The A 7B 4-SP709224 is an oil-impregnated bronze plain bearing with an inner diameter of 3.505 inches, an outer diameter of 4.006 inches, and a length of 3 inches. It is self-lubricating and designed for sliding applications. Dimensional tolerances for inner and outer diameters up to 2.5 inches are +0.0000 / -0.0015 inches; for sizes over 2.5 inches up to 3.5 inches, tolerances are +0.0000 / -0.0020 inches. Length tolerance for parts over 1.5 inches is ±0.0075 inches.
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-SP709224 |
| Product Name | 3.505" I.D., 4.006" O.D. By 3" Wide Bronze Bearing |
| Bushing Type | Sleeve |
| Design Units | Inch |
| Bearing ID | 3.5050 inch (89.03 mm) |
