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. PERSONA 400 Hatchback (C9_C, C9_S)
2. WIRA Hatchback (C9_C, C9_S)
3. PERSONA 400 (C9_S)
4. PERSONA Saloon (C9_S)
5. WIRA (C9_S)
6. PERSONA 300 (C9_M)
7. PERSONA (C9_M)
8. SATRIA (C9_M)
9. COLT V (CJ_, CP_)
10. MIRAGE V (CJ_, CP_)
11. COLT Mk V (CJ_, CP_)
12. LANCER VI (CJ_, CP_)
13. LANCER VI Saloon (CJ_, CP_)
14. LANCER Mk VI (CJ_, CP_)
15. SPACE STAR MPV (DG_A)
16. LANCER VII (CS_A, CT_A)
17. LANCER VII (CS_A, CG, CH, CJ, CT_A)
18. CEDIA VII (CS_A, CT_A)
19. LANCER VII Estate (CS_W, CT_W)
20. LANCER VII Estate (CS_W, CT_W, CH)
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.