A 7M 7-112ST is a thrust bearing retainer and ball assembly designed for use with the A 7Z 7-112ST complete thrust bearing set, featuring 12 hardened 440C stainless steel balls and a molded nylon retainer rated for maximum 250°F operation. It is paired with a 410 stainless steel washer and supports a dynamic load rating of 352 lb at 15 rpm and 187 lb at 100 rpm. The complete bearing set has a bore diameter of 1-1/8 inches, an outer diameter of 1-3/4 inches, and a washer thickness of 1-7/16 inches with a tolerance of ±0.005. The retainer and ball assembly is not a complete bearing and requires the corresponding washer and races for operation.
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 | Bearing Retainers and Cages |
| Product Number | A 7M 7-112ST |
| Product Name | Nylon retainer with hardened stainless steel balls |
