Mini-Rail Miniature Linear Slide Guide | Self-Lubricating

Uses Gliding Surface Technology (GST)

Miniature Linear Rail with Slide Carriage features a compact two-piece design for quick installation in linear motion applications. The self-lubricating FrelonGOLD® PTFE undercarriage liner ensures oil-free, maintenance-free operation throughout the system’s lifespan, with no rolling elements to prevent catastrophic failure. Designed as a cost-effective, fully interchangeable alternative to standard miniature linear slides and profile rails, it is available in widths from 7 mm to 26 mm and lengths up to 3,600 mm, with custom options. Operating on its own miniature linear rail without requiring a shaft, it supports high loads and performs reliably in environments with contaminants or extreme temperatures.

Learn more about the benefits of the proprietary, self-lubricating Frelon® liner from PBC Linear

Mini-Rail Miniature Linear Slide Performance Benefits

  • High Load Capacity: Supports static loads up to 1,350 lbs
  • Reliable and Resilient Design: No rolling elements, prevents catastrophic failure, and excels in extreme conditions including wide temperature ranges, heavy particulates, wash-down environments, and extreme vibrations
  • Multiple Sizes Available: Offered in five sizes, and available in lengths up to 3,600 mm
  • Easy Installation: Lightweight, two-piece assembly ready for immediate use with no alignment necessary. Equipped with carriage T-slots and pre-drilled holes for quick mounting
  • Long Lasting Design: Smooth and quiet operation with no metal-to-metal contact to prevent catastrophic failure
  • Maintenance- Free: Self-lubricating FrelonGOLD® liners in the carriage for the life of the system for an oil-free 
  • Durable and Corrosion-Resistant Finish: Durable Ceramic Hard Coat Anodized finish on the rail and anodized carriage
  • Multiple Drive Options: Various drive options available such as lead screw and stepper motors

Precision & Compensated Clearances for Uni-Guide

Carriage Configuration Options

Running Clearance

Precision Series: Ceramic-coated rails and carriages offer superior corrosion resistance. The FrelonGOLD self-lubricating liner ensures optimal performance, supporting the highest loads, best wear life, and fastest speeds. Designed with the most precise running clearance for high-precision applications.

Compensated Series: Similar to the Precision Series but with additional clearance to accommodate misalignment.


Use the product configurator to determine the ideal running clearance for your linear motion application.


Design Considerations for UGA

Cantilevered Loads

The carriage will bind if the 2:1 ratio for cantilevered loads and drive forces is exceeded. This principle does not depend on load or force. The 2:1 Bearing Ratio defines the maximum allowable ratio of moment arm distance to bearing length that prevents binding or motion hindrance. It is often represented numerically as "2:1," where "2x" is the moment arm distance and "1x" is the bearing length. For example, if 2x equals 10 inches, then 1x must equal 5 inches.

Load / Force Cantilever Example

Shop Mini-Rail Linear Slides

Shop our standard off-the-shelf offerings or use the configurator to customize the perfect solution for your linear motion application.

Name Width (mm) Item Length (mm) Shop Link
MR07-0100-1 7 Carriage + Rail 100 Shop Now
MR07-0150-1 7 Carriage + Rail 150 Shop Now
MR09-0100-1 9 Carriage + Rail 100 Shop Now
MR09-0125-1 9 Carriage + Rail 125 Shop Now
MR09-0150-1 9 Carriage + Rail 150 Shop Now
MR12-0100-1 12 Carriage + Rail 100 Shop Now
MR12-0150-1 12 Carriage + Rail 150 Shop Now
MR12-0200-1 12 Carriage + Rail 200 Shop Now
MR15-0100-1 15 Carriage + Rail 100 Shop Now
MR15-0150-1 15 Carriage + Rail 150 Shop Now
MR15-0200-1 15 Carriage + Rail 200 Shop Now
MR15-0300-1 15 Carriage + Rail 300 Shop Now
MR15-0400-1 15 Carriage + Rail 400 Shop Now
MR20-0150-1 20 Carriage + Rail 150 Shop Now
MR20-0250-1 20 Carriage + Rail 250 Shop Now
MR20-0300-1 20 Carriage + Rail 300 Shop Now
MR20-0400-1 20 Carriage + Rail 400 Shop Now
MR20-0500-1 20 Carriage + Rail 500 Shop Now