When a large quantity of NSK bearings manufacturing, General sample, prototype, documentation blocks and mold adjustment system; in single parts and small batch production, often take advantage of machine tool adjust the scale or the use of gauge blocks. Adjustment of content also varies depending on the complexity of the workpiece, for simple surfaces (such as internal and external cylindrical surfaces), generally adjust the position of the movement, but for complex surfaces (such as helical, involute surfaces), you also need to adjust the relationship between forming speed. Therefore, adjusting the NSK bearing error is caused by a variety of factors.
NSK bearing measurement error, tolerances shall be 10% the following. Exploits the margin of measurement error of 10%~33% in General, as tolerance grade increases, the proportion of error larger or smaller tolerances, higher proportion of errors, and NSK bearing tolerances up to IT5 or more, it is hard to reach 10%. Measurement error does not mean that the test tolerances can relax 10%, but to give some safety margin in order to ensure user acceptance by criteria.
NSK bearings in each part of the process, in order to obtain bearing size, shape and location precision of the machined surface, had to make adjustments to the machine tools, jigs and tools, any adjustments will inevitably bring about a certain degree of error. Machining of bearing parts in production volume and accuracy often requires different adjustment methods used are also different.


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