Specifications
| Name | Rotary Drilling Rig | ||
| Model | GR50 | ||
| Engine | Model | YC4GB85-T22 | |
| Power | Kw/rpm | 61/2200 | |
| Hydraulic System | Main pump Model | K3V63DT | |
| Max pressure | Mpa | 32 | |
| Pressurizing System | Max pressurizing force | KN | 140 |
| Max pulling force | KN | 140 | |
| Pressurizing cylinder stroke | mm (in) | 1500 (59.1) | |
| Power Head | Motor displacement | ml/r | 107*1 |
| Max output torque | Kn.m | 50 | |
| Working speed | rpm | 22 | |
| High speed mud throwing | rpm | 65 | |
| Chassis | Crawler plate width | mm (in) | 500 (19.7) |
| Chassis length | mm (in) | 2800 (110.4) | |
| Traveling speed | m (ft) /h | 3200 (10500) | |
| Traveling motor model | TM18 | ||
| Mast | Left and right inclination | degree | ±5˚ |
| Front inclination | degree | 5˚ | |
| Rear inclination | degree | 90˚ | |
| Main Winch | Motor model | TM22 | |
| Max lifting force | KN | 120 | |
| Wirerope diameter | mm (in) | 20 (0.79) | |
| Wirerope length | m (ft) | 20 (65.6) | |
| Lifting speed | m (ft)/min | 85 (278.8) | |
| Auxiliary Winch | Max lifting force | KN | 15 |
| Wirerope diameter | mm (in) | 12 (0.47) | |
| Wirerope length | m (ft) | 22 (72.2) | |
| Lifting speed | m (ft)/min | 40 (131.2) | |
| Drill Pipe | Locking Pipe | mm (in) | ø273 (10.8) |
| Operating Data | Max drilling depth | m (ft) | 15 (50) |
| Max drilling diameter | m (ft) | 1.0 (3.3) | |
| Transport | Length*Width*Height | m (ft) | 5.5*2.2*2.9 (18.1*7.3*9.6) |
| Weight | kg (lb) | 11500 (25360) | |
| Parameters are subject to change without prior notice. | |||
GR50 Rotary Drilling Rig Features and Advantages:
Gookma rotary drilling rig includes many core technologies, it leads the trend of medium and small piling machine. 1.The machine is of advance design,compact structure, with a beautiful overall looking.
2.With agile mobility, high through ability,it’s very convenient for transportation in city and suburb areas. Small size and smart, specially suitable for working in narrow and low spaces, such as alley, tunnel, subway and indoor places etc. 
3.Adopts famous branded key components, the machine is of stable and reliable, low failure rate, easy and simple in maintenance and repairing. 4.Strong power, big torque, low fuel consumption, excellent performance, high working efficiency. 
5.Widely suitable for all kinds of small construction projects, such as municipal projects and rural construction projects etc. 
6.Professional management team and manufacturing system ensures the product quality and fast delivery of the machine. 7.Reasonable price, good economy, low investment, high return. Return period for investment is short. 
Applications
Gookma rotary drilling rig is widely applied in many holing construction projects, such as highway, railway, irrigation, bridge, power supply, communication, municipal, garden, house, water well construction etc., and has been enjoying high reputation among customers.
Production Line
