Limit Fixing Block – HGR

Inc. GST

This rail-mounted mechanical accessory restricts the travel range of linear bearing carriages on 15 mm or 20 mm profile guide rails to prevent over-travel. Interfacing with standard HGH and HGW systems, the aluminium alloy component clamps into the rail groove via socket head screws at end-of-travel or mid-span positions. It features an integrated rubber or aluminium buffer pad to absorb impact, functioning as a physical stroke limit and safety stop. Typical applications include CNC machinery, automated positioning systems, 3D printers, and industrial automation framing where protection of bearing blocks and adjacent components is required.

Description

Technical Overview

The limit fixing block for HGR linear guide rails serves as a mechanical rail-mounted accessory. Specifically, this component defines and restricts the travel range of linear bearing carriages on 15 mm/20 mm profile guide rails. Because it functions as a physical end-stop solution, it actively prevents slider blocks from unintentionally moving beyond the rail limits during operation or maintenance.

Furthermore, the component mounts directly onto the rail profile and interfaces seamlessly with standard HGH/HGW carriage systems. By providing a fixed mechanical barrier, it helps maintain a controlled stroke length. As a result, this restriction significantly reduces the risk of carriage run-off in linear motion assemblies.

Applications

Engineers and machinery builders typically use the limit fixing block in CNC machines, automated positioning systems, 3D printers, and other linear motion equipment. In these setups, the systems require strictly controlled carriage travel. Therefore, technicians install the block at the ends of HGR linear rails or at defined intermediate positions to limit the usable travel distance.

Moreover, in automation and machine framing systems, operators commonly deploy this accessory as a safety stop. Consequently, the block protects both the bearing blocks and surrounding components from impact damage caused by over-travel or accidental movement.

Technical Specifications

Specification	Value
Compatibility	HGR linear rails; fits HGH and HGW bearing blocks.
Function	Physical stroke limit — end-of-rail run-off prevention or mid-rail working-area restriction.
Materials	High-grade aluminium alloy body with rubber or plastic buffer pads.
Bumper	Anti-collision rubber or aluminium buffer to absorb shock and reduce noise.
Mounting Hardware	Clamped to rail groove using standard hex/socket head screws (commonly M4).
Installation	Bolts directly to rail; can be placed at rail ends or mid-span as required.

Maker Store Tips and Tricks

Verify compatibility with your specific HGR rail profile before installation.
Tighten clamping screws to recommended torque for secure fit; use threadlocker if subject to vibration.
Replace buffer pads if worn to maintain shock absorption.