The S99NH2MBN0509 is a caged needle roller bearing designed for use on hardened shafts 5 mm in diameter, with a 9 mm bore and 9 mm face width. It supports a dynamic load capacity of 2384 N and a static load capacity of 1988 N, with a maximum speed limit of 39000 rpm when oil-lubricated. The bearing uses case-hardened steel for the roller cup, 52100 hardened chrome steel for the needles, and low carbon steel for the cage. It requires a shaft surface hardness of at least HRC 58 or an inner race for softer shafts. The housing bore must meet N6 tolerance for steel or cast iron. The bearing is engineered for high-speed operation, low friction, and high lubrication capacity.
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 | S99NH2MBN0509 |
| Product Name | Mount Bearing on Hardened Shaft or Use Hardened Inner Race |
| Application | Aerospace |
| Design Units | Metric |
| Bore | 0.1969 inch (5.000 mm) |
