2.Feed speed can be set to keep the end from being grinded over.High work efficiency.Servo motor and ball screw feed .Bar material installed easily.Bar material w.D is |¦ì10, a|¦ì70mm&o.D is |¦ì80, a|¦ì500mm&spring length is 1100mm .Max grinding wheel size is |¦ì900mm¡ê¡§36``¡ê, and can be custom-designed . 2 pieces heavy duty springs like locomotive cylindrical spiral spring , ¡é bolster springs or 4 pieces small springs like car springs or leaf springs are available at the same time. 3.It can cast v-shaped grinding machine guide rail.Grinding accuracy is high and its working condition is cleaner and more environmental than the traditional machine`s through cooling water circulation use and filtration with iron fillings. …