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KG920A/B/D, KGH4

Medium Pressure Crawler Drilling Rig

The KG920A/B/D, KGH4 medium pressure crawler drilling rig is an updated version of KY125 series rock drilling machine. The pneumatic system, hydraulic system, drill arm components, walking parts are all optimized and upgraded. Thus the machine has stronger gradeability, and the steepest slope could be in 30°. Besides, the rotating speed could be from 0r/min to 107r/min.

A detailed comparison between the KG920A/B/D, KGH4 and KY125 drilling machinery has been made in the form below. You can see the advantages of our KG920A/B/D, KGH4 medium pressure crawler drilling rig clearly. If you are interested in it, just contact us at any time.

Advantages of KG920A/B/D, KGH4 over KY125(D)

KG920A/B/D, KGH4 KY125(D) Advantage
Walking parts Motor and reducer Ball piston motor (direct connecting) Less pressure and longer service life for the motor
Walking pressure 11Mpa 14-16Mpa
Drill arm New type drill arm
Drilling horizontal and vertical holes at the same time, low height of the horizontal hole
Pneumatic systems Live type impacting air valve Ball valve Easier control
Rotation speed 83r/min (diesel engine 1700r/min) 107_n (diesel engine 2200r/min) 55r/min 50% higher rotation speed
Hydraulic system 30 pumps, large new type valve group, new type flow divider, new type connector 16 pumps Higher flow, lower resistance, and better appearance
Feeding speed 450mm/s 336mm/s 40% higher feeding speed

Based on our previous product KG925 borehole drilling machine, we developed this KGH4 medium pressure eco-friendly crawler drilling rig. The new product comes with a dry type dust collector, and the drill bit diameter ranges from 80mm to 115mm. This crawler drill rig can drill blastholes (such as pre-splitting blasting hole) and anchor cable holes in horizontal, vertical and inclined directions. The attractive features of this blasthole driller like stable performance, wide application, high cost-effectiveness, makes our KGH4 medium pressure eco-friendly crawler drilling rig an ideal choice for medium and small mines.

1.    The imported high-speed motor is used for the dust collecting system. The system is stable and efficient.
2.    The guide rail is lengthened, and the first drill rod of the crawler drilling rig is 3m long.
3.    Special treatment has been conducted on the walking system, making the system strong and durable.
4.    The ultra-high rotating speed can reach 140r/min, making the drilling speed greatly accelerated.


Model KG920A KG920B KG920D KGH4
Rock hardness F=6-20
Hole diameter Ф80-115mm
Economic drill depth 25m
Pressure 1.0-1.7Mpa
Air consumption 9-13m³/Min
Rotating speed 0-107r/Min
Rotation torque 1400N.m
Lifting capacity 15000N 25000N
Propulsion type Hydro-Cylinder-Chain
Push length 3000mm
Grade ability 30°
Ground clearance 290mm
Walking speed 0-1.8km/h
Carriage rising angle Blow 135, Elevation 5, Total 145
Carriage swing angle Left 100, Right 45, Total 145
Drill boom pitch angle Blow 50, Elevation 25, Total 75
Drill boom pitch swing angle Left 44, Right 45, Total 89
Carriage compensation 900mm
Drill rod Φ64/Φ76*3000mm
Diesel engine YC2108 YC4D80 Electric motor YC4D80
Power 33KW 2200r/Min 58KW 2400r/min 30KW 58KW
Overall dimension (L*W*H) 4400×2200×2050 (mm) 5600×2700×2500 (mm)
Total weight 4000kg 4200kg 4000kg 5000kg
Note: KGH4 is advanced type of KG920 which equipped with dust collector

Recommend spare parts for KG920A medium pressure crawler drilling rig

Drill bit diameter 90mm
Drill rod (Diameter × L) Φ76×2000mm
Drill hammer 90

Recommend spare parts for KG920A medium pressure crawler drilling rig

Drill bit diameter 90mm 105mm 115mm
Drill rod (Diameter × L) Φ64×3000mm Φ64×3000mm Φ76×3000mm
Drill hammer CW930 HD45S HD45A

Recommend parts for the KGH3 crawler drilling rig
Drill bit: Φ90, Drill hammer: QCW930, Drill rod: Φ64mm
Drill bitΦ105, Drill hammer: HD45S, Drill rod: Φ64mm
Drill bit: Φ115, Drill hammer: HD45A, Drill rod: Φ76mm

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