First, we must attach great importance to improve the pass rate the importance of bearing clearance

one of the bearings supporting the main quality indicators is the radial clearance. Radial clearance means, the total clearance of the outer channel and rolling the body in the diameter direction.

Therefore, the bearing clearance is not only one of the main parameters of the finished parts supporting the identification of qualified products bearing is qualified, is also bearing the normal work of an important factor. Clearance values ??do not meet the technical standards will affect the reasonable distribution of load between the rolling element bearing rotation accuracy, vibration value, life will be affected, so to enhance and ensure the bearing clearance pass rate, no doubt important.

Second, the analysis of the radial passing rate of the causal relationship

Product quality in the formation process, once the issue will immediately find the reason. Causal analysis in the form to us for the radial clearance is to the low pass rate for partial parsing.

The five factors affect the quality of bearing clearance. Not to consider the material and environmental factors, the main analysis testing equipment, process methods and the quality of personnel among the quality of the bearing clearance, past bearing, matching of the outer ring and ball method is within the outer channel the diameter of the deviation of instruments sorted, and an inner channel diameter size values ??with an outer channel diameter size values ??calculated according to the standard clearance, and then select the appropriate size of the copper ball, three assembly, with the axis the axial clearance of the upper and lower limits to the clearance tester tests do not meet the technical requirements of the three re-matching. As for the bearing radial clearance values ??with axial clearance values ??to be learned, it is difficult to ensure accuracy. Because the measured value of the axial clearance is only the upper and lower limits, while the channel of the upper and lower limits because of the curvature and every one of the practices vary, so use this method matching the bearing radial passing rate of is unstable. High and low, the rework is more frequent, can not really get the quality of the product clearance.