Company Profile

The Precision Alliance

TPA, based in South Carolina, supplies linear and rotary motion components and systems for machine, instrument, device and vehicle applications. Products include linear bearings, ball screws, shaft couplings, linear motors, thin section ball bearings, turntable bearings, specialty gears, and related components.

Company Info

4215 Pleasant Rd.
Fort Mill, SC 29708


  • in Actuators

    The Precision Alliance manufactures miniature linear, the Minibot Linear, and Ultra Mini actuators. They also build specialized/custom systems. The MiniBot-20 is available in any length up to 500 mm, and strokes up to 390 mm (15.4").

  • in Ball & Lead Screws

    The Precision Alliance offers Standard Precision Ball Screws (12 - 80 mm OD), Miniature Rolled Screws, Miniature Precision Ground Screws, and Left / Right Hand Ball Screws.

  • in Ball Screw Actuators

    The Precision Alliance is a manufacturer of a large catalog of components including ball screw actuators. TPA's ball screw actuators are customizable allowing a selection of screws and ball nuts to create an assembly specific for a variety applications.

  • in Crossed Roller Slides

    The Precision Alliance offers crossed roller slides in the following configurations: RTS frictionless low profile, RTNG dust-protected (sealed) precision, RTNA/RTLA frictionless aluminum, and RTN/RTL frictionless precision. Model RTS frictionless low profile slides are low in profile, mount-ready, pre-loaded, and able to carry medium moments/loads in every direction. These slides have dynamic load ratings ranging from 208 to 3672N, lengths ranging from 25 to 205mm, and travel ranges from 12 to 130mm. They are ideal for applications where price and height is limited.

  • in Guides/Rails

    The Precision Alliance manufactures a wide range of linear motion products, including crossed roller bearings/slides, rotary bearings/tables, miniature linear actuators, miniature linear roller guides, etc. MB07W Series miniature linear actuators feature travel ratings ranging from 25 to 300mm, 47 lb normal loading payload capacities, 22.5mm carriage heights, and NEMA11 sized motors.

  • in Linear Actuators

    TPA supplies miniature linear actuators that feature 22.5mm, 30mm, 36.5mm, or 44mm height at the carriage; and travel selectable by the millimeter up to 300mm or 500mm. Depending on model, the linear actuators are available with 1 28mm, 35mm, 42mm, or 57mm-sized motors; and a variety of ballscrew and leadscrew options. Some of the actuators are ideal for use as the base axis of an XY system where loads are cantilevered.

  • in Miniature Actuators

    The Precision Alliance offers MB15W Series, MB07W Series, FAS Series, MB12W Series, and MB09W Series miniature actuators. MB07W Series miniature linear actuators have normal loading payload capacities up to 47 lbs, lead-screw sizes ranging from 1 to 5mm, 22.5mm heights at the carriage, and travel ranges up to 300mm. These actuators feature NEMA11/2-stack stepper motor configurations, optional 1-2 limit sensors, and applications for tight-fitting spaces.

  • in Roller Positioning Tables

    The Precision Alliance offers crossed roller X-Y positioning tables for precision manual movement applications. These tables feature locking capabilities, a low profile monolithic design, and a compact, two axis, crossed roller bearing arrangement.

  • in XY Stages & Tables

    The Precision Alliance supplies linear motor-driven X-Y stages for light load quick movement, modular square X-Y stages, and two axis X-Y tables for precision manual movement. The linear motor driven and modular square stages are constructed of aircraft grade aluminum material, while the two-axis tables have a low profile monolithic design.