A TOPRAN 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. LOGAN (LS_)
2. SANDERO
3. LOGAN MCV (KS_)
4. LOGAN EXPRESS (FS_)
5. KANGOO / GRAND KANGOO (KW0/1_)
6. KANGOO (KW0/1_)
7. KANGOO Express (FW0/1_)
8. KANGOO Rapid (FW0/1_)
9. LOGAN I (LS_)
10. TONDAR 90 I (LS_)
11. LOGAN I Estate (KS_)
12. TONDAR 90 I Estate (KS_)
13. LODGY (JS_)
14. LOGAN Pickup (US_)
15. SANDERO/STEPWAY I (BS_)
16. DOKKER MPV (KE_)
17. DOKKER Express Box Body/MPV
18. LOGAN EXPRESS (US_)
19. LOGAN II Estate (K8_)
20. SANDERO/STEPWAY II (B8_)
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.