According to actual tensile force and the confirm belt tensile force list, which made by these Synchronous belt manufacturer, to confirm the relevant manufacturing width of synchronous belt, for example, with the bigger and bigger synchronous belt width, its final tensile force would become larger and larger at the same time.

　　Except of total teeth number of synchronous belt,Synchronous belt manufacturer said the diameter of the center hole of synchronous belt wheel is very important too, for example, according to the confirm manufacturing diameter of synchronous belt wheel axle, which needed installed on the transmission equipment to confirm the final suitable diameter of synchronous belt center hole.

　　If the synchronous belt part had to connect with engine motor part or used as the driven force resource, so the total needed transmission driven force must be as larger as better, so Synchronous belt manufacturer suggests make a key groove on the center hole part of synchronous belt wheel, which can help to prevent the slipping phenomenon between the synchronous belt wheel and needed installation axle, and the dimension of key groove must be confirmed on the actual transmission equipment.