Bearing installation and maintenance, The second stage)

Bearing installation and maintenance, The second stage) 2018 - 08 - 07 / emperor da bei bearing 2, taper hole bearing installation and dismantling, Below) Taper hole of bearing installation clearance adjustment, the measuring range of the taper hole bearing depends on the bearing on the conical journal or conical sleeve into the distance. Push the size determines the amount of reduction of clearance. Prior to installation must first the initial measurement of bearing radial clearance. Push while measuring two columns of the radial clearance, meet the requirements of the interference fit clearance and ideal. For large size bearing, axis to the installation, because of the weight of outer elliptical deformation may occur, such as changing the shape of bearing the lower measuring clearance, measured data will be greater than the actual clearance, clearance can cause interference with the error amount is too large, which left the clearance is too small. Therefore, as shown in the figure below, the horizontal transverse position 2 place clearance clearance c of a, b, and the lower half of the sum of as clearance is best. When you measure the clearance to straighten outer ring. Set set and other technical requirements for withdrawal of sleeve and withdrawal sleeve materials commonly used high quality carbon structural steel manufacturing ( 42 crmo, tempering hardness: HB220 - 250). , but also can meet the performance requirements of other materials. Tapered bushing materials tensile strength should not be less than 412 mpa, yield strength shall not be less than 250 mpa. The inner diameter of the tapered bushing, cone diameter tolerance and radial runout, roughness, surface quality on the surface of the cone should comply with GB/T9160. 1 - 2006. Tapered bushing of common thread according to GB/T2516 - 2003 specified tolerance zone 6 g, trapezoidal thread according to GB/T5796. 4 - 2005 specified tolerance zone 7 e. Conical liner inspection method according to GB/T9160. 1 - 2006. Lock nut and the locking device of the technical requirements such as material, dimension and tolerance according to GB/T9160. 2 - 2006. Recommended by the radial clearance reduction reference value