Exciting New Addition to Our Product Range!

We are pleased to now offer a range of high quality Stepper Motor Leadscrews from Thomson.

Stepper motor leadscrews from Thomson comprise a hybrid stepper motor and a precision lead screw in one neat compact package. Applications with a lead screw and motor would normally require external bearing support for the lead screw and a drive coupling between the motor and lead screw. Stepper motor leadscrews include integrated bearing support at one end and eliminate the need for a coupling providing a stiffer connection with the load and a more economical, space saving solution.

Thomson Stepper Motor Leadscrews

Sizes and Configurations
Stepper motor leadscrews are available in two basic configurations, rotating screw (S) and rotating nut (N), and a wide range of sizes and options including:

Motor sizes: Nema 11, 14, 17 and 23

Leadscrews: Metric 4mm, 6mm, 8mm and 10mm
Imperial 0.188”, 0.250”, 0.313” and 0.374”
Various pitches, lengths and end details are available

Special versions are available on request.

Rotating Screw Option (S)
Rotating screw assemblies have an external lead nut which attaches to the load. Linear motion is achieved when the motor rotates the leadscrew thus moving the nut and load.

Thomson Stepper MotorThomson’s rotating screw design features a patent-pending Taper-Lock design to connect the lead screw to the motor shaft.
This allows for field serviceability and reduced inventory. It is highly suited for applications requiring high levels of maintenance, which may include frequent disassembly and re assembly or where easy removal of the lead screw is necessary. The Taper-Lock design allows quick de-coupling of the lead screw from the stepper motor. The connection is secure, robust, and self-aligning.

Rotating Nut Option (N)Thomson Stepper Motor
Rotating nut assemblies have an internal lead nut. When rotated the leadscrew moves through the motor body. Linear motion is achieved by attaching the load to the leadscrew.

The rotating nut design features Thomson’s patent-pending integration of the lead nut into the motor rotor to maximise screw diameter therefore increasing load capacity. It is suited for applications where no visible rotation is desired or where it is necessary to translate a load on either side of the motor.

Higher Torque Density
Thomson stepper motor lead screws have a higher torque density than alternative solutions currently on the market. Optimising the motor performance and matching with the ideal lead screw and nut design results in an increase in load capacity of up to 30% within the same motor footprint.

Quiet Operation
Motor configuration and windings can be optimised to limit motor harmonics and reduce motor noise at your application operating parameters.

Example applications for Thomson stepper motor lead screws:

Rotating Screw
Ideal for applications requiring precise linear motion with dedicated external supports such as linear bearings or profile rails such as:

  • Medical devices
  • X-Y stages
  • 3D printers

Rotating Nut
Ideal for applications requiring precise linear motion with integrated anti rotation.
Examples includes:

  • Fluid/syringe pumps
  • HVAC control valves
  • Pipetting devices
  • CNCs

For help in specifying a product for your application call Micromech sales on 01376 333333 or Email sales@micromech.co.uk

Click here to view the Thomson’s stepper motor leadscrew catalogue


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