Manufacturer of Mining & Construction Equipments
jack leg rock drills

MJ290 Jackleg Drill

MJ290 is a pusher leg mounted pneumatic jackleg drill which has can be used in a variety of drilling applications in general and small cross sectional drilling of tunnels and drifting in specific. It is mainly used for drilling medium to hard rocks. This pneumatic pusher leg drill has one of the largest in-class piston diameters which leads to long life of the drill. Apart from that, it also has a long stroke length and robust rifle bar rotation mechanism yielding high penetration rates. The pusher leg controls are conveniently placed on the drill backhead, increasing operator control and comfort.


Key Features of MJ290 Jack leg Rock Drills:


• Versatile design specially made for driving drifts and tunnels of small cross section
• Great for drilling through medium to hard rocks
• Large piston diameter for prolonged drill life
• High penetration rates provided by long stroke length and robust rife bar mechanism
• Pusher leg controls placed on drill backhead for operator control and convenience.




Metric Imperial
Length 710 mm 28”
Weight 28.5 kg 63 lb
Bore Diameter 27 mm – 41 mm 1” – 1 5⁄8”
Stroke Length 55 mm 2 1⁄8”
Impact Rate 2340 BPM
Air Consumption 69 l/s 146 cfm
Piston Diameter 70 mm 2 3⁄4”
Steel Size (HEX) – Chuck End 22 mm X108 mm 7/8” X 4 1⁄4”




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