J&T

Vacuum pump motor and the bearing temperature standard _

by:J&T     2020-05-29

considering the environment temperature of 40 ° C, the highest temperature should not exceed 120/130 of vacuum pump motor ° C. Vacuum pump bearing temperature up to 95 degrees.

a, standard - vacuum pump bearing temperature vacuum pump bearing temperature standard

1. GB3215 4. 4. 1 in during the running of pump, vacuum pump bearing does not exceed the highest temperature of 80 ° C

2. JB / T5294 3。 2. 9. 2 vacuum pump bearing temperature rise shall not exceed the environment temperature 40 ℃, the highest temperature should not exceed 80 ℃.

3。 JB / T6439 4。 3. 3 when the pump under the working conditions prescribed by the runtime, built-in vacuum pump bearing external surface temperature should not be higher than that of the medium temperature 20 ℃, and the highest temperature is not higher than 80 ° C. The surface temperature rise of external bearing installation shall not be higher than the environment temperature of 40 ° C. The highest temperature is not higher than 80 ° C

4. JB / T7255 5。 15. 3 the bearing temperature. Vacuum pump bearing temperature rise shall not exceed the ambient temperature 35 ° C, the highest temperature should not exceed 75 ° C.

5,JB / T7743 7. 16. 4 bearing temperature rise shall not exceed 40 ° C temperature, the highest temperature should not exceed 80 ° C

6, JB/T8644 4. 14 bearing temperature rise shall not exceed 35 ° C temperature, the highest temperature should not exceed 80 ° C

2. Vacuum pump vacuum water pump motor bearing temperature adjustment, the cause of the anomalies and processing

regulations scroll vacuum pump bearing the highest temperature not to exceed 95 ° C, the highest temperature of sliding bearing does not exceed 80 ° C. Temperature rise shall not exceed 55 ° C ( Temperature rise is bearing temperature minus the test when the environment temperature) ;

( 1) Reason: the shaft bending, does not allow the centerline. Processing; To find the center again.

( 2) Reason: basic screw loose. Processing: tighten the anchor bolts.

( 3) Reason: lubricating oil is not clean. Processing: replace the lubricant.

( 4) Reason: lubricating oil has been used for a long time without replacement. Processing: clean vacuum pump bearings and replace lubricant.

( 5) Reason: the vacuum pump of ball or roller bearing damage.

disposal: replace vacuum pump bearings. According to the national standard, class F insulation class B qualification, vacuum pump motor temperature control at 80 k ( Resistance method) 90 k ( Element method) 。 Considering the environment temperature of 40 ° C, the highest temperature should not exceed 120/130 of vacuum pump motor ° C. Vacuum pump bearing temperature up to 95 degrees. Vacuum pump bearing surface of the outdoor temperature measured by infrared detection gun. According to experience, 4 pole vacuum pump motor of the highest temperature should not exceed 70 ° C. For the vacuum pump motor main body, don't need to monitor. After manufacturing vacuum pump motor, under normal circumstances, the temperature rise of basic fixed, and with the operation of vacuum pump motor will not change or add. , vacuum water pump bearing is consumed parts need to be tested.


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