The wheels are mainly used for grinding a full variety of crankshafts and camshafts of vehicles such as automobiles, track, tractor, plane, vehicles. A majority of crank-shaft grinding wheels are straight, a part of shape codes are 5 and 7.It include camshaft. Hardness of the wheels are unifprm  and balance performance of the wheels are higher than that of China State Standard. Dimensional accuracy of the wheels is high and the thickness deviation of a group of the wheels is not more than 0.5mm.The parallel tolerance of two ends is not more than 0.2mm.