GB/T 7550-2008Synchronizing universal coupling with ball and socket - Test method (English PDF)

3.1 load test

3.1.1

The test shall be made prior to the coupling manufacturer certification, and add MoS2 grease. In coupling allowable speed according to Table 1

Column five kinds axis inclination and time to test positive and negative load test in both directions.

Table 1

Axis tilt/permissible maximum axis tilt /% 0255075100

Time/min

Forward 3010101030

Reverse 3010101030 3.1.2 No-load test coupling should not have abnormal sound, the temperature rise should not exceed 5 °C.

3.2 Synchronization Test

3.2.1

Coupling synchronization refers to the relative error of the instantaneous angular velocity input unit and the output of the angular velocity, namely. input angular velocity omega1, lose

An angular velocity omega2, synchronization error deltaomega, there are.

deltaomega = omega2-omega1omega1 3.2.2 measurement process, the measuring point on the circumference of not less than 180, deltaomega is less than 1/500.

3.3 load test

3.3.1

load test is in the allowable speed, axis angle to the 0 ° axis allowable maximum inclination angle in five. Press nominal torque

T-shaped convert torque T =

K3K4

18K1K2

25% · T-shaped, 50%, 75%, 100% loading four stages. Coefficients K1, K2, K3, K4 press

GB/T 7549-2008 Appendix A OK. Table 2 identifies the test of time. Start recording when the temperature balance.

Table 2 Test time (in minutes)

No. tilt axis/maximum permissible shaft inclination /%

Torque/torque conversion /%

22520306090 […]