A FEBI BILSTEIN brand Tensioner Pulley, timing belt is a part of the timing belt drive, which serves to bypass the belt in a certain place or several places and is a freely rotating pulley of small diameter.

The composition of the roller is small: it is the roller mount, the internal rolling bearing with a protective oil seal, and the working body of the roller itself, which is in contact with the belt.

1. J5 Bus (280P)
2. J5 Bus (290P)
3. PANDA (141_)
4. PANDA Hatchback Van (141_)
5. DEDRA (835_)
6. DELTA II (836_)
7. DELTA Mk II (836_)
8. TEMPRA (159_)
9. TEMPRA S.W. (159_)
10. TEMPRA SW (159_)
11. PUNTO (176_)
12. PUNTO Convertible (176_)
13. CINQUECENTO (170_)
14. DEDRA SW (835_)
15. Y10 (156_)
16. Y (840_)
17. SCUDO Bus (220_)
18. C25 Bus (280_, 290_)
19. J5 Platform/Chassis (290L)
20. J5 Van (290L)
21. See more in applications

The principles of the timing belt tensioner work

Excessive tension leads to intensive wear of the timing parts - pulley bearings (water pump, generator, tensioner, etc.), the belt itself, and others. In addition, a tight belt stretches faster and shortens its service life. Too little preload is fraught with more serious problems - slipping of the belt along the toothed pulleys of the camshafts, which leads to a violation of the valve timing and deterioration of the entire engine.

Therefore, a tensioning device is introduced into the timing drive in the form of rollers of one design or another, which, during engine operation, maintain an optimal belt tension.