The HGW-20-HC-ZA-C in Brief
The HIWIN part number HGW-20-HC-ZA-C is a HG Series Linear Guide Block. The HGW-20-HC-ZA-C is compatible with 20 mm HG Series Guide Rail. It is suitable for super heavy load duty and has a flange type mounting surface that can accept mounting bolts through the top or bottom of the mounting surface. To help maintain precision for many industrial applications, the HGW-20-HC-ZA-C has a medium preload and normal-level precision grade (in relation to other HG Series blocks).
HG Series – Heavy Load Ball Type Linear Guideway
HG series linear guideways are designed with load capacity and rigidity higher than other similar products with circular-arc groove and structure optimization. It features equal load ratings in the radial, reverse radial, and lateral directions, and self-aligning to absorb installation-error. Thus, HIWIN HG series linear guideways can achieve a long life with high speed, high accuracy and smooth linear motion.
Features of HG Series
By design, the circular-arc groove has contact points at 45 degrees. HG series can absorb most installation errors due to surface irregularities and provide smooth linear motion through the elastic deformation of rolling elements and the shift of contact points. Self-aligning capability, high accuracy and smooth operation can be obtained with an easy installation.
Because of precision dimensional control, the dimensional tolerance of HG series can be kept in a reasonable range, which means that any blocks and any rails in a specific series can be used together while maintaining dimensional tolerance. And a retainer is added to prevent the balls from falling out when the blocks are removed from the rail.
High Rigidity in All Four Directions
Because of the four-row design, the HG series linear guideway has equal load ratings in the radial, revers radial and lateral directions. Furthermore, the circular-arc groove provides a wide-contact width between the balls and the groove raceway allowing large permissible loads and high rigidity.