The ball cage between balls eliminates collision noise. The return pipe does not have a lip so that the ball is picked up at a tangential direction and collision noise is eliminated. These devices result in low noise and high sound quality.
Long-term maintenance-free operation
The ball cage acts as a lubricant reservoir. Adding the optional wire ring and the lubricator QZ * makes long-term maintanance-free operation possible even in adverse environments (foreign matter or coolant).
The ball cege eliminates ball to ball friction of balls and improves the torque characteristics greatly.A pre-load dynamic torque fluctuation is reduced and it is possible to achieve excellent sliding.