Bearing radial clearance smaller better?
Bearing radial clearance smaller better?
Not all of the bearings are required to work a minimum clearance, you must choose the appropriate clearance according to the conditions. GB 4604-93, the bearing radial clearance group is divided into five groups -2, 0 group 3, 4, 5 groups, progressively larger clearance values, where 0 is set as the standard clearance. Basic radial clearance group for general operating conditions, temperature, and commonly used conventional interference fit; axis in special conditions of high temperature, high speed, low noise, low friction and other work 承则宜 large selection of radial clearance; to precision spindle, machine tool spindle bearings should use a smaller radial clearance; roller bearings for holding a small amount of clearance work. In addition, separate type of bearing is indifferent clearance; and finally, after bearing installed operating clearance, clearance than the small primitive pre-installation, since the bearing to withstand a certain load rotation, as well as fit and load bearing generated elastic deformation.
