Double-row Ball Water Pump Bearings - WB 1938 Series Product Description UTOT Water pump bearings basically consist of standard double row bearings, ball-ball type and ball-roller type. Water pump bearings do not have an inner ring but instead have raceways directly machined into the shaft....
Double-row Ball Water Pump Bearings - WB 1938 Series
Water pump bearings are double row bearings and, in contrast to conventional double row bearings, do not have an inner ring but raceways machined directly into the surface of the shaft. As a result, there is more space available for the rolling elements, giving a higher specific load carrying capacity than that of solutions with conventional single bearings.
Furthermore, it is possible in this type of bearing to achieve economical combinations of ball and roller rows. In a small design envelope, this gives a broad range of load carrying capacities. The use of a common outer ring for two rows of rolling elements prevents misalignment defects, eliminating the risk of undesirable distortion of the bearings.
A water pump bearing is a device used to
support the end of the water pump impeller shaft. Fitting securely
around the impeller shaft and tightly into the water pump housing, the
water pump bearing is designed to withstand the stress and load placed
upon the water pump shaft by the engine's accessory-belt drive system.
In many cases, the water pump bearing is charged with performing double
duty as a bearing for the rotating impeller shaft as well as a seal to
prevent the coolant from leaking out of the water pump housing.
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