Quality Transmission Components is the exclusive distributor of Zetasassi Belt and Chain Tensioners in the US, Canada and Mexico. These well-made tensioners will improve the operation of belt and chain drives by many hours by keeping the tension constant. This occurs because the tensioners create a: 

1. Reduction of noise.

2. Uniform and more efficient transmission of drive torque

3. Decrease in wear.

4. Increased life of belts and chains.

All tensioners should be installed on the slack side of belts and chains. For rotational movement units, please make sure to install the units, as shown below.

It is also recommended, for both rotational and linear tensioners, that the tension force be applied from the outside of the belt or chain loop as to not reduce the wrap-around angles of the belt or chain over the pulleys or sprockets.

As shown in the pictorial index on page 4, several designs of tensioners are offered as arm only, arm with roller attached for belts, arm with sprocket attached for chains, or arm with polyethylene sliding head for chains.

Further variations are offered, as well as replacement heads, as shown in the pictorial index on page 5.

Most chain tensioners are also offered with ASA or ISO single, double and triple chain heads. Availability of heads other than for single chain is given on each product page.