... transimission efficiency long service life low noise ZDY Single-Stage Cylindrical Gearbox, Bevel Gear ReducerZDY series cylindrical gear ... High in transmission efficiency: single stage, more than 96.5%; double-stage, more than 93%; three-stage, more 90%; Smooth ... life, high bearing capacity; Easy to disassemble, inspect and assemble.Single-stage: ZDY80, ZDY100, ZDY125, ZDY160, ZDY200, ZDY250, ZDY280, ...