A 7M 7-081 is a thrust bearing component consisting of a molded nylon retainer and hardened steel balls, designed for use with the D787 A 7Z 7-081 complete thrust bearing set. The retainer supports nine steel balls, each with a diameter of 0.1563 inches, and is rated for 166 lbf at 100 rpm and 83 lbf at 900 rpm. The full bearing set includes a washer of CR1075 steel hardened to Rc 59-61 and operates with a bore diameter of 0.816 to 0.823 inches and an outer diameter of 1.303 to 1.312 inches. The retainer is rated for maximum temperatures of 250°F.
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 7-081 |
| Product Name | Nylon retainer with hardened stainless steel balls |
