0 A 6 Ω 7.2 mH 210 g 4
Double-stack 45.6 mm 4 V 1.5 A 2.7 Ω 3.2 mH 210 g 4

Insulation class B. Maximum temperature rise: 80°C. Operating temperature: −20°C to +55°C.

Lead screw selection

Available screw diameters, leads and travel per step

Travel values are based on 1.8° and 0.9° motor steps.

Screw diameter (inch) Screw diameter (mm) Lead (inch) Lead (mm) Travel / 1.8° step (mm) Travel / 0.9° step (mm)
0.25 6.35 0.024 0.6096 0.003048 0.0015
0.236 / 0.25 / 0.315 6 / 6.35 / 8 0.0394 1 0.005 0.0025
0.25 6.35 0.025 0.635 0.003175 0.0015
0.25 6.35 0.048 1.2192 0.006 0.003
0.25 6.35 0.05 1.27 0.0064 0.0032
0.25 6.35 0.0625 1.5875 0.0079 0.004
0.25 6.35 0.096 2.4384 0.0122 0.0061
0.25 6.35 0.1 2.54 0.0127 0.0064
0.25 6.35 0.125 3.175 0.0159 0.0079
0.25 6.35 0.192 4.8768 0.024 0.0122
0.25 6.35 0.2 5.08 0.0254 0.0127
0.25 6.35 0.25 6.35 0.0318 0.0159
0.25 6.35 0.3333 8.4667 0.0423 0.0212
0.25 6.35 0.384 9.7536 0.0488 0.0244
0.25 6.35 0.5 12.7 0.0635 0.0318
0.25 6.35 1.0 25.4 0.127 0.0635
0.25 6.35 0.0313 0.794 0.00397 0.002
0.315 8 0.1575 4 0.02 0.01
0.315 8 0.315 8 0.04 0.02
0.25 / 0.315 6.35 / 8 0.0787 2 0.01 0.005
0.236 / 0.315 6 / 8 0.1969 5 0.025 0.0125
0.315 8 0.3937 10 0.05 0.025

Lead-screw diameter, length and end machining can be reviewed for the mechanism. A 9.525 mm screw option can be reviewed for selected external-drive builds.

Optional feedback

Encoder resolution range

Select the feedback package according to control architecture and available installation space.

Feedback format Resolution range Selection note
Compact magnetic feedback 100–1000 pulses/rev Multiple intermediate resolutions available
Slim magnetic feedback 50–5000 pulses/rev Multiple intermediate resolutions available
Closed-loop feedback 1000 or 2000 pulses/rev For closed-loop positioning review
Optional holding brake

Power-off brake specifications

Electromagnetic holding brake for controlled power-off retention.

Parameter Specification
Rated voltage 24 VDC ±5%
Power 4 W
Static torque >0.3 N·m
Insulation 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
Rotation clearance 1°
Emergency braking 200 cycles
Mechanical life 500,000 cycles
Noise <60 dB(A)
Speed conversion

Lead-specific linear speed reference

Calculated linear speed in mm/s from motor speed and screw lead.

Lead (mm) 30 r/min 60 r/min 90 r/min 120 r/min 180 r/min 240 r/min 300 r/min 360 r/min 480 r/min 600 r/min 720 r/min 900 r/min 1080 r/min 1200 r/min 1500 r/min
0.6096 0.3 0.61 0.91 1.22 1.83 2.44 3.05 3.66 4.88 6.1 7.32 9.14 10.97 12.19 15.24
1 0.5 1 1.5 2 3 4 5 6 8 10 12 15 18 20 25
0.635 0.32 0.64 0.95 1.27 1.91 2.54 3.18 3.81 5.08 6.35 7.62 9.53 11.43 12.7 15.88
1.2192 0.61 1.22 1.83 2.44 3.66 4.88 6.1 7.32 9.75 12.19 14.63 18.29 21.95 24.38 30.48
1.27 0.64 1.27 1.91 2.54 3.81 5.08 6.35 7.62 10.16 12.7 15.24 19.05 22.86 25.4 31.75
1.5875 0.79 1.59 2.38 3.18 4.76 6.35 7.94 9.53 12.7 15.88 19.05 23.81 28.58 31.75 39.69
2.4384 1.22 2.44 3.66 4.88 7.32 9.75 12.19 14.63 19.51 24.38 29.26 36.58 43.89 48.77 60.96
2.54 1.27 2.54 3.81 5.08 7.62 10.16 12.7 15.24 20.32 25.4 30.48 38.1 45.72 50.8 63.5
3.175 1.59 3.18 4.76 6.35 9.53 12.7 15.88 19.05 25.4 31.75 38.1 47.63 57.15 63.5 79.38
4.8768 2.44 4.88 7.32 9.75 14.63 19.51 24.38 29.26 39.01 48.77 58.52 73.15 87.78 97.54 121.92
5.08 2.54 5.08 7.62 10.16 15.24 20.32 25.4 30.48 40.64 50.8 60.96 76.2 91.44 101.6 127
6.35 3.18 6.35 9.53 12.7 19.05 25.4 31.75 38.1 50.8 63.5 76.2 95.25 114.3 127 158.75
8.4667 4.23 8.47 12.7 16.93 25.4 33.87 42.33 50.8 67.73 84.67 101.6 127 152.4 169.33 211.67
9.7536 4.88 9.75 14.63 19.51 29.26 39.01 48.77 58.52 78.03 97.54 117.04 146.3 175.56 195.07 243.84
12.7 6.35 12.7 19.05 25.4 38.1 50.8 63.5 76.2 101.6 127 152.4 190.5 228.6 254 317.5
25.4 12.7 25.4 38.1 50.8 76.2 101.6 127 152.4 203.2 254 304.8 381 457.2 508 635
0.794 0.4 0.79 1.19 1.59 2.38 3.18 3.97 4.76 6.35 7.94 9.53 11.91 14.29 15.88 19.85
4 2 4 6 8 12 16 20 24 32 40 48 60 72 80 100
8 4 8 12 16 24 32 40 48 64 80 96 120 144 160 200
2 1 2 3 4 6 8 10 12 16 20 24 30 36 40 50
5 2.5 5 7.5 10 15 20 25 30 40 50 60 75 90 100 125
10 5 10 15 20 30 40 50 60 80 100 120 150 180 200 250
Technical drawings

Mechanical dimensions and performance curves

SP35SLA external drive dimensions
External-drive configuration and nut interface.
SP35SLA through shaft dimensions
Through-shaft configuration.
SP35SLA C-type fixed shaft dimensions
C-type fixed-shaft configuration.
SP35SLA K-type fixed shaft dimensions
K-type fixed-shaft configuration.
SP35SLA single-stack thrust-speed curves
Single-stack reference curves at 24 VDC and 1.5 A RMS; recommended load limit 23.5 kg.
SP35SLA double-stack thrust-speed curves
Double-stack reference curves at 24 VDC and 1.5 A RMS; recommended load limit 23.5 kg.
SP35SLA power-off brake dimensions
Optional power-off brake dimensions; electrical and performance data are listed in the HTML table above.
Mechanical integration

Four formats for different motion architectures

Select the construction according to how the lead screw, nut and moving element are arranged.

  • External drive for a travelling external nut
  • Through shaft for screw access on both sides
  • C-type fixed shaft for integrated guided travel
  • K-type fixed shaft for compact guided actuation
SP35SLA 35 mm sliding lead screw linear actuator configurations
Application fields

Designed for compact high-force mechanisms

Laboratory automation

Sample handling, dispensing and precision positioning.

Medical instruments

Motion for diagnostic and analytical equipment, subject to system validation.

Industrial inspection

Controlled positioning of sensors, probes and optical assemblies.

Valves and compact machinery

Actuation for valves, dosing systems, feeders and compact automation modules.

Selection information

Define the actuator around the load

Use travel, lead, speed, axial load, motor length, end machining, feedback and brake requirements to select the configuration.

Motor frame35 mm
Motor lengths33.6 / 45.6 mm
Phase current0.5–1.5 A RMS
Lead options0.6096–25.4 mm
Maximum thrustUp to 300 N

Configure the SP35SLA for your mechanism.

Send stroke, lead, speed, axial load, end machining, feedback and brake requirements for review.

Request consultation  →

Explore related linear motion solutions

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Perfection in a new dimension

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SP35SLA 35 mm Sliding Lead Screw Linear Actuator
35 mm sliding lead screw linear actuator with up to 300 N thrust, 0.6096–25.4 mm lead options, four mechanical configurations, encoder and power-off brake options.

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