|
America West Drilling Supply...Where going in the hole makes sense!
 Bulroc CDS 510
Concentric Overburden Drilling System
Drilled Hole Diameter 22.95" -- Casing Size 22.01" O.D. x 20.98" I.D.
Technical Specifications
The CDS 510 is a Concentric Overburden Drilling System designed for the continuous casing of a 20.87" diameter hole, through loose overburden materials down into solid bedrock. The CDS 510 comprises the Driver, which is available for drilling with 18" hammers, together with a replaceable Pilot Bit and 3 replaceable Segments. The current CDS models now have the option of being supplied with a replaceable Drive Shoulder.
At the start of the drilling operation, the Segments are in the closed position to allow the System to pass through the casing shoe. When drilling commences, the Segments swing out to drill a hole of 22.95". The CDS 510 can be withdrawn through the casing by rotating the System anti-clockwise against the solid base of the hole. If there is no solid base, the System can be closed by pulling up against the casing shoe and rotating anti-clockwise.
Complete System: N180
|
 |
Component Parts |
Reference |
Description |
1 |
Driver (N180) |
2 |
Pilot Bit |
3 |
Segments (3) |
4 |
Drive Pins (3) |
5 |
Retaining Pins (2) |
6 |
Retaining Pin Circlips (2) |
7 |
Drive Plates (N180) |
8 |
Footvalve (N180) |
9 |
Drive Ring |
Specifications |
| Major Body Diameter |
20.75" |
| Length (less footvalve) |
40.63" |
| System Closed |
20.12" |
| System Open |
22.95" |
| Casing Size |
22.01" O.D. x 20.98" I.D. |
| Total Weight N180 Shank |
2970 lbs. |
|
