HIWIN HGH25 Linear Guide Slider (HGH25CA / HGH25HA)
The HIWIN HGH25 series consists of high block square type linear guide sliders (HGH = High block, Square type) designed for heavy load applications, paired with HGR25 profile rails. These sliders feature four rows of bearing balls arranged at 45° contact angles, providing equal load capacity in radial, reverse radial, and lateral directions.
The HIWIN HGH25 series consists of high block square-type linear guide sliders (HGH = High block, Square type) designed for heavy load applications, paired with HGR25 profile rails. These sliders feature four rows of bearing balls arranged at 45° contact angles, providing equal load capacity in radial, reverse radial, and lateral directions. The circular-arc groove design and structural optimization deliver exceptional rigidity and load handling capability beyond comparable products. A ball retainer prevents balls from falling out when the slider is removed from the rail, simplifying installation.
Core variants:
- HGH25CA: Standard load capacity, compact length
- HGH25HA: Heavy load capacity, extended length
Key Features
- Four-way equal load capacity (radial, reverse radial, lateral)
- Self-aligning capability to absorb minor installation errors
- High rigidity and precision for heavy industrial applications
- Ball retainer design for easy assembly and maintenance
- Available with various preload options (Z0: Light, ZA: Medium, ZB: Heavy) and accuracy classes (C: Normal, H: High, P: Precision, SP: Super Precision, UP: Ultra Precision)
- Compatible with HGR25 profile rails
HGH25CA Technical Specifications
Dimensions (mm)
- Total height (H): 40
- Height above rail (H₁): 5.5
- Rail contact height (N): 12.5
- Slider width (W): 48
- Mounting hole spacing (B): 35
- Mounting hole edge distance (B₁): 6.5
- Inner mounting hole spacing (C): 35
- Effective length (L₁): 58
- Overall length (L): 84
- Mounting hole diameter (G): 12
- Mounting bolt size: M6×8
- Mass: 0.51 kg
Load Ratings
- Basic dynamic load rating (Cr): 34,900 N (34.9 kN)
- Basic static load rating (Cor): 52,820 N (52.82 kN)
HGH25HA Technical Specifications
Dimensions (mm)
- Total height (H): 40
- Height above rail (H₁): 5.5
- Rail contact height (N): 12.5
- Slider width (W): 48
- Overall length (L): 104.6
- Effective length (L₁): 78.6
- Mass: 0.8 kg
Load Ratings
- Basic dynamic load rating (Cr): 42,200 N (42.2 kN)
- Basic static load rating (Cor): 69,070 N (69.07 kN)
Preload & Accuracy Options
Preload Classes (Standard)
- Z0: Light preload (0.02)
- ZA: Medium preload (0.05–0.07)
- ZB: Heavy preload (0.09–0.11)
Accuracy Classes
- C: Normal accuracy
- H: High accuracy
- P: Precision
- SP: Super Precision
- UP: Ultra Precision
Example Part Numbers
- HGH25CAZ0H: HGH25CA, Z0 preload, H accuracy
- HGH25CAZAC: HGH25CA, ZA preload, C accuracy
- HGH25HAZBC: HGH25HA, ZB preload, C accuracy
Material & Hardness
- Slider body: High-strength alloy steel
- Bearing balls: Chrome steel (SUJ2 / 100Cr6 equivalent)
- Raceways: Through-hardened to HRC 60–66 for maximum wear resistance and fatigue life
- Surface treatment: Black oxide finish for corrosion protection
Installation Notes
- Mounting holes: M6 threads for HGH25CA, M8 threads for HGH25HA
- Recommended mounting torque: Follow HIWIN installation guidelines
- Self-aligning range: Compensates for minor parallelism errors between mounting surfaces
- Lubrication: Standard lubrication nipple for grease/oil lubrication; optional self-lubricating (E2) variant available
Application Areas
- Heavy-duty CNC machine tools
- Industrial automation systems
- Robotic arms and gantries
- Material handling equipment
- Injection molding machines
- Press machines and stamping equipment
- Any application requiring high rigidity, precision, and heavy load capacity in linear motion systems
