A INA 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. COLT II (C1_A)
2. COLT II (C1_A, RB, RC)
3. COLT Mk II (C1_A)
4. LANCER I (A7_)
5. LANCER I Saloon (A7_)
6. LANCER II (A17_)
7. LANCER II Saloon (A17_)
8. LANCER � (A17_)
9. TREDIA (A21_)
10. LANCER CELESTE Coupe (A7_)
11. GALANT I (A12_)
12. GALANT I Saloon (A12_)
13. GALANT � (A12_)
14. GALANT II (A16_)
15. GALANT II Saloon (A16_)
16. GALANT Mk II (A16_)
17. GALANT II Station Wagon (A16_V)
18. GALANT II Break (A16_V)
19. GALANT Mk II Station Wagon (A16_V)
20. GALANT I Station Wagon (A12_V)
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.