| 摘要 |
<p>PROBLEM TO BE SOLVED: To avoid an effect of grinding heat, to improve machining accuracy, shorten cycle time, and to reduce costs. SOLUTION: A bearing device for a driven wheel comprises an outer member 10 having a plurality of rows of track surfaces 11 on its inner periphery, a hub wheel 22 having a track surface 24 and mounting flange 25 of the driven wheel, an inner wheel 23 having a track surface 27 and pressed into the outer periphery of the hub wheel 22, and a plurality of rows of rolling bodies 30. In this bearing device, the hub wheel 22 is formed to be hollow, a radiating surface is formed on the inner peripheral surface of the hub wheel 22 to improve self radiating force, grinding liquid can be supplied to a hollow part 21, and a cooling effect due to the grinding liquid is provided.</p> |
