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. SANTA FE I (SM)
2. SONATA IV (EF)
3. SONATA IV Saloon (EF)
4. SONATA Mk III (EF)
5. SONICA IV (EF)
6. GRANDEUR (HG)
7. AZERA (HG)
8. GRANDEUR V (HG)
9. XG (XG)
10. GRANDEUR Saloon (XG)
11. GRANDEUR (XG)
12. GRANDEUR III (XG)
13. HIGHWAY VAN
14. TRAJET (FO)
15. MAGENTIS (GD, MS)
16. OPTIMA Saloon (GD, MS)
17. OPTIMA / MAGENTIS (GD, MS)
18. OPTIMA (GD, MS)
19. OPTIMA / REGAL (GD, MS)
20. COUPE (GK)
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.