Durpoten reverse circulation drilling bits(RC Bits) are conducive to get a straight line for the drilling via our bit face and specially exhaut channels designs. The Durpoten RC Bit size can be available from 104mm to 370mm, which can be suitable to nearly all drilling requests.

RC?Bit shank available:?
1). 4'' hammer series RC Bit shank, RE004/RE004R; RE040; RE542/RE543/RE545;?
2). 5'' hammer series RC Bit shank, RE052/RE052R; RE547;?
3). 5.5'' hammer series RC Bit shank, RE054; MX5456;?
4). 6'' hammer series RC Bit shank, RC62/RC62R;?
5). 8'' hammer series RC Bit shank, RC82/RC82R;?
6). 10'' hammer series RC Bit shank, RC100/RC100R.
Other RC Bit shank type and sizes can be upon to customer's requirements.

Model	Bit range(mm)	Bit shank
DR4104	Φ104 – Φ120	RE004/RE004R
DR4111	Φ111 – Φ127	RE004
DR4113	Φ113 – Φ130	RE542
DR4120	Φ120 – Φ135	RE542
DR4122	Φ122 – Φ135	RE545
DR4124	Φ124 – Φ142	RE040
DR5126	Φ126 – Φ142	RE052
DR5130A	Φ130 – Φ146	RE052/RE052R
DR5130B	Φ130 – Φ146	RE547
DR5135	Φ135 – Φ150	RE054
DR5136	Φ136 – Φ150	MX5456
DR6152	Φ152 – Φ190	RC62/RC62R
DR7190	Φ190 – Φ250	RC82/RC82R
DR1025	Φ250 – Φ370	RC100/RC100R

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