Product Description Odex Casing Drilling System SOD Symmetric casing rings bit For small-hole sizes, Prodemo produces the ODEX Eccentric Overburden Drilling System, starting with the ODEX90 to suit 114mm O.D. casings. This two-piece system comprises the shanked bit holder and the eccentric pilot bit that is secured in the bit holder by a double interlocking pin. This is easily removed to allow for bit are sharpening or replacement. Prodemo ODEX overburden drilling systems are widely used in a variety of applications from well drilling and minipilling to rock anchoring and site investigation. Application Range: It is suitable for drilling water wells , geothermal wells , short mircopiles ,medium mini-type grouting hole of building , dam and harbour project . 1. When drilling starts , the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly 2. When the required depth is reached , rotation is reversed carefully, whereupon the reamer swings in , allowing the drill bit assembly to be pulled up through the casing. 3. Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent. 4. Drilling continues to the desired depth in the bedrock using a conventional drilling. How to order? Casing Tube Out Diameter & Inner Diameter + Reamer Bit Diameter + Minimal Casing Shoe Inner Diameter + Hammer Shank Style

Casing Tube	Casing Tube	Reamed Dia(mm)	Casing Shoe	Polit bit	Hammer	Drill Pipe
OD(mm)	ID(mm)		ID(mm)	Dia(mm)	Type	(mm)
108	95	118	80	70	DHD3.5/QL30	76
114	101	128	90	80	DHD3.5/QL30	76
127	114	141	100	90	DHD3.5/QL30	76
140	124	154	110	98	DHD340/QL40	76
146	126	160	114	102	DHD340/QL40	76
168	148	182	132	120	DHD350/QL50	76/89
178	158	192	142	130	DHD350/QL50	76/89
183	163	198	152	138	DHD350/QL50	89/114
194	174	210	164	148	DHD360/QL60	89/114
219	199	235	184	170	DHD360/QL60	89/114
245	225	261	210	192	DHD380/QL80	114
273	253	293	238	219	DHD380/QL80	114/127
325	305	348	294	270	SD10/NUMA100	127
406	382	426	374	350	SD12/NUMA125	140