NSK imported bearing measurement specifications and error rules

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NSK imported bearing measurement specifications and error rules

Source: Bearing network time: 2017-12-16
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1. The rule of the scale benchmark is to measure the NSK imported bearing scale public service by using the comparison measurement method; the ruled quantity block or the specification piece is used as the scale reference for the comparison measurement; the gauge block is necessary to conform to the rules of the standard JB/T1078 "quantity block"; It is necessary for the specification to conform to the rules of the competent authority of the manufacturer.
2. The appearance of the measurement of the external appearance of the measurement is necessary to pass the calibration; and has the accuracy and amplification ratio compatible with the measured NSK imported bearings.
3. The rules for measuring the area are measured on the inner or outer diameter of the NSK imported bearings; the domestic rules are measured within the area where the south end of the ferrule is a maximum chamfering coordinate; while the foreign rules are twice at the ends of the ferrule. Measure within the area of ​​the chamfer coordinates.
4. The permissible measurement error can in principle allow the measurement error to be less than 10% of the public service.
5. The radius of the probe and the pressure of the gauge are used to reduce the measurement error; it is necessary to be within the range of energy; the pressure of the gauge is measured - the force is measured; and the radius of curvature of the probe is increased.
When measuring the inner diameter and outer diameter of NSK imported bearings; the measuring force and the radius of curvature of the probe can be selected.
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