The S99NH2MBN0306 is a caged needle roller bearing designed for use with hardened shafts from 3 mm to 25 mm in diameter, offering high load capacity and a maximum speed of 48,000 rpm with oil lubrication. It has a shaft diameter of 3 mm, an outer diameter of 6.5 mm, and a face width of 6 mm. The roller cup is made of case-hardened steel, the needles of 52100 hardened chrome steel, and the cage of low carbon steel. Minimum shaft surface hardness is HRC 58. The bearing requires a shaft housing bore tolerance of N6 for steel or cast iron.
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 | S99NH2MBN0306 |
| Product Name | Mount Bearing on Hardened Shaft or Use Hardened Inner Race |
| Application | Aerospace |
| Design Units | Metric |
| Bore | 0.1181 inch (3.000 mm) |
