gearbox spur gear ring material: AISI4140, 34CrNiMo6, 40CrNiMoA Dia: 1860mm Modulus: 24 Weight: 2300kg ... ectDia: 200-8000mmModulus: 10-50Weight: 50kg-20000kgAll kinds of gear ring used on ball mill, sugar mill, rotary kiln and gearbox ... , sprocket, tire, hollow shaft and many other heat treatment products. Big Gear Ring Used For Gearbox