HIWIN HGW20HC Linear Guide Slider
The HGW20HC is a heavy load, long flange type linear guide slider from HIWIN's HG Series, engineered for seamless integration with HGR20 profile rails. It features a four-row ball bearing system with 45° contact angles, delivering equal load capacity across radial, reverse radial, and lateral directions, complemented by self-aligning capability to absorb minor installation errors.
The HGW20HC is a heavy load, long flange type linear guide slider from HIWIN's HG Series, engineered for seamless integration with HGR20 profile rails. It features a four-row ball bearing system with 45° contact angles, delivering equal load capacity across radial, reverse radial, and lateral directions, complemented by self-aligning capability to absorb minor installation errors. The extended length flange block design provides a larger contact area, significantly enhancing load capacity and static moment ratings beyond standard CC type blocks, making it ideal for industrial applications requiring robust stability and precision with top/bottom mounting flexibility.
Model Code Breakdown:
- HGW: Flange block, HG Series (Heavy load)
- 20: Nominal rail width (20mm)
- HC: Heavy load capacity, long block configuration
Core Features
- Four-way equal load capacity (radial, reverse radial, lateral) for balanced performance under multi-directional forces
- 45° contact angle optimizes load distribution and structural rigidity, enabled by circular-arc groove design
- Self-aligning capability compensates for minor parallelism errors between mounting surfaces, simplifying installation
- Ball retainer design prevents balls from dislodging during rail separation, enabling safe and easy assembly
- Extended-length block design increases contact area, boosting load capacity and static moment ratings beyond standard CC type blocks
- Flange-type construction allows top AND bottom mounting flexibility, expanding application versatility
- Available with preload options (Z0: Light, ZA: Medium, ZB: Heavy) and accuracy classes (C, H, P, SP, UP)
- Compatible with HGR20 profile rails (20mm width)
Technical Specifications
Dimensions (mm)
- Total height (H): 30
- Height above rail (H₁): 4.6
- Rail contact height (N): 21.5
- Slider width (W): 63
- Overall length (L): 92.2
- Effective length (L₁): 65.2
- Mounting hole spacing (B): 53
- Mounting hole edge distance (B₁): 5
- Inner mounting hole spacing (C): 40
- K₁: 17.6
- K₂: 6
- Mounting hole diameter (G): 12
- Mounting bolt size (M): M6
- T: 8
- T₁: 10
- T₂: 9.5
- H₂: 6
- H₃: 6
- Mass: 0.52 kg
Load Ratings & Static Moments
- Basic dynamic load rating (Cr): 32,700 N (32.7 kN)
- Basic static load rating (Cor): 47,960 N (47.96 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.)
- HGW20HCZ0H: Z0 preload, H accuracy (Article No.: 5-001129)
- HGW20HCZAC: ZA preload, C accuracy
- HGW20HCZBP: 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 M6 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 (HG-20-E2-KIT-SS/DD/ZZ/KK) available, extending relubrication intervals significantly
- Standard SS (Scraper Seal, Article No.: 5-000072); optional enhanced seals (DD, ZZ, KK, etc.) available separately
Compatible Rail & Accessories
- Matches HGR20 profile rails (20mm width)
- Optional clamping elements (HK2001A, MK2001A, MKS2001A) available for position locking
Application Areas
- CNC machine tools
- Industrial automation systems and robotic gantries
- Semiconductor and electronics manufacturing equipment
- Injection molding machines
- Material handling systems with medium-to-heavy payloads
- Precision measuring instruments requiring enhanced rigidity
- Any application requiring robust load capacity, extended contact area, and mounting flexibility with a flange block design
