AirTAC LSH20R / LSH20RLX 20mm High Assembly Linear Guide Rail | Compatible with HGR20 | Custom Lengths up to 4 Meters

1. Executive Summary

The AirTAC LSH20RLX is the 20mm specification standard linear guide rail body (excluding the bearing block) within the LSH High Assembly Series.

It serves as the foundational track for building precise linear motion systems. The LSH20 rail achieves an excellent balance between volume and rigidity, meeting the requirements of compact spaces in electronic and semiconductor equipment while providing sufficient load capacity to support small robotic arms or gantry structures. Constructed from high-quality bearing steel and treated with high-frequency quenching, it achieves top-tier industrial standards for wear resistance and straightness.

2. Model Code Decoding

How to interpret LSH20RLX:

• LSH: Series Name — High Assembly Standard Type Linear Guide.

• 20: Specification Size — Nominal width of 20mm.

• R: Component Type — Rail.

  • This indicates the separately sold track section, suitable for replacing old rails, or for custom assembly with a chosen number of blocks.

• LX: Custom Length (Length Variable).

  • L represents Length.

  • X represents the variable. In actual purchasing, this will be a specific length in millimeters (e.g., LSH20R-1000L). This means you can purchase any length up to 4 meters, and the factory can perform precision cutting according to drawings.

3. Technical Specifications

(Essential Data for Mechanical Design and Drilling)

4. Key Benefits

A. Perfect Dimensional Balance (Compact & Rigid)

The 20mm rail is the preferred choice for many desktop and light industrial equipment applications. Compared to the 15mm rail (which primarily uses M4 screws), the 20mm rail offers significantly stronger screw locking force and higher torsional rigidity while occupying only slightly more installation space.

B. International Standard Interchangeability

The LSH20R rail maintains interchangeability with the rail mounting patterns of mainstream brands, such as HIWIN HGR20 and THK HSR20 (Note: Blocks and rails are generally recommended to be used from the same brand, but this mounting universality is crucial for equipment upgrades).

C. High-Precision Grinding Process

The V-shaped grooves (45-degree contact angle) on the rail surface undergo precise profile grinding. This results in extremely low surface roughness, ensuring quiet operation and exceptional smoothness of the block, thus reducing friction heat and wear.

D. Flexible Customization and Jointing

Supports customized lengths (LX) according to customer requirements. For ultra-long travel applications exceeding 4 meters, AirTAC offers precision jointing services to ensure a smooth transition where two rails connect, allowing the block to pass without jarring or stoppage.

5. Recommended Applications

The LSH20R rail is widely used in:

• 3D Printers (Industrial Grade): Z-axis lift or gantry beams in CoreXY structures.

• Electronic Assembly Equipment: X/Y axes in Pick-and-Place machines and dispensing machines.

• Small Laser Engraving Machines: Guide rails for light path movement.

• Medical Equipment: Sample movement axes in automatic biochemical analyzers.

• Automatic Door/Sliding Door Mechanisms: Straight-line movement mechanisms for medium-sized door panels.

6. Compatible Bearing Block Recommendation

This guide rail must be used with AirTAC LSH20 Series blocks:

• LSH20BK: Square Block (Narrow body, 44mm, most versatile).

• LSH20F1N: Flange Block (Wide body, 63mm, top-locking type).

Note: Do not mix with LSH15 or LSH25 blocks, and mixing with blocks from different brands is generally not recommended.

7. Ordering and Installation Tips

• End Distance (E-value) Specification: The distance from the first hole to the end face of the rail is called the E-value. If you are installing multiple rails in parallel, it is recommended to specify the same E-value to ensure hole alignment.

• Screw Specification: Always prepare high-strength M5 hex socket screws (12.9 grade recommended). The length usually depends on the thickness of the mounting base plate.

• Dust Caps: Green plastic hole caps are usually included with the rail purchase. Be sure to install them after tightening the screws to prevent dust accumulation in the screw holes, which could affect block operation.