Wednesday 10 October 2012

Sealed Bearings

Sealed Bearings

The success of the bearing is due to the effective use of mathematics and geometry in its design.  The ball track path is oval in shape (for infinite ball flow) and both sides of the straight portion of the path are utilized.  Two openings in the retainer on the same ball circuit (unlike other linear bearings having one opening) permit balls to contact the shaft and the inner race of the housing in either path, but not at the same time.  For the balls to circulate, one path must be loaded and the other path must have clearance for the return of the balls.  The races or inner surface of the housing are geometrically interrupted so that at no time can two paths of one track system be in contact.  The clearance between the races permits the return flow of the balls.  This ability of the retainers to rotate within the housings and the balls to rotate in any direction allows simultaneous linear and rotary motion.  The longitudinal or reciprocal motion of the shaft causes the balls to circulate within their own track system.  The rotational motion of the shaft causes the balls to flow much like a typical rotary bearing.

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings

Sealed Bearings


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