Good Quality Button Drill Bits - Eccentric Overburden Bit – TDS

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Good Quality Button Drill Bits - Eccentric Overburden Bit – TDS Detail:

ODEX/Eccentric equipment enables you to drill and case deep holes simultaneously in all types of formation, even those with large boulders.

The method is based on a pilot bit and eccentric reamer,which together drill a hole slightly larger than the external diameter of the casing tube. This enables the casing tube to follow the drill bit down the hole.

When using ODEX, part of the impact energy is diverted to the casing tube via a shoulder on the guide device, which in turn impacts a special casing shoe at the lower end of the casing.

Type	Casing Tube OD(mm)	Casing Tube ID(mm)	Casing wall thickness(mm)	Guide Device max size(mm)	Reamed Dia (mm)	Casing shoe mini Dia(mm)	Pilot bit D (mm)	Hammer type
ODEX85	108	94	7	92	117	86	85	COP34/DHD3.5
ODEX90	114	101	6.5	99	125	92	90	COP34/DHD3.5
ODEX98	127	109	9	107	138	100	98	COP34/DHD3.5
ODEX115	146	126	10	123.5	155	117	115	COP44/DHD340/SD4/QL40
ODEX140	168	148	10	146	180	138	136	COP54/DHD350/SD5/QL50
ODEX145	178	158	10	156	192	147	145	COP54/DHD350/SD5/QL50
ODEX152	183	163	10	161	196	153	151	COP54/DHD350/SD5/QL50 COP64/DHD360/SD6/QL60
ODEX165	194	174	10	172	206	162	160	COP64/DHD360/SD6/QL60
ODEX190	219	199	10	196	234	187	185	COP64/DHD360/SD6/QL60
ODEX208	245	225	10	222	263	210	208	COP84/DHD380/SD8/QL80
ODEX240	273	253	10	251	305	241	240	COP84/DHD380/SD8/QL80
ODEX280	325	300	12.5	298	350	282	280	DHD112/DHD38

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