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Rotary Drilling Rig Model | KR40A | KR50A | ||||
Excavator Size | 8t-13t | 14t-16t | 20t-23t | 24t+ | ||
Max. torque | 32-42 kN.m | 50 kN.m | 50 kN.m | 50 kN.m | ||
Max. drilling diameter | 1200 mm | 1200 mm | 1200 mm | 1200 mm | ||
Max. drilling depth | 12 m | 16 m | 20 m | 24 m | ||
Max. cylinder thrust | 70 kN | 70 kN | 75 kN | 75 kN | ||
Max. cylinder trip | 600/900 mm | 1100 mm | 1100 mm | 1100 mm | ||
Main winch pull force | 45 kN | 65 kN | 65 kN | 65 kN | ||
Main winch speed | 30 m/min | 48 m/min | 48 m/min | 48 m/min | ||
Mast inclination(Lateral) | ±6° | ±6° | ±6° | ±6° | ||
Mast inclination(Forward) | -30°~+60° | -30°~ +90° | -30°~ +90° | -30°~ +90° | ||
Working speed | 7-40rpm | 7-40rpm | 7-40rpm | 7-40rpm | ||
Min. radius of gyration | 2750mm | 2800mm | 2950mm | 5360mm | ||
Max. pilot pressure | 31.5Mpa | 31.5Mpa | 31.5Mpa | 31.5Mpa | ||
Operating height | 7181mm | 8868mm | 9926mm | 11421mm | ||
Operating width | 2300mm | 2600mm | 2800mm | 3300mm | ||
Transport height | 3014mm | 2731mm | 3150mm | 3311mm | ||
Transport width | 2300mm | 2600mm | 2800mm | 3300mm | ||
Transport length | 7157mm | 10390mm | 11492mm | 12825mm | ||
Transport weight | 5.4t | 6.1t | 6.5t | 7t | ||
Remark | Restructuring big arm | Restructuring big arm | Restructuring big arm | Original arm | ||


























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