Pusher Leg Drills

Medium range

Our water flushed, pusher leg mounted rock drills are designed for driving drifts and tunnels with a small cross section. They are intended for use for hole diameter range of 27 to 41 mm (1-1 5/8 in) with Hex 22 (7/8”) rotation shank as a standard. When used with Atlas Copco tapered button bits, penetration rate will improve some 25-50 percent compared to conventional integral steels. And they have three to five times longer service life


  • All round rock drill suitable for most drilling applications in medium to hard rock
  • With its long stroke, it has a good penetration rate and the quality rifle bar mechanism can handle the load.
  • With the pusher leg control in the back head of the rock drill, they are easy to reach
  • Highly efficient in medium to hard rock
  • Large piston diameter makes it very efficient even at low air pressure
  • Pusher leg control placed in the back head of the rock drill


Description   BBC 16W BBC 34W
Part No   AC-8311040110 AC-8311040805
Weight lbs 63 74
Length in 27-3/4 30-1/2
Air Consumption cfm 146.2 186.46
Impact Rate bpm 2340 2280
Piston Diameter in 2-3/4 3-1/8
Stroke Length in 2-5/32 2-3/4
Largest Reaming Diameter in 2-31/32 2-31/32
Hole Diameter in 1.06-1.61 1.06-1.61
Vibration Level 3 Axes (ISO 28927-10) m/s2 16.6 20.4
Sound Power Level Guarande dB(A) 122 127
Sound Pressure Level dB(A) 111 116
Shank Size in 7/8 x 4-1/4 7/8 x 4-1/4
Compatible Pusher Legs  

BMT 51

ALF 71

ALF 71-1

ALF 71

ALF 71-1

Price   $5,500.00 $6,325.00


Please Note: Atlas Copco will not accept returns on line items of $155.00 or less.