... 40CrNiMoA Dia: 1860mm Modulus: 24 Weight: 2300kg we manufacture spur gear ringthe material can be: AISI4140, AISI1025, 1035, 1045. ... ectDia: 200-8000mmModulus: 10-50Weight: 50kg-20000kgAll kinds of gear ring used on ball mill, sugar mill, rotary kiln ... bearing, special bearings, gear, large gear, sprocket, tire, hollow shaft and many other heat treatment products. Big Gear Ring Used For Gearbox