Atlas Copco BBC 34 WS

The slim polyurethane silencer cuts noise by up to 50 percent. And it’s designed to stay out of sight.

Long stroke, high impact energy.

With the pusher leg control placed in back head of the rock drill, they are easy to reach.

Technical details
Rock drill type	Underground rock drill
Hole range	27 mm - 41 mm 1 inch - 1.6 inch
Weight	34.5 kg 76 lb
Length	775 mm 30.5 inch
Air consumption	88 l/s 186 cfm
Impact rate	2,280 blows/min
Revolutions	0 rpm
Penetration rate	0 mm/min
Hose connection	0 mm
Piston diameter	80 mm 3.15 inch
Stroke length	70 mm 2.76 inch
Vibration and sound
Vibration level 3 axes (ISO 28927-10)	0 m/s²
Vibration level 3 axes (ISO 20643)	0 m/s²
Vibration level 3 axes (ISO 5349-2)	20.4 m/s²
Vibration level 3 axes (ISO 20642)	0 m/s²
Sound power level guaranteed (2000/14/EC)	120 Lw. dB(A)
Sound pressure level (ISO 11203)	109 Lp. dB(A)
Available shank sizes
Shank size: Hex	22x108 mm - 7⁄8 x 41⁄4 inch
Part numbers
Hex 22x108 - ⅞ x 4 ¼ inch	8311 0303 47