Compact mechanical package
A 14 mm frame and 32 mm motor length support compact instruments, optical mechanisms and miniature automation axes.
SP14SLA 14 mm Sliding Lead Screw Linear Actuator
Sliding Lead Screw Linear Actuator
Compact 14 mm sliding lead screw linear actuator with up to 19 N thrust, 0.3–8 mm lead options, external-drive, through-shaft and K-type fixed-shaft configurations, and optional EK7 encoder.
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 precision linear motion
Accurate linear positioning in a 14 mm actuator frame
SP14SLA combines a compact hybrid stepper motor with a sliding lead screw for precise motion where installation space is limited.
Flexible screw selection
Lead options from 0.3 to 8 mm allow designers to balance linear resolution, speed and thrust for the target mechanism.
Multiple configurations
External-drive, through-shaft and K-type fixed-shaft formats support different assembly and travel requirements.
Engineering information
Technical data
14 mmFrame size
Up to 19 NMaximum thrust
0.3–8 mmLead range
3 configurationsMechanical formats
Electrical
Motor specifications
Core motor data for electrical and thermal evaluation.
| Model | Phase voltage | Phase current | Phase resistance | Phase inductance | Weight | Leads | Motor length |
|---|---|---|---|---|---|---|---|
| SP14SLA | 6.6 V | 0.25 A RMS | 22 Ω | 4.5 mH | 60 g | 4 | 32 mm |
Insulation class B. Maximum temperature rise: 80°C. Recommended operating temperature: −20°C to +55°C.
Lead screw selection
Available leads and travel per step
Travel values are based on a 1.8° motor step.
| Screw diameter (inch) | Screw diameter (mm) | Lead (inch) | Lead (mm) | Lead code | Travel per 1.8° step |
|---|---|---|---|---|---|
| 0.098 / 0.138 | 2.5 / 3.5 | 0.0394 | 1 | AB | 0.005 mm |
| 0.098 / 0.118 | 2.5 / 3 | 0.0197 | 0.5 | AD | 0.0025 mm |
| 0.138 | 3.5 | 0.0118 | 0.3 | AF | 0.0015 mm |
| 0.138 | 3.5 | 0.024 | 0.6096 | AA | 0.003048 mm |
| 0.138 | 3.5 | 0.048 | 1.2192 | B | 0.006096 mm |
| 0.138 | 3.5 | 0.0787 | 2 | G | 0.01 mm |
| 0.138 | 3.5 | 0.096 | 2.4384 | J | 0.0122 mm |
| 0.138 | 3.5 | 0.1575 | 4 | M | 0.02 mm |
| 0.138 | 3.5 | 0.315 | 8 | T | 0.04 mm |
Confirm screw diameter, lead, usable stroke and end machining during technical review.
Fixed-shaft configuration
K-type stroke options
| Dimension A | Stroke B | Dimension C |
|---|---|---|
| 6 mm | 5 mm | 0 mm |
| 11 mm | 10 mm | 0 mm |
| 16 mm | 15 mm | 2 mm |
| 21 mm | 20 mm | 7 mm |
Feedback option
EK7 encoder
| Encoder | Housing | Depth | Mounting holes | Centre | Resolution options |
|---|---|---|---|---|---|
| EK7 incremental | 14 mm square | 14.5 mm | 2 × Ø1.8 | Ø8 | 1000 or 2000 pulses/rev |
Technical drawings
Mechanical dimensions and performance curves
Clear English drawings for configuration review. All dimensions are in millimetres unless otherwise stated.
Mechanical integration
Three formats for different linear-motion layouts
Choose the actuator construction according to how the screw, nut and moving element are arranged in the customer mechanism.
- External drive for a travelling external nut
- Through shaft for screw access on both sides
- K-type fixed shaft for controlled linear travel
Application fields
Designed for compact precision mechanisms
The 14 mm actuator format is suited to equipment that requires controlled linear motion in a limited installation envelope.
Laboratory automation
Compact sample handling, dispensing, scanning and positioning mechanisms.
Medical instruments
Miniature linear motion for diagnostic and analytical equipment, subject to system-level validation.
Optical positioning
Adjustment of lenses, sensors, apertures and compact optical components.
Valves and pumps
Controlled displacement for miniature valves, dosing pumps and flow-control assemblies.
Selection information
Define the actuator around the mechanism
Use the required travel, screw lead, target speed and axial load to select the mechanical configuration before final end machining.
Motor frame14 mm
Motor rating6.6 V / 0.25 A RMS
Lead options0.3–8 mm
Maximum thrustUp to 19 N
Feedback optionEK7 incremental encoder
Configure the SP14SLA for your mechanism.
Send the required stroke, screw lead, target speed, axial load, end machining and feedback requirement for engineering review.
Contact us
Would you like to learn more about our solutions?
We would be happy to advise you—personally, competently, and tailored to your requirements.
Perfection in a new dimension
Further Information
Short delivery times available for selected product configurations.
The TP+ HIGH TORQUE enables maximum torque density and maximum torsional rigidity—ideal for demanding applications with dynamic load changes and high positioning accuracy.
alpha Advanced Line gearboxes with increased durability and food-grade lubrication available.
The TP+ for coordinated pinion-rack systems for medium to high requirements. Typical areas of application in wood, plastic, and composite processing, in machining centers, or in automation.
With cynapse® and smart services, you can unleash the full potential of your drive system: sensor data is processed, visualized, and analyzed intelligently. Find out how the combination of gearboxes with cynapse® and our Smart Services can make your digital production faster, safer, and more efficient.
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