The HIWIN HGH25CA is a linear guide block designed to work with a 25mm rail (HG25 series). It's part of the HG series from HIWIN, known for high load capacity, precision, and rigidity.
HGH = Flange type carriage/block (wide and mountable from top or bottom)
25 = Compatible with 25mm width linear rail
C = Interchangeable type (carriage and rail are not paired at the factory)
A = High preload class (higher rigidity and minimal play)
⚙️ Key Features
Feature Description
Guide Type Linear motion guideway
Model HGH25CA
Block Style HGH = Flanged, square type
Rail Size 25mm (HG25)
Preload Class A = Light preload for higher rigidity
Precision Grade Available in N (normal), H, P, SP, UP
Interchangeable Yes (C type = block and rail sold separately but are interchangeable)
📐 Technical Dimensions (HGH25CA Block)
Parameter Value
Height (H) 36 mm
Width (W) 70 mm
Length (L) 91.4 mm
Mounting hole spacing 52 mm (longitudinal), 26 mm (lateral)
Bolt size M6
Weight ~0.65 kg
💪 Performance Characteristics
4-row circular arc contact: Ensures equal load capacity in all directions (radial, reverse radial, lateral).
Self-aligning capability: Adjusts to mounting surface errors.
Smooth motion: Low friction for accurate positioning.
High rigidity: Suited for heavy loads and high-speed movement.
🏗️ Applications
Used in:
CNC routers and mills
3D printers
Industrial automation
Robotic arms
Medical devices
Semiconductor equipment
🧰 Maintenance Tips
Regularly clean the rail and block
Use compatible lubricants (grease or oil, depending on application)
Replace seals if they are worn
Check preload and smoothness periodically
