H, Xh, L, XL, Htd, Std Metric Timing Belt Idler Pulleys

The pulley find wide application in automobile, textile, chemical fiber, paper-making, printing machines, sewing machine, office equipment telecommunication, tobacco, food machinery, steel machinery, metallurgy, petrochemical works,instrument, meters and various precision machine tools.
 

1. Switch off the power, remove the protective cap. loosen the assembly, move the motor to make the belt loose, you can take off the belt without wrenching it up.
2. Take off the old bel, and then check if there is any abnormal wear and tear. Excessive wear and tear may indicate there are some problems with the design or maintenance of the gearing.
3. Choose the proper belt.
4. Clean the belt and the pulley using a cloth with some liquid which can't volatilize easily. It is not proper to soak it in the cleaning formulation or brush it with cleaning formulation or use the sand paper or sharp subject to scratch. The belt must be kept in dry condition
5. Check the pulley if there is any abnormal wear and tear or crack, if the wear and tear is excessive, the pulley must be changed.
6. Check the pulley to see if it is in symmetrical straight line, which is very important for the performance of the transmission, especially for the timing belt gearing.
7. Check the rest parts of the gearing,for example, the symmetry of the bearing and the bearing boot, durability and lubrication, etc
8. When installing a new belt on the pulley, it is forbidden to wrench or use too much force.
9. Adjust and tighten the central distance of the gearing,until the tension is proper measured by the tension gauge.Use hand to rotate the driving pulley for several rounds and measures the tension again.
10. Tighten the assembly bolt of the motor,correct the torque,because nay change of the central distance well cause the bad property of the belt. Make sure all the gearings are tightened.
11. Switch the gearing on and observe the property of the belt if there is any unuaual vibration, listen carefully to see if there are any unusual noises. You'd better turn off the machine, then check the condition of bearing and motor if the temperature is very high, may be because the belt is too tight or bearing is not symmetrical,or the lubrication is not correct.