BNDIRXM202517 is an alloy steel inner race for needle bearings, hardened to HRC 58 minimum, with a 20 mm bore and 25 mm outer diameter, designed for press-fit installation on soft shafts. It features an O.D. ground to 0.4 µm AA surface roughness, chamfered corners for assembly, and meets H6 bore and h5 outer diameter tolerances per metric standards. The part is used as a hardened bushing or inner race where shaft translation requires a wider profile.
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 | Needle Roller Bearings |
| Product Number | BNDIRXM202517 |
| Product Name | 17mm ID, 22.007mm OD Alloy Steel Inner Race for Needle Bearing |
| Application | Aerospace |
