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. 127 (127_)
2. RITMO (138_)
3. STRADA (138_)
4. Y10 (156_)
5. FIORINO (127_)
6. FIORINO (147_)
7. PENNY Estate Van (257_)
8. FIORINO Box Body/MPV (146_)
9. 127 Panorama (127_)
10. DUNA (146_)
11. PREMIO (146_)
12. DUNA Weekend (146_)
13. PREMIO Weekend (146_)
14. PREMIO / ELBA Weekend (146_)
15. FIORINO Pick up (147_)
16. FIORINO Pick up (146_)
17. ELBA (146_)
18. ELBA CSL (146_)
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.