A OPTIMAL 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. OMEGA B (V94)
2. OMEGA B Estate (V94)
3. 900 II
4. 900 II Convertible
5. 9000
6. 9000 Hatchback
7. VECTRA B Hatchback (J96)
8. VECTRA B (J96)
9. VECTRA B Estate (J96)
10. 900 II Coupe
11. OMEGA (B) Saloon (V94)
12. OMEGA (B) Estate (V94)
13. 9-5 (YS3E)
14. 9-5 Saloon (YS3E)
15. VECTRA (B) Saloon (J96)
16. VECTRA (B) Hatchback (J96)
17. VECTRA (B) Estate (J96)
18. 9-5 Estate (YS3E)
19. 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.