A 7B 4-P109 is an oil-impregnated bronze plain bearing with an internal diameter of 0.627 inches, an outer diameter of 0.7535 inches, and a length of 0.373 inches, designed for self-lubricating applications. The bearing is sized for inch-based mounting and features tolerances of +0.001/-0.000 inches on the internal diameter, +0.000/-0.001 inches on the outer diameter, and ±0.005 inches on length. It is part of the standard "P" series of sintered bronze bearings.
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-P109 |
| Product Name | 0.627" I.D., 0.7535" O.D. By 0.373" Wide Bronze Bearing |
| Bushing Type | Sleeve |
| Design Units | Inch |
| Bearing ID | 0.6270 inch (15.93 mm) |
