A 7B 4-SP121807 is an oil-impregnated bronze plain bearing with an inner diameter of 0.378 inch, an outer diameter of 0.565 inch, and a length of 7/8 inch. It is self-lubricating and designed for sliding applications where low friction and maintenance-free operation are required. Length tolerance is ±0.005 inch as specified for parts up to and including 1-1/2 inch. The bearing is manufactured in an inch series using sintered bronze with a tolerance of +.0000 / -.0015 for inner and outer diameters up to 2-1/2 inch.
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 | Plain Bearings and Sleeve Bearings |
| Product Number | A 7B 4-SP121807 |
| Product Name | 0.378" I.D., 0.565" O.D. By 0.875" Wide Bronze Bearing |
| Bushing Type | Sleeve |
| Design Units | Inch |
| Bearing ID | 0.3780 inch (9.60 mm) |
