HIWIN HGW25HC Linear Guide Slider

Model Code Breakdown:

• HGW: Flange block, HG Series (Heavy load)
• 25: Nominal rail width (25mm)
• HC: Heavy load capacity, long block configuration

Core Features

1. Four-way equal load capacity (radial, reverse radial, lateral) for balanced performance under multi-directional forces
2. 45° contact angle optimizes load distribution and structural rigidity, enabled by circular-arc groove design
3. Self-aligning capability compensates for minor parallelism errors between mounting surfaces, simplifying installation
4. Ball retainer design prevents balls from dislodging during rail separation, enabling safe and easy assembly
5. Extended-length block design increases contact area, boosting load capacity and static moment ratings
6. Flange-type construction allows top AND bottom mounting flexibility
7. Available with preload options (Z0: Light, ZA: Medium, ZB: Heavy) and accuracy classes (C, H, P, SP, UP)
8. Compatible with HGR25 profile rails (25mm width)

Technical Specifications

Dimensions (mm)

• Total height (H): 36
• Height above rail (H₁): 5.5
• Rail contact height (N): 23.5
• Slider width (W): 70
• Overall length (L): 104.6
• Effective length (L₁): 78.6
• Mounting hole spacing (B): 57
• Mounting hole edge distance (B₁): 6.5
• Inner mounting hole spacing (C): 45
• K₁: 21
• K₂: 6
• Mounting hole diameter (G): 12
• Mounting bolt size (M): M8
• T: 8
• T₁: 14
• T₂: 10
• H₂: 6
• H₃: 5
• Mass: 0.8 kg

Load Ratings & Static Moments (Official HIWIN Data)

• 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 (0.00–0.02)
• 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 (Official Article No.)

• HGW25HCZ0C: Z0 preload, C accuracy
• HGW25HCZAH: ZA preload, H accuracy (Article No.: 5-001174)
• HGW25HCZBP: ZB preload, P 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 extended fatigue life
• Surface treatment: Black oxide finish for corrosion protection

Installation & Accessories

Mounting Notes

• Flange block design enables secure top OR bottom mounting configuration
• Four M8 mounting holes for rigid attachment
• Self-aligning range accommodates minor parallelism errors between mounting surfaces
• Recommended mounting torque: Follow HIWIN official installation guidelines

Lubrication & Sealing

• Standard lubrication nipple for grease/oil lubrication
• Optional E2 self-lubricating variant available, extending relubrication intervals significantly
• Standard SS (Scraper Seal) for dust protection; optional enhanced seals (DD, ZZ, KK, etc.) available separately

Application Areas

• Heavy-duty CNC machine tools
• Industrial automation systems and robotic gantries
• Semiconductor and electronics manufacturing equipment
• Injection molding machines
• Material handling systems with heavy payloads
• Precision measuring instruments requiring enhanced rigidity
• Any application requiring maximum load capacity, extended contact area, and high stability with flange mounting flexibility