TQI HGR 20R 4000C Precision LM Rail | RG Roller Series

The TQI LM RAIL HGR 20R 4000C RG is an elite linear motion track designed for the most demanding industrial applications. Spanning a continuous 4000mm (4 meters), this rail is engineered to provide a seamless, high-precision path for heavy-duty CNC gantries and automated machinery. As part of the RG series, it is optimized for use with roller-type carriages, which offer significantly higher stiffness and a greater load-bearing surface compared to standard ball-type systems. Manufactured from high-grade hardened alloy steel, the HGR 20R undergoes precision grinding to ensure exceptional parallelism and straightness over its entire length. This minimizes friction and vibration, even under heavy cutting forces, making it the ideal foundation for large-format metal milling, stone routing, and precision industrial robotics where long-travel accuracy and structural integrity are non-negotiable.

Ultra-high load capacity designed for heavy industrial machinery
Continuous 4000mm length for seamless long-travel axis movement
RG series technology for superior rigidity and vibration dampening
Surgical linear precision for high-accuracy CNC routing
Hardened steel construction for extreme wear resistance
Precision-ground mounting surfaces for stable machine integration

Engineering Analysis & Technical Data

Technical Parameter	Specification Details
MODEL NUMBER	HGR 20R 4000C RG
RAIL WIDTH	20 mm
RAIL LENGTH	4000 mm
MATERIAL	Hardened High-Grade Steel Alloy
ROLLING ELEMENT COMPATIBILITY	RG Series Rollers
MECHANICAL	precisionGrade: Industrial Precision Certified \| straightnessTolerance: High-Accuracy Graded \| surfaceHardness: HRC 58-62 (Induction Hardened)

Industrial Applications

Usage Scenario	Target Industry
Large-Format Industrial CNC Routers (X and Y Axes)	Machine Tool Manufacturing (OEM)
Heavy-Duty Metal Milling and Machining Centers	Heavy Engineering and Metal Fabrication
Precision Marble, Stone, and Granite Cutting Tables	Stone Processing and Architectural Masonry
Automated Material Handling and Gantry Robotics	Automotive and Aerospace Production
Aerospace and Automotive Fabrication Systems	Industrial Factory Automation
High-Rigidity Vertical Machining Axis Rails	General Engineering

Technical FAQ

Can this 4000mm rail be cut to a specific length?

Yes. While the standard length is 4000mm, we offer precision cutting services to meet your exact machine dimensions. We can also provide end-machining for butt-jointing if your travel requirements exceed 4 meters.

Is the HGR 20R rail compatible with ball-type HGH blocks?

While the dimensions are similar, the 'RG' series rail is specifically optimized for roller-type carriages. Using ball-type blocks on a roller-optimized rail can result in uneven wear. For maximum rigidity, we recommend pairing this rail with TQI RG series roller blocks.

How do I ensure the rail stays straight over 4000mm?

Proper installation is key. The rail should be mounted on a precision-milled or ground base. Use a dial indicator and follow the recommended bolt-tightening sequence to ensure the rail maintains its surgical straightness across the entire 4-meter span.

Detailed Overview of TQI HGR 20R 4000C Precision LM Rail | RG Roller Series

Advanced Engineering & Integration

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