353130 b compact railway wagon bearing inner ring assembly components technical requirements

353130 b compact railway wagon bearing inner ring 2019 - component assembly technology requirements 09 - 27 1. Place the plastic cage on the assembled roller mold, then well-sorted roller in cage hole, the inner ring again into, to be pressed mould below. Assembly roller, the mould should be higher than that of cage Kong Xiaoduan window of parts of the supporting roller and roller contact parts, keep the roller and gaps. 2. The voltage into the device to press the inner ring into model steel cage and roller components, pressed mould, rising with inner ring components, an inner ring components being connected is completed. Check model steel cage integrity, especially the check window beam and the window size end joint crack, if discover model steel cage crack damage must be scrapped. Inner ring assembly components, mold the height of the bearing inner ring parts should guarantee the inner ring after pressed into the roller ball base surface and inner ring big guard gaps. Pressed mould after the trip to the extreme position, should make the inner ring end face and pressed mould gaps. 3. Clearance test bring radial clearance put inner ring components support on tooling, to limit its movement, keep the instrument whose hands in the middle of the window frame beam position, along the radial measurement. Finger point must be in the measuring direction, move smoothly before and after the cage until you feel a hard point ( In the cage in the process of moving, roller may tip slightly) The distance between two limit position, which is a cage radial clearance. Should be separated by at least 120 & deg; 3 points in circumferential direction measurement is average, average should conform to the requirements of the 353130 b compact bearing assembly tolerances. In addition, three points of cage radial clearance the difference between the measured value should be greater than zero. 4mm。 Bring freedom axial clearance by tilting the axial clearance check free axial clearance measuring instrument. （ Source: the resources of railway vehicle platform)