GR50 Rotary Drilling Rig

Rotary drilling rig is a holing machinery for foundation construction, it’s the new piling equipment that has been developing the fastest in the last decade, and was praised as the “Green Construction” machinery by the construction industry. Gookma Rotary drilling rig includes 5 models currently, max drilling depth are separately 10m, 15m, 20m, 26m and 32m, max drilling diameter from 1000mm to 1200mm, widely meets various requirements of small and medium piling projects. GR50 rotary drilling rig is a small model newly developed according to market demand for small construction projects in water well drilling and house foundation drilling etc.  . 

Products Details


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
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.
 Agile Mobility  Small Size for Working in Narrow Spaces  For Water Well and House Foundation Drilling  Drilling Depth 15m (50ft) Drilling Diameter 1m (3.3ft) 3 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. 1 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. With9 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. With12 5.Widely suitable for all kinds of small construction projects, such as municipal projects and rural construction projects etc. With11 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. With10


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. With4 With1 With5 With8 With7 With6

Production Line

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Production Video

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