Precision Steel Ball Bushing™ Bearings (Closed Type) for end-supported applications, with a nominal bore diameter of 0.250 inches, an overall length of 0.750 to 0.735 inches, and a dynamic load capacity of 19 lbf, is designed for linear motion applications requiring low friction and precise alignment. The bearing has a closed construction with three retaining groove cycles and weighs 0.02 lb. It requires a housing bore of 0.5005 to 0.5000 inches for normal fit or 0.4995 to 0.4990 inches for press fit, with a tolerance class of 0.0015C or 0.0005C.
A bearing is a device that reduces friction between moving components by preventing metal-to-metal contact while assisting components (shafts, axles, and wheels) to freely rotate around a fixed axis, cutting down on heat generation and the amount of energy that is consumed. By replacing sliding motion with low-friction rolling motion, the life of the rotating components is increased. A bearing also keeps the shaft in the proper position, providing support and alignment and transferring the axial or radial loads to the housing.
The types of bearings that we offer include rolling element bearings, which consist of both ball bearings and roller bearings.
Balls are utilized as the rolling element in ball bearings; a retainer holds the balls in place and allows them to freely rotate. The balls are kept inside channels cut in both the inner and outer races. Because there is no surface contact between the balls and races, precision ball bearings have a lower load capacity for their size than other bearings.
| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Linear Bearings |
| Product Number | TA-4812 |
| Product Name | Thomson Closed Type Precision Steel Ball Bushing A4812 |
| Special Bearing Materials | Steel / Chrome Steel |
