Cut-out diameter (mm/inch) 444.5(17-1/2)

J40 land drilling rig adopts 3-unit or 4-unit linkage via transmission of diesel engine + hydraulic torque converter or coupler ahead speed reducer; the winch drum is grooved;

XJ550 (100 tons) workover rig is specially used for drilling and workover operation in oilfields.

XJ450 (80 tons) workover rig is specially used for drilling and workover operation in oilfields.