DT Product Portrait 12.2011

The DT® brand offers a complete range with more than 22,000 different spare parts for trucks, trailers and buses, including all standard belt tensioners, as well as a complete range of tension rollers, V-belts and multiribbed belts.

The DT® brand products, made of high quality materials, meet your highest quality requirements and guarantee a long period of use.

Belt tensioners are used to maintain the optimal tension of the V-belt or multiribbed belt, as well as to dampen belt vibration in the belt drive resulting from load variations on the engine or on an auxiliary unit.

DT®-Technic Info:

We distinguish between mechanically and hydraulically damped belt tensioning units.

Today, automatic belt tensioners usually replace the formally used, manually adjusted tensioning units. After installation, they independently maintain the belt at a defined tension.

Automatic tensioning units are equipped with an additional mechanical damping. This guarantees a quiet belt run.

The integrated spring assembly in the automatic belt tensioners ensures optimal belt tension. Jumping-off of the belt is thus avoided.

The belt tensioning units are designed for precise belt running, so that operating noise and wear on the belt is kept to a minimum.

Only maintenance-free bearings from well-known OEM manufacturers are used in DT® brand belt tensioners. In the case of plastic tensioners, these always have a glass-fibre content against premature wear, thus avoiding costly downtime between replacement intervals.

360° Picture

Construction of mechanically damped belt tensioning units using the example of DT No. 5.41435:

1. Bolts
2. Dust cap
3. Tensioner with maintenance-free bearings
4. Cover
5. Damper unit
6. Retaining arm
7. Spring bushing
8. Mainspring
9. Spring band
10. Bushing
11. Axle tube
12. Spring housing

Recommended replacement intervals for V-belts and multiribbed belts:

For security reasons, we also recommend checking or replacement of all belt pretensioners to change.