A SWAG 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. PANDA (169_)
2. PANDA / PANDA CLASSIC (169_)
3. GRANDE PUNTO (199_)
4. PUNTO (199_)
5. YPSILON (843_)
6. Y (840_)
7. MUSA (350_)
8. IDEA (350_)
9. SIENA (178_, 172_)
10. ALBEA (178_, 172_)
11. PETRA (178_, 172_)
12. PALIO / ALBEA Saloon (178_, 172_)
13. PALIO (178_)
14. STRADA Pickup (178_)
15. PALIO Weekend (178_, 173_, 373_, 374_)
16. WEEKEND Weekend (178_, 173_, 373_, 374_)
17. PALIO WEEKEND / WEEKEND Weekend (178_, 173_, 373_, 374_)
18. PALIO WEEKEND Weekend (178_, 173_, 373_, 374_)
19. YPSILON (312_)
20. MITO (955_)
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.