89 Mm Top Hammer Symmetric Casing System overburden casing
Description
Symmetric/Centrex/Symmitrix Drilling System
Symmetric is a concentric drilling system with retrievable pilot bits.
Permanent Model
The ring bit will be left in the hole after drilling finished.
This system drills in any direction and in any type of ground condition.
It is, in fact, the most flexible and efficient overburden system on the markettoday.
The Symmetric components are made up of:
---A pilot bits with large internal flushing holes and external flushinggrooves
---Symmetrical ring bit (reamer) with internal bayonet coupling
---Casing shoe for driving of casing.
The Pilot bits is attached to any common DTH hammer shank.
The Prodrill symmetric drilling system is designed to drill and case a hole simultaneously through unstabled groundconditions. The driver bit incorporated with a satisficial ring or reusable ring makes a full face head design which significantly improves the penetration rate and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, and thus minimising the disruption of the surronding of the drill hole.
Advantages
Full face head desigh for faster penetration and straighter hole
Less torque is required
Can drilll in vertical, horizotal or any direction
Minimize disruption to the drilled hole
Specification
Atlas Copco SOD Permanent/Top hammer
Symmetrix overburden drilling system |
|
| Order number |
Casing wall
max. thickness |
Ring bit |
Pilot bit |
Unit |
|
| Inner |
Outer |
Outer |
| ATLAS-SOD 76 |
8 |
41 |
88 |
58 |
mm |
| 0.31 |
1.61 |
3.46 |
2.26 |
inch |
| ATLAS-SOD 89 |
8 |
54 |
100 |
70 |
mm |
| 0.31 |
2.13 |
3.94 |
2.76 |
inch |
RoBit Size Permanent/Top hammer
Symmetrix overburden drilling system |
| Code No. |
Casing O.D. |
Wall thickness |
Ring bit I.D. |
Ring bit O.D. |
Polit bit O.D. |
Thread |
|
| mm |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
| RoBit-SOD 89 |
89 |
3 1/2'' |
4 |
0.157 |
71 |
2.795 |
99 |
3.898 |
80 |
3.15 |
T38 |
| RoBit-SOD 76 |
76 |
3'' |
8 |
0.315 |
47 |
1.85 |
90 |
3.543 |
59 |
2.323 |
T38 |
| RoBit-SOD 89 |
89 |
3 1/2'' |
8 |
0.315 |
50.8 |
2 |
94.9 |
3.736 |
70 |
2.756 |
T38 |
| RoBit-SOD 101 |
101.6 |
4'' |
10 |
0.394 |
65 |
2.559 |
110 |
4.331 |
79 |
3.11 |
T38 |
| RoBit-SOD 114 |
114 |
4 1/2'' |
10 |
0.394 |
73.5 |
2.894 |
120.3 |
4.736 |
92.5 |
3.642 |
T38 |
| RoBit-SOD 140 |
140 |
5 1/2'' |
10 |
0.394 |
94 |
3.701 |
145.7 |
5.736 |
117.5 |
4.626 |
T45 |
| RoBit-SOD 168 |
168 |
6 5/8'' |
10 |
0.394 |
127 |
5 |
182.3 |
7.177 |
147 |
5.787 |
T45 |
Our main products are as below:
Construction & Mining & Rock Drill Tools:
A. DTH Hammer and Bit (2''-24''), Overburden Drilling System; RC System.
B. Top Hammer (drill hole dia.: 33 ~ 152mm).
1) Thread Tools (Button Bits, Rod, Coupling, Shank Adaptor): (R25/28/32/38, T38/45/51, ST58,GT60).
2) High Rang Soundless Cracking Agent (dia. 40 ~ 50mm).
Quarrying Drill Tools (drill hole dia.: 17 ~ 45mm).
1) Taper Drill Tools (Bit: button/chisel; Rod: Tapered/Integral), Carbide Tips, Segment, Grinding Wheel, Grinder.
3) Pneumatic Rock Drill: Hand-held (Y24, TY24C), Air leg (YT28) and Gasoline (YN27J).
4) Expansive Mortar (dia. 30 ~ 35mm); Hydraulic Rock Splitter PD40-250, Aluminum Cylinder.
5) Air Pushing Bag, Water Bag; Pneumatica Splitter G10, Hand Splitter, etc.
6) Hydraulic Breaker hammer, Paving breaker TPB40, 60, 90 for rock or concrete demolition.
7) PD28, PD45, PD90, PD115/HC20 Excavator mounted rock drilling.
Should you are interested in our products,pls contact us freely .
We do wish we can establish the good and long-term business relations and make us stronger and mutual benefit together.
Audited Supplier 
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