Manufacturer of Mining & Construction Equipments
MJ250 rock drill

MJ250 Jackleg Drill

The MJ250 Jackleg Drill enables miners to drill in confined spaces at challenging orientations while delivering high penetration rate and strong torque even on low air pressure. This boosts the productivity and increases the life of the drill while also providing safety to the operator.The jackleg has an operating controller which is able to retract the pusher leg.

The pusher leg has large surface areas of contact between major cylinder components reduce impact pressure thus increasing product life while giving consistently powerful results. The pusher leg also comes with an option of a stainless steel piston rod to prevent corrosion and pitting and enhance the life of the pusher leg. They also come with a locking retainer for collared steel standard.

Key Features:
• High penetration rate
• Convenient operating controls
• Long life
• Comes with a locking retainer
• Market leader in North & South American continents
• Parts Interchangeable with Boart Longyear S250

• Muffled version available
• Chuck sizes – 22 mm X 108 mm (7/8”X4¼”) & 25 mm X 108 mm (1”X4¼”)


Metric Imperial
Weight 36 kg 79 lb
Bore Diameter 80 mm 3 1⁄8”
Stroke Length 73 mm 2 7⁄8”
Impact Rate 2200 BPM
Air Consumption 73 l/s 155 cfm
Air Supply Hose ID 25 mm 1”
Water Supply Hose ID 13 mm 1⁄2”
Ordering Part Numbers:
22 mm X 108 mm (7/8”X41⁄4”) 5111 130 000 22
25 mm X 108 mm (1”X41⁄4”) 5111 130 000 25
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