Product Selection Overview
The successful integration of a stepper motor linear actuator in an application is primarily dependent on the screw alignment and subsequent screw runout. If incorrectly mounted, a lead screw assembly will have significantly reduced system life and may be noisy or inaccurate. Thomson methodically straightens all screws prior to assembly to minimize vibration and runout. The Taper-Lock coupling method also was designed to provide a concentric interface and optimize alignment. Proper alignment, end support configuration and lead nut selection are important factors to achieve a well designed installation that will exceed expectations.
Selection Step-by-Step
1. Select Stepper Motor Linear Actuator Configuration Click to Open
Determine which of the configurations – rotating screw (MLS), rotating nut (MLN) or actuator (MLA) – the application requires. Click here for application examples.
2. Select Motor Size Click to Open
Select the appropriate size based on desired performance, motor frame size, etc. Thomson offers five base models (MLx08, MLx11, MLx14, MLx17 and MLx23) with optional motor windings, linear travel and load capacity selection.
3. Select Lead Screw Configuration and End Machining or End Mounting Click to Open
For MLS or MLN, select the lead screw diameter and length with regard to the required stroke of the application and the type of end machining the screw requires. For MLA, select desired lead or travel per step, stroke length and end mounting.
4. Select Nut Click to Open
For rotating screw (MLS) configurations, choose between various nut mounting styles, materials, and backlash options. Rotating nut (MLN) configurations as default always come in a high performance material, standard backlash nut. As a default, all MLA configurations come with a standard backlash and performance material nut.
5. Mount the Stepper Motor Linear Actuator Click to Open
Mount the unit into your assembly. For MLA, use the end mounting installation guidelines shown on page 45 of Thomson's Stepper Motor Linear Actuator brochure.
