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


BBC 16W	BBC 34W	BBC 34 WTH	BBD 94W	RH 656 4W
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	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	High quality, designed for production drilling Built-in water flushing	High quality, designed for production drilling Built-in water flushing

SPECIFICATIONS

Description		BBC 16W	BBC 34W	BBC 34WTH	BBD 94W	RH 656 4W
Part No		AC-8311040110	AC-8311040805	AC-8311040810	AC-8311020609	AC-8311030202
Weight	lbs	63	74	74	62	48½
Length	in	27-3/4	30-1/2	30½	26½	24
Air Consumption	cfm	146.2	186.46	186.46	205.5	101.7
Impact Rate	bpm	2340	2280	2280	3300	2040
Piston Diameter	in	2-3/4	3-1/8	3 1/8	3½	2½
Stroke Length	in	2-5/32	2-3/4	2¾	1¾	2
Largest Reaming Diameter	in	2-31/32	2-31/32	2 31/23
Hole Diameter	in	1.06-1.61	1.06-1.61	1.06-1.61
Vibration Level 3 Axes (ISO 28927-10)	m/s2	16.6	20.4	20.4	15	21.2
Sound Power Level Guarantee	dB(A)	122	127	127	125	120
Sound Pressure Level	dB(A)	111	116	116	114	115
Shank Size	in	7/8 x 4-1/4	7/8 x 4-1/4	7/8 x 4-1/4	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	ALF 71 ALF 71-1	ALF 72D ALF 72D-1	BMK 625
Price		$5,095.00 $3,712.00	$5,860.00	$3,575.31 $2,681.00	$4,480.00 $3,360.00	$1,867.00 $1,400.00