1. Model Designation & Sizing Structure
HG: Heavy-Load, four-row recirculating ball-type series.
H: High-assembly square block (narrow profile without lateral mounting flanges).
Size Range: 15, 20, 25, 30, 35, 45, 55, and 65 mm (nominal rail widths).
Block Length Classifications:
- CA (Heavy Load): Standard block length featuring four top-tapped mounting holes.
- HA (Super Heavy Load): Elongated block length with increased active ball count for higher dynamic capacity and moment resistance.
2. Core Engineering Principles
Symmetrical 4-Way Equal Load (45° Contact Angle): Four precision-ground raceways configured at a 45-degree contact angle relative to the axes ensure equal load-bearing ratings across radial (downward), reverse-radial (upward), and lateral (side-to-side) orientations. This facilitates versatile installation in horizontal beds, vertical columns, wall slides, or inverted gantries without load derating.
Self-Aligning DF Structure: Utilizing a circular-arc groove design in a Face-to-Face (DF) configuration, the rolling elements adjust elastically under minor bed variations or mounting misalignments to absorb geometric deviations, maintaining smooth, low-friction motion.
Lateral Space Optimization: The non-flanged, square profile provides a narrow horizontal footprint, allowing parallel guide rails to be nested closely together or integrated within tight machine cavities (such as vertical Z-axis milling columns).
Rigid Top-Down Mounting: The top mounting surface is precision-ground flat with four blind threaded holes, establishing a secure, orthogonal interface with the carriage plate.