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ZJ40/XJ2250 truck-mounted drilling rig is special equipment for oil mines, with hook load of 2250KN, derrick height of 38m, workover depth of 9000m 2 7/8 drill pipe nominal overhaul depth of 7500m(3-1/2 drill pipe). Drilling depth 4000((4 1/2 ").

The power of ZJ40 land drilling rig adopts the linkage form of 3 or 4 machines driven by diesel engine + hydraulic torque converter or coupling positive carriage; the winch drum is slotted; the main brake adopts hydraulic disc brake, and the auxiliary brake adopts electromagnetic eddy current brake;

The power of ZJ50 land drilling rig adopts the 3-machine or 4-machine linkage form of diesel engine + hydraulic torque converter or coupling positive carriage transmission; the winch drum is slotted; the main brake adopts hydraulic disc brake, and the auxiliary brake adopts electromagnetic eddy current brake;

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