Ball retainer linear bushings are accordingly based on Bronze, Aluminium, POM. They are machined some regular holes and embedded the steel ball. The new technology (circle groove) will prevent the ball getting out. As the ball diameter is larger than the retainer's thickness, the ball is out of the inner and outer surface of the retainer, the ball will face housing and shaft directly and keep the retainer hanging. And the ball diameter is more than the radii balance of housing and shaft, so it is over assembled but the motion between housing and shaft is very easy. This will keep high precision.

Product Feature:
Maximum guiding accuracy;
Backlash-free guiding;
Smooth running;
High loading capacity and guiding rigidity;
Rapid movements, high acceleration;
Long service life;
Minimum maintenance;
Special designs;

Product Specification/Models:
Material of Bushing:Brass,
Ball Material:SUJ2,
Ball Hardness:58HRC~

Application:
machine building, 
precision mechanics, 
optical engineering, 
pick & place technology, 
medical technology, 
printing and textile machines, 
electronics, 
semiconductor machines, etc. 

Other Information:
Traditional hole and shaft with relative motion are in clearance fit, the movement friction coefficient is large between hole and shaft, the shaft has micro swing during movement which is not applicable for some high precision requirement occasion. After using steel ball retaining ring, the shaft and the hole is not in direct contact but through the steel ball with micro interference in the middle, therefore it has high movement precision, the rolling friction replaces the sliding friction, rolling flexibly with small friction coefficient and long service life.
Using the oil-less or oil filling bushing to match with shaft in both rotating and moving occasion could also be satisfied, however, the motion accuracy is low. Using the rolling bearings can only satisfy the occasion for relative rotation while the steel ball retaining ring can satisfy both of the above mentioned occasion.