The V-belt tensioning device should generally be installed on the inner side of the loose edge, so that the belt can only be subjected to unidirectional bending to reduce life loss; At the same time, the tensioning wheel should also be as close as possible to the large pulley to reduce the impact on the wrap angle. When the axis of any pulley in the V-belt drive cannot move, the length of the V-belt used should be able to be loaded and unloaded between the pulleys in a fixed position. After installation, the tensioning wheel can be used to tension it to the operating state. The tensioning wheel should be able to adjust within the range of tension adjustment, including the adjustment of V-belt elongation after use.

The effective width system stipulates that the outermost width of the edges on both sides of the wheel groove is the effective width. This dimension is not affected by tolerances, and the diameter at the effective width of the wheel groove is the effective diameter. Due to differences in size systems, the length of the tape is represented by the reference length and the effective length, respectively. The reference length is the circumference of the V-belt located at the reference diameter of the measuring pulley under the specified tension force; The effective length is the circumference located at the point where the effective diameter of the measuring pulley is measured under the specified tension.