Bearing temperature of the motor and pump specifications

A, bearing temperature specification - Pump bearing temperature specification, GB3215-1 82 4. 4. 1 during the pump work, bearing the highest temperature is not exceed 80 ℃, JB/T5294-2 91 3. 2. 9. 2 bearing temperature rise shall not go beyond the environment temperature of 40, the highest temperature shall not exceed 80 ℃, JB/T6439-3 92 4. 3. 3 under rule conditions pump running, built in the bearing place walking surface surface temperature should not be higher than that of medium temperature 20 ℃, the highest temperature is not higher than 80 ℃. Surface mounted bearing place outside surface temperature should not be high temperature 40 ℃. The highest temperature is not higher than 80 ℃, JB/T7255-4 94 5. 15. The use of three bearing temperature. Bearing temperature rise shall not go beyond the environment temperature 35 ℃, the highest temperature shall not exceed 75 ℃, JB/T7743 5-95-7. 16. 4 bearing temperature rise shall not go beyond the environment temperature 40 ℃, the highest temperature shall not exceed 80 ℃ 6, JB/T8644-1997-4. 14 bearing temperature rise shall not go beyond the environment temperature 35 ℃, the highest temperature shall not exceed 80 ℃, temperature of motor bearing rules, presents the causes of abnormal and disposal procedures, rolling bearing does not exceed 95 ℃, the highest temperature sliding bearing the highest temperature does not exceed 80 ℃. And are no more than 55 ℃ temperature ( Temperature rise of bearing temperature minus the test ambient temperature) ； ( 1) Reason: the shaft bending, the centerline is not allowed. Disposal; To find center. ( 2) Reason: the roots go screw loose. Disposal: tighten the foundation screw. ( 3) Reason: smooth oil shall be unclean. Disposal: smooth oil change. ( 4) Reason: smooth oil use time is too long, not to change. Disposal: bearing to clean, smooth change oil. ( 5) Reason: in the ball or roller bearing damage. Disposal: a change in the new bearing. Country in accordance with the specification, F class insulation class B examination, motor temperature control at 80 k ( Resistance method) 90 k ( Element method) 。 Thinking to the status of the environmental temperature 40 ℃, motor operates the highest temperature cannot exceed 120/130 ℃. The maximum permissible bearing temperature 95 degrees. Measurement on the surface of the bearing chamber surface temperature with infrared detection gun, experience, 4 pole motor can not exceed 70 ℃ high temperature. About motor ontology, without monitoring. After completion of motor manufacturing, general situation, his temperature is basically fixed, not with the motor running attack mutations or growing from time to time. Detection and bearing is wearing parts, demand.