| 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 | 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 | Restructuring big arm |
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