A SKF 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. CAMRY (_V1_)
2. CAMRY Saloon (_V1_)
3. SCEPTER (_V1_)
4. CAMRY Estate (_V1_)
5. SCEPTER Estate (_V1_)
6. ES (VCV10_, VZV21_)
7. ES Saloon (VCV10_, VZV21_)
8. CAMRY (_V2_)
9. CAMRY Saloon (_V2_)
10. RX (MCU15)
11. RX SUV (MCU15)
12. ES (MCV_, VZV_)
13. ES Saloon (MCV_, VZV_)
14. HIGHLANDER / KLUGER (_U2_)
15. KLUGER (_U2_)
16. HARRIER (_U1_)
17. SIENNA (_L1_)
18. AVALON Saloon (_X2_)
19. PRONARD Saloon (_X2_)
20. AVALON Saloon (_X1_)
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.