A 7Z47-PSN312 is a needle roller pressbearing with a 5/16 inch bore, designed for press-fit installation in carbon steel housings with a black oxide finish. It supports a maximum radial load of 600 lbf at 35,500 rpm and is rated for operating temperatures from -22°F to +212°F. The bearing requires a shaft material with a hardness of Rc 58 to 64 and a surface finish of 16 µin. or finer. The panel hole diameter is 0.812 inch, and the flange height is 0.60 inch. It is self-aligning to ±5° and does not require precision holes for installation.
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 | A 7Z47-PSN312 |
| Product Name | 0.3125" Bore, 0.812" Panel hole size, Needle roller pressbearing |
| Type | Self-aligning |
