Purchase original bearing detection is like this, do you know?

Bearing vibration value is normal bearing is an important parameter of the regulated, talk about the bearing vibration test method for today. 1 type, speed of bearing vibration measurement instrument of test method will be measured on the spindle bearing device, make its end face close to the shoulder, the cylindrical roller bearing, should be made inside and outside the circle of two end face adhere to in the same plane. Deep groove ball bearing should stop is on the back of the test, respectively. Contact Angle and taper roller bearings, according to the tested for axial load in the direction of the device. NJ model cylindrical roller bearing inner ring guard end face is close to the shoulder device testing. NF model cylindrical roller bearing outer ring guard is facing out test. N and NU type cylindrical roller bearings will datum device in the direction of the spindle shaft shoulder, in the process of testing shall ensure that ring does not produce axial displacement. Impose rules on the bearing outer ring axial or radial load, the outer ring will be in half width measuring point. After starting the spindle, the indicating instrument is in a stable reading three frequencies of vibration value, respectively, for each measuring point vibration velocity signal measurement time is not less than zero. 5S。 Type 2, acceleration of bearing vibration measurement instrument device to see 1 test method, under the condition of the rules of the test, the bearing running for a period of time in order to obtain stable bearing vibration state, corresponding to each measurement position of bearing vibration value in some condition. Single measurement, the uniform of the values measured at three bearing test value for this set of bearing vibration acceleration level. Measured bearing single two-sided measurement when taking three uniform measurement value is used as the set of bearing vibration acceleration level. Take the set of each measurement point bearing the maximum vibration acceleration peak value as the set of bearing vibration acceleration peak value. To maximize the bearing of each measurement point crest factor as the acceleration wave crest factor of the bearing. Summary, the center of the bearing is extremely delicate and parts, must be in accordance with the parameters used.