SolutionCauseProblem
Change the drill steel or chuck bushing or bothMisalignment of the shankChipping of the piston tip
Change pistonExcessive wear of the piston tip
Lower the water pressure
2
if it is the same as or greater than the
air pressure
Lack of lubricationSpline breakage
Increase lubrication or change oil
Increase regularity of servicingDirt intrusion (specially when drilling
upwards)
Lower the water pressure if it is the same as or greater than the air
pressure
Lack of lubricationPiston breakage
Increase lubrication or change oil
Tighten the bolts correctlyUneven tension in the side bolts
Change the worn partWorn intermediate part/piston guide (can
be confirmed by the cushion test)
Tighten the bolts correctlyUneven tension on the boltsSide bolt breakage
1
Gauge for chuck bushing 22 mm (
7
⁄
8
”) hexagon shank Atlas Copco no. 3091 0038 00.
2
Use Atlas Copco no. 9090 0550 80 pressure gauge to test the water and air pressure.
Machine data
Shank dimension
mm
(in.)
Weight
kg
(lb)
Overall length
mm
(in.)
Stroke length
mm
(in.)
Piston bore
mm
(in.)Part numberType
22 X 108
(⅞ x 4¼)
28.5
(63.0)
710
(28)
55
(2
1
⁄
6
)
70
(2
3
⁄
4
)
8311 0401 10BBC 16W
22 X 108
(⅞ x 4¼)
29.5
(65.0)
710
(28)
55
(2
1
⁄
6
)
70
(2
3
⁄
4
)
8311 0303 46BBC 16WS
22 X 108
(⅞ x 4¼)
33.5
(74.0)
775
(30
1
⁄
2
)
70
(2
3
⁄
4
)
80
(3
1
⁄
7
)
8311 0408 05BBC 34W
22 X 108
(⅞ x 4¼)
34.5
(76.0)
775
(30
1
⁄
2
)
70
(2
3
⁄
4
)
80
(3
1
⁄
7
)
8311 0303 47BBC 34WS
22 X 108
(⅞ x 4¼)
34.0
(75.0)
740
(29)
70
(2
3
⁄
4
)
80
(3
1
⁄
7
)
8311 0408 10BBC 34WTH
Reaming hole diameter
mm
(in.)
Hole diameter
mm
(in.)
Impact rate (6 bar)
Hz
Air consumption (6 bar)
l/s
(foot
3
/min )
Type
≤76
(≤3)
27-41
(1-1.6)
3969
(146)
BBC 16W
≤76
(≤3)
27-41
(1-1.6)
3969
(146)
BBC 16WS
≤76
(≤3)
27-41
(1-1.6)
3888
(186)
BBC 34W
≤76
(≤3)
27-41
(1-1.6)
3888
(186)
BBC 34WS
≤76
(≤3)
27-41
(1-1.6)
3888
(186)
BBC 34WTH
Noise and vibration declaration statement
Guaranteed sound power level Lw according to EN ISO 3744 in accordance with directive 2000/14/EC.
Sound pressure level Lp according to EN ISO 11203.
Vibration value A and uncertainty B determined according to ISO 5349-2. See table ”Noise and vibration data”
for the values of A, B, etc.
25© 2012 Atlas Copco Construction Tools AB | No. 9800 0627 71f | 2012-06-30
Original instructions
Safety and operating instructionsBBC 16W, 16WS, 34W, 34WS, 34WTH
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