The A 7Z 7M0717ST is a stainless steel thrust bearing set composed of 440C stainless steel balls hardened to HRC 58-65, a molded nylon retainer rated for temperatures up to 120°C, and a 410 stainless steel washer hardened to HRC 38-42. It has a bore diameter of 7 mm with a tolerance of 7.18 to 7.06 mm, an outer diameter of 17 mm with a tolerance of 16.97 to 16.79 mm, a ball circle diameter of 11.9 mm, and a total bearing thickness of 4.24 to 4.04 mm. The bearing contains nine balls and has a dynamic load rating of 423 N at 100 rpm and 222 N at 15 rpm. Load capacity at 900 rpm is approximately half the value at 100 rpm.
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 | Thrust Bearings |
| Product Number | A 7Z 7M0717 |
| Product Name | A 7Z 7M0717 Comprised of 2 Washers and a Retainer with Balls |
