HIWIN HGH20CA Linear Guideway Slider
The HIWIN HGH20CA is a heavy-duty square-type block belonging to the HG Series of high-rigidity ball linear guideways, designed for applications requiring exceptional load capacity and stability. It features a four-row ball track design with circular-arc groove and structure optimization, providing equal load ratings in radial, reverse radial, and lateral directions, as well as self-aligning capability to absorb installation errors.
The HIWIN HGH20CA is a heavy duty square type block belonging to the HG Series of high-rigidity ball linear guideways, designed for applications requiring exceptional load capacity and stability. It features a four-row ball track design with circular-arc groove and structure optimization, providing equal load ratings in radial, reverse radial, and lateral directions, as well as self-aligning capability to absorb installation errors. The HGH20CA is a high block variant (H designation) with top mounting (A designation) and heavy load capacity (C designation), ideal for demanding industrial applications.
Key Features
- Heavy-Duty Design: Optimized structure with circular arc groove for higher load capacity and rigidity than similar products
- 4-Way Equal Load Capacity: Four-row ball tracks arranged at 45° contact angle enable equal load-bearing in all four directions
- Self-Aligning Capability: Absorbs minor installation surface errors through ball elastic deformation and contact point transfer, ensuring stable and precise operation
- Ball Retainers: Prevent balls from falling out during assembly when the block is removed from the rail
- Interchangeability: Precise dimensional control allows any HGH20CA block to be used with any HGR20 rail in the same series while maintaining tolerance
- Preload Options: Z0 (light preload: 0~0.02C), ZA (medium preload: 0.03~0.05C), ZB (heavy preload: 0.06~0.08C)
- Accuracy Classes: C (normal), H (high), P (precision)
- Long-Life Lubrication: Compatible with HIWIN E2 long time lubrication units for extended relubrication intervals (can achieve lifetime lubrication in some applications)
Technical Specifications
Dimensions (in mm)
| Parameter | Description | HGH20CA |
|---|---|---|
| H | Total height | 30 |
| H₁ | Mounting surface to top | 4.6 |
| N | Rail contact height | 12 |
| W | Block width | 44 |
| B | Block body width | 32 |
| B₁ | Seal thickness | 6 |
| C | Mounting hole distance (width) | 36 |
| L₁ | Mounting hole distance (length) | 50.5 |
| L | Block length | 77.5 |
| K₁ | Mounting hole center distance | 12.25 |
| K₂ | Mounting hole edge distance | 6 |
| G | Mounting hole diameter | 12 |
| M | Mounting bolt size | M5 |
| l | Mounting bolt depth | 6 |
| T | Rail width | 8 |
| H₂ | Seal height | 6 |
| H₃ | Rail contact depth | 6 |
| Mass | Block weight | 0.3 kg |
Load Ratings and Torques
| Parameter | Description | HGH20CA |
|---|---|---|
| Cdyn | Dynamic load rating | 27,100 N |
| C₀ | Static load rating | 36,680 N |
| M0X | Static moment around X-axis | 270 Nm |
| M0Y | Static moment around Y-axis | 280 Nm |
| M0Z | Static moment around Z-axis | 280 Nm |
Compatible Rail
The HGH20CA is designed to be used with the HGR20 profile rail (20 mm width, 17.5 mm height). The rail's fixing bolt size is M5x16. HIWIN offers various rail options including HGR20R (right-hand thread) and HGR20T (left-hand thread) in different lengths and accuracy classes.
Accessories
HIWIN provides a comprehensive range of accessories for the HGH20CA:
Seal Sets
| Product Number | Description |
|---|---|
| HG-20-SS | Standard seal |
| HG-20-DD | Double end seal |
| HG-20-ZZ | End seal with metal scraper |
| HG-20-KK | Double end seal with metal scraper |
| HG-20-SW-C | End seal with double lip |
| HG-20-ZWX-C | End seal with double lip and optimized metal scraper |
| HG-20-SSL | Low-friction seal |
Long-term Lubrication Units
| Product Number | Description |
|---|---|
| HG-20-E2-KIT-SS | Long-term lubrication unit for standard seal |
| HG-20-E2-KIT-DD | Long-term lubrication unit for double end seal |
| HG-20-E2-KIT-ZZ | Long-term lubrication unit for end seal with metal scraper |
| HG-20-E2-KIT-KK | Long-term lubrication unit for double end seal with metal scraper |
Clamping Elements
| Product Number | Description |
|---|---|
| HK2001A & PHK20-1 | Clamping element |
| MK2001A | Clamping element |
| MKS2001A | Clamping element |
Applications
The HGH20CA is ideally suited for:
- Heavy-duty industrial machinery
- Machine tools (milling, turning, grinding)
- Automation systems
- Material handling equipment
- Injection molding machines
- Presses and stamping equipment
- Woodworking machinery
- Any application requiring high load capacity, rigidity, and precision linear motion
Model Naming Convention
- HGH: Series designation (HG = high rigidity, H = square type block, high variant)
- 20: Size (20 mm rail width)
- C: Load capacity (C = heavy load)
- A: Mounting from top
- Z0/ZA/ZB: Preload class (Z0 = light, ZA = medium, ZB = heavy)
- C/H/P: Accuracy class (C = normal, H = high, P = precision)
