1. Different application positions: the turnout grinding car mainly carries out preventive and restorative grinding on the main rail and rail top surface inside and outside the turnout; Ordinary grinding car grinds rail contour and fat edge.
2. Different functions: the turnout grinding car can improve the stability of train operation, eliminate rail diseases, improve the wheel-rail relationship and prolong the service life of rails; Ordinary grinding cars can improve the running stability of trains.