The S99NH2-BN1612 is a caged needle roller bearing designed for use with hardened shafts between 1/8 inch and 1 inch in diameter. It has a bore of 0.5000 inches, an outer diameter of 0.6880 inches, and a width of 0.375 inches. The bearing supports a dynamic load rating of 1045 lbf and a static load rating of 1214 lbf, with a maximum speed of 20,000 rpm when lubricated with oil. The roller cup is made of case-hardened steel, the needles of 52100 hardened chrome steel, and the cage of low carbon steel. It features low rolling friction, high lubrication capacity, and low sensitivity to misalignment. Shaft surface hardness must be Rc 58 minimum, or an inner race must be used with softer shafts.
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 | S99NH2-BN1612 |
| Product Name | Mount Bearing on Hardened Shaft or Use Hardened Inner Race |
| Application | Aerospace |
