Tension gears are solutions that are readily used in machines, all kinds of devices and vehicles due to their advantages - low weight, small size, quiet operation and good durability. However, in the case of structures using drive belts, appropriate operation will be necessary for their efficient operation pulleys - driven and passive. Let's find out what their types are and see what to consider when choosing them.
Pulleys for flat belts
In the case of flat belts, the pulleys operate by frictional engagement between the circumferential surface of the pulley and the inside of the belt. The most important parameters of this type of wheels will be theirs diameter and width. It will also be important profile - in many cases, the surface of the wheel changes its geometry and its central part has a slightly larger circumference than at the edges, which prevents the belt from slipping. The diameter of the shaft used to seat the wheel will also be important.
Pulleys for V-belts
Pulleys designed for use with V-belts must have the correct groove geometry. It will count profile type - SPZ, SPA, SPB or SPC. It is also possible to measure the geometry of the wheel being replaced - the pitch diameter of the wheel, and the angle of the groove profile. You will also need to determine the width of the rim, the height of the groove above the split line, and the depth of the groove. Equally important will be the application whether the circle is to cooperate with single or multi-ribbed belt. The parameters related to the diameter and width of the wheel and the method of its mounting will also be of key importance.
Pulleys for toothed belts
The most important point in this case is the definition shape and number of teeth and their graduations - inch for teeth MXL, XL, L, H or HX or metric for teeth AT, T and HDT. The width of the belt will also be important. The material from which the wheel is to be made is also of great importance - apart from steel, aluminum, plastic and cast iron are used. In addition to the width of the wheel and diameter, and the dimensions of the shaft, presence will count edge shields.