Deep groove ball bearing website precision grade and clearance test methods

Deep groove ball bearing website precision grade and clearance test method of deep groove ball bearings mainly use the stamping steel cage ( Waveform, crown. 。 。 Single row, S. 。 。 Double row) Phenolic resin, copper alloy, or sliced cage, synthetic resin retainer, etc. Different operation conditions, the use of the cage is also different. The level of deep groove ball bearings, deep groove ball bearings into dimensional accuracy and precision of rotating accuracy, precision grade can be divided into P0, P6, P5, P4, P2 five grades, from P0 began to improve. The special purpose use P0 stage deep groove ball bearing is sufficient, for some specific conditions or situations, you need to use the P5 level or higher precision bearing. The precision of the deep groove ball bearings, deep groove ball bearing dimension precision is associated with shaft and shell installation, generally refers to: 1, bearing inside diameter, outside diameter, width and allowable deviation of the width of the assembly; 2, chamfer size allowed threshold value; 3 and the change of width allowed amount. Deep groove ball bearing rotating accuracy associated with bearing of revolving quantity: 1, the inner ring with foreign companies allow radial runout and axial beat; 2, inner ring allows transverse beating; 3, outer diameter plane inclination to allow changes. Radial clearance detection method has two kinds: 1, feeling method: turn the bearing by hand, smooth and flexible bearing status, BuKa lag; For single-row radial ball bearing, bearing outer ring average, even if the radial clearance is only 0. 01 mm, outside the bearing of the most along the axial movement quantity there will be zero. About 1 mm. 2, measurement method: use a feeler, confirm that the maximum load position of the deep groove ball bearings, with 180 ° between the ball and inner ring or outer ring into feeler, suitable thickness of elastic feeler is bearing radial clearance; Measured with a dial indicator, dial gauge to zero after jacking bearing outer ring, the reading of the dial gauge is bearing radial clearance. Deep groove ball bearing is mainly used in automobile industry, motor, household appliances, instruments and meters, internal combustion engines, construction machinery, railway vehicle, loading and unloading handling machinery, agricultural machinery, all kinds of industrial machinery and other fields.