Re-Circulation Hammer

Re-circulation


Imperial Sizes
Free Air Consumption - Without Venturi (C.F.M.)

Model

Outside
Dia.

Length
w/o Bit

Weight
w/o Bit

Piston
Weight

150 psi

200 psi

250 psi

300 psi

350 psi
BRC4 3.88" 40.35" 88lb 15.52lb 150 200 250 330 400
BRC5 4.75" 45.90" 130.9lb 19.14lb 180 250 340 425 512
BRC6 5.63" 45.82" 182.6lb 29.2lb 275 385 540 660 800




































































Metric Sizes































Free Air Consumption - Without Venturi (C.F.M.)

Model

Outside
Dia.

Length
w/o Bit

Weight
w/o Bit

Piston
Weight




10.2 Bar
 13.6 Bar
 17.0 Bar
 20.4 Bar
 23.8Bar
BRC4 98mm
 1025mm
 40kg
 6.6kg




4.3
 5.6
 7.3
 9.3
 11.3
BRC5 121mm
 1166mm
 59kg
 8.7kg




5.1
 7.1
 9.6
 12.0
 14.5
BRC6 143mm
 1164mm
 83kg
 13.3kg




7.8
 10.7
 14.8
 18.7
 22.6




















Request Quote

Venturi Option

All Bulroc R.C. Hammes can be fitted with a modified valce seat which will develop a strong centuri action and assist in collecting loose and unconsildated materials in the hole, at the same time improving up hole velocity within the inner tube and reducing the incidence of blocking off.

Operating Pressure PSI 150 200 250 300 350
Addition Air Required CFM 80 110 130 165 195
Operating Pressure BAR 150 200 250 300 350
Addition Air Required M3/min 2.28 3.00 3.66 4.60 5.48

Bulroc R.C. Button Bits













Bulroc Dual Wall Drill Tubes
Bit Dia.
MM. | IN.		 Weight
Kg. | Lb.		 Part No.



Outside
Diameter		 Inner Tube
Bore		 Effective
Length		 Part No.
108   4-1.4" 9.0   19.8 BBS103CC108HS 3.5" 2.0" 3MM DCWT5830M
133   5-1/4" 14.2   31.2 BBS104CC133HS 6MM DCWT5860M
159   6-1/4" 21.7   47.7 BBS105CC159HS 4.5" 2.5" 3MM DCWT5930M
6MM DCWT5960M

Bulroc R.C. Dual Wall Swivels
Swivel

Pipe Size Part No.
Air Inlet Swivel 3.5" AIS44222

4.52 AIS44333
Sample Return Swivel 3.5" SR55222
4/5" SR55333

Request
Quote

Adaptor Subs

Bulroc R.C. Hammers are connected tot eh dual wall drill tube by way of a simple sub incorporating a central samle tubes.  The make of dual wall drill tube intended to be used should be specified when ordering Bulroc R.C. Hammers.


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