rDescriptionrrrrEccentric Overburden Casing Tools is today's preferred method for drilling in difficult ground conditions, for example, where there are boulders or loose formations. Eccentric casing drilling system is the most economical solution because its ingenious reaming wing the bit is retrievable can be used at the next hole. This is particularly designed for shallow holes, as is often the case in water well drilling, geothermal wells, and shallow micro-piling work. EDS is ideal for short holes in consolidated overburden.rThe component of the Eccentric system consists of Pilot bits, Reamer bits, Guide device, and casing shoe.rrrrEccentric system is composed of the Pilot bits, Reamer bits, Guide device and casing shoe. The eccentric system consists of a pilot bit, a reamer bit, a guide device and a casing shoe. Especially suitable for shallow holes such as water well drilling, geothermal wells and shallow micro-piling work.rrrrrrTechnical Datarr

Assembly Code	Casing Tube			Max Reaming dia. D1(mm)	Pilot Bit dia. D(mm)	Guide Device D2(mm)	Shank Style
		Outside dia.(mm)	Wall Thickness (mm)
PGZ82-3.5-108/6	108	6	116	82	94	DHD3.5
PGZ90-3.5-114/6	114	6	123	90	100	DHD3.5
PGZ115-340-142/7	142	7	151	115	126	DHD340A
PGZ115-340-146/7.5	146	7.5	155	115	128	DHD340A
PGZ140-350-168/8	168	8	189	140	149	DHD350R
PGZ140-350-178/9	178	9	192	144	156	DHD350R
PGZ149-350-183/10	183	10	197	149	161	DHD350R
PGZ165-360-195/6.5	195	6.5	211	165	179	DHD360
PGZ180-360-219/12.5	219	12.5	232	179	191	DHD360
PGZ190-360-219/7	219	7	236	190	203	DHD360
PGZ230-380-273/11.5	273	11.5	286	228	247	DHD380
PGZ240-380-273/6.5	273	6.5	308	240	257	DHD380

rr1. All diameters as above are only our standard diameters, but other diameters are also available upon request.r2. The unit weight for each size is for reference only.r3. Face design, buttons shape, buttons confguration and flushing holes number must be confrmed when the order is confirmed.r4. Please be cautious when order some bigger diameter of button bits since some bigger diameters are oversized.r5. Other shanks bits are also available as per request.rrrrWorKing PrinciplerrEccentric drilling tools with casing tube step-by-steprrrrProduct applicationrrrrrrPackaging&ShippingrrrrRelated ProductrrrrFactoryrrrrrrGaode Equipment Co., Ltd. is one of the most specialized high-air-pressure DTH drilling equipment developers and manufacturers in China. Manufacturing and supplying a varied range of high, medium, and low air pressure hammer and bit, API thread drill pipe, eccentric & symmetric casing system, and hydraulic top hammer products including tapered button bit, coupling sleeve, shank adapter, etc. Gaode make products which are perfectly compatible with the famous brand such as Atlas Copco, Ingersoll-Rand, Sandvik and other well-known manufacturers with durability and long working life and which is widely used in varies industries including blasting holes drilling, mining, earthwork, well digging, construction foundation, etc. With a high brand reputation, super quality reliability, and complete product variety, Gaode is where you can always find the best in your budget.rrrrrrContact UsrrContact us for best price and catalog of Eccentric Casting Drill System1. What is the hole depth and hole diameter you want to drill?r2. What is the geology you want to drill, for hard rock, soil or others?r3. What is the drilling machine model you have?r