The A 7M 7-018 is a thrust bearing component consisting of a molded nylon retainer and hardened S.A.E 1018 steel balls, designed for low-friction axial load support. It is used in conjunction with a CR1075 steel washer and is rated for 126 lbf at 15 rpm and 70 lbf at 100 rpm. The retainer is rated for maximum operating temperatures up to 250°F. The complete bearing set has a bore diameter of 3/16 inch with a tolerance of 0.191 to 0.195 inch, an outer diameter of 1/2 inch with a tolerance of 0.492 to 0.499 inch, and a bearing thickness of 0.190 to 0.196 inch. The assembly includes seven balls, each with a diameter tolerance of ±0.0001 inch. It is designed for use in inch-based applications and complies with S.A.E 1018 steel material specifications for the balls and CR1075 steel for the washer.
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 7-018 |
| Product Name | Nylon retainer with hardened stainless steel balls |
