A 7B 4MP081208 is a sintered bronze plain bearing with an 8 mm bore diameter, 12 mm outside diameter, and 8 mm width, designed for self-lubricating applications. The bearing is made of oil-impregnated bronze and operates without external lubrication. Tolerances for bore diameter and outside diameter are specified as +0.040/+0.025 mm and +0.034/+0.019 mm respectively, consistent with the metric standard series. The bearing is suitable for applications requiring low-friction rotation and load support under continuous operation.
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 4MP081208 |
| Product Name | 8 mm Bore, 12 mm outside Diameter, Plain Sintered Bronze Bearing |
| Bushing Type | Sleeve |
| Design Units | Metric |
| Housing Bore | 0.3150 inch (8.00 mm) |
| Bearing OD | 0.4724 inch (12.00 mm) |
