... , railway bolt wrench, rail bender , rail gap adjuster, cutting disc, grinding stone, and etc .Since its foundation in 1992, has provided ... 2850 r/min (cast iron shell 2870 r/min)2, wafer wheel (shaft) :1) spindle speed of 3060 r/min (3080 r ... 43, cutting time 60 kg/m rail, acuities 120 s4, wafer grinding wheel used times of 50 kg/m or use four 60 ...