Bearing measurement techniques - how to measure the clearance of rolling bearings

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Suitable for installation clearance contribute to the normal working of the rolling bearing. Clearance is too small, the rolling bearing temperature, does not work, as well as the rolling element stuck; clearance, equipment vibration, Rolling noise.cylindrical roller bearing The radial clearance of the check as follows: First, the feeling of France 1 hand to turn the bearings, the bearings should be smooth and flexible jam phenomenon.ball thrust bearing The bearing outer ring, hand shaking, even if the radial clearance is only 0.01mm, bearing the most above the point of axial movement of 0.10 ~~ 0.15mm. This method is dedicated to the single row radial ball bearings. Second, the measurement 1, with a feeler, to confirm the rolling bearing maximum load position in its 180 ° to the rolling element and the outer (inner) circle between Se Ruse-foot, elastic appropriate thickness of the feeler is the radial bearing clearance. This method is widely used in the self-aligning bearings and cylindrical roller bearings. 2, with a dial indicator to check, first dial gauge zero, and then from the top rolling bearing outer ring, dial gauge readings is the radial bearing clearance. Axial clearance of the check as follows: 1, the feeling of France Finger to check rolling bearing axial clearance, this method is applied to the shaft end exposed occasions. When the shaft end closed or due to other reasons rather than using a finger to check, you can check the flexible shaft is rotating.double row ball bearing 2, the measurement (1) with a feeler, methods of operation, but the axial clearance should be the same as the method of radial clearance with a feeler c = λ / (2sinβ) Where c - the axial clearance, mm; λ - feeler gauge thickness, mm; β - bearing cone angle (°). (2) with a dial indicator to check the crowbar, ran the axis so that the axis in the two extreme position, the difference between the dial gauge readings is the bearing axial clearance. Crowbar force can not be too large, otherwise the shell elastic deformation, even if the deformation is small, but also affect the measurement accuracy of axial clearance.