CNC Linear Guide Rail Set 20mm (High Rigidity) | Fits HGH20CA Series
Compatible Replacement for HIWIN HGH20CA
This 20mm linear guide block is engineered as a 100% interchangeable alternative to the HIWIN HGH20CA. It matches the original datasheet specifications for dimensions, load ratings (17.75 kN), and stiffness, making it an ideal cost-effective solution for CNC routers, pick & place machines, and linear stages.
Engineering Data / Performance Specs
Dimensions and load ratings comply with ISO standard series for Size 20.
| Dimensional & Mechanical Data | |
|---|---|
| Model Number | HGH20CA (Square Type / Heavy Load) |
| Nominal Rail Width (W) | 20 mm |
| Basic Dynamic Load Rating (C) | 17.75 kN |
| Basic Static Load Rating (C0) | 27.76 kN |
| Static Moment (MR) | 0.38 kN-m |
| Static Moment (MP / MY) | 0.23 kN-m |
| Mounting Bolt Size | M5 x 16 |
Structure & Features
- 4-Row Circular Arc Design: Features a 45° contact angle design that ensures equal load capacity in all four directions (radial, reverse radial, and lateral). This is critical for maintaining accuracy under complex loads.
- Material Standard: Block body and balls are manufactured using GCr15 Bearing Steel, hardened to HRC 60-62 for excellent wear resistance.
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Lubrication Guide
⚠️ Critical: Blocks are shipped with anti-rust oil, NOT lubricant. You must grease them before use.
- Grease Type: Lithium Soap-based Grease (NLGI No.2).
- Initial Fill Amount: Approx. 2 cm³ per block (Fill slowly until grease overflows slightly).
- Refill Interval: Every 100km of travel distance, or every 3-6 months depending on operating speed.
- Method: Inject via the supplied M5 grease nipple.
Installation & Mounting
- Surface Prep: Ensure the mounting surface is flat. Rough surfaces will reduce accuracy and lifespan.
- Datum Plane: Press the block reference edge firmly against the mounting shoulder before tightening.
- Torque Sequence: Tighten the 4 bolts (M5) diagonally (X-pattern) in 2-3 stages. Do not fully tighten one bolt at a time.
Accuracy & Preload Class
- C (Normal): +/- 0.1mm (Standard Stock)
- H (High): +/- 0.03mm (Recommended for Precision)
- Z0 (Light): Smooth motion for automation.
- ZA (Medium): Recommended for CNC routers.
Packaging
Included in Box: 1x HGH20CA Linear Block, 1x Grease Nipple (M5).
Protection: Vacuum sealed in anti-rust bag, individually boxed.
*Disclaimer: HIWIN® is a registered trademark of HIWIN Technologies Corp. This product is an aftermarket replacement part manufactured by YourBrand and is not affiliated with HIWIN. All technical data is provided for compatibility reference.
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