During the timing belt installation process, it is very important that the timing belt be fully seated in the pulley grooves before applying final tension. Serpentine drives with multiple pulleys and drives with large pulleys are particularly vulnerable to timing belt tensioning problems resulting from the timing belt teeth being only partially engaged in the pulleys during installation.

In order to prevent these problems, the timing belt installation tension should be evenly distributed to all timing belt spans by rotating the system by hand. After confirming that timing belt teeth are properly engaged in the pulley grooves, timing belt tension should be rechecked and verified. Failure to do this may result in an under tensioned condition with the potential for timing belt ratcheting.、

We offer a wide selection of standardized mechanical components including 40 D.P. (2.07 mm) Pitch timing belts and pulleys. The timing belts are available off-the-shelf in 9 standard inch and metric widths. Special widths can be cut to size from sleeves available from stock. Aluminum pulleys, molded plastic pulleys with brass inserts and molded plastic pulleys without inserts are offered.

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