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RC button bits PR40

1. RC bits 86mm -102mm for 3" RC hammer RE531
2. RC bits 114mm -127mm for 4" RC hammer RE004
3. RC bits 121mm -133mm for 4.5" RC hammer RE542/RE543
4. RC bits 124mm - 138mm for 5" RC hammer RE545/PR40
5. RC bits 133mm - 146mm para 5.5" RC hammer PR52/RE547/PR54/MX5456
ROSCHEN adjust button number, button configuration, button diameter to get ultra-performance and reduce the drilling cost for you according to your rock formation situation.

Quantity:
  • PR40
  • ROSCHEN
  • RB-PR40

Product Description

RC hammer button bits PR40


ROSCHEN RC bits sizes.

1.  RC button bits 86mm -102mm for 3" RC hammer RE531

2.  RC button bits 114mm -127mm for 4" RC hammer RE004

3.  RC button bits 121mm -133mm for 4.5" RC hammer RE542/RE543

4.  RC button bits 124mm - 138mm for 5" RC hammer RE545/PR40

5. RC button bits 133mm - 146mm para 5.5" RC hammer PR52/RE547/PR54/MX5456

ROSCHEN adjust button number, button configuration, button diameter to get ultra-performance and reduce the drilling cost for you according to your rock formation situation.


PR40 RC bit

Diameter

No x Button diameter mm

Button angle

Flusing holes

Shroud Dia mm

Weight      (kgs)

Part No

mm

inch

Gauge Buttons

Front Buttons

124

4 7/8

8x14

8X13

35

2

122

14.3

PR40-124

127

5

8x14

8X14

35

2

125

14.7

PR40-127

133

5 1/4

8x16

10X14

35

2

131

15.2

PR40-133

138

5 4/9

8x16

6x16+3x14

35

2

136

15.8

PR40-138


Product description:

RC drilling is used to collect mineral and rock samples quickly and efficiently using a large rotary drill and air compressor. Reverse Circulation drilling is one of the most frequently used methods of drilling used across the world as it is more cost effective and efficient than other methods of drilling. When compared to Rotary Air Blast(RAB) and diamond drilling, RC drilling seems to be somewhere in the middle when it comes to cost, time, quality of samples, technique and depth.

ROSCHEN carry a large inventory of RC bits for convenient and quick delivery. Standard bits come with higher grade carbides for longer, harder drilling performance.  Diamond buttons are available by special order on all bits. Economize the diamond button cost even more by reclaiming the used diamonds (if in good shape) and have them reinserted in to a new bit body.  Please contact us for additional details.

 RC hammer PR40

Basics of Reverse Circulation Drilling:

1. RC drilling uses rods with inner and outer tubes, the drill cuttings are returned to surface inside the rods. The drilling mechanism is a pneumatic reciprocating piston known as a hammer driving a tungsten-steel drill bit.

2.  RC drilling utilizes much larger rigs and machinery and depths of up to 500 meters are routinely achieved. RC drilling ideally produces dry rock chips, as large air compressors dry the rock out ahead of the advancing drill bit.

3.  RC drilling is slower and costlier but achieves better penetration than RAB or air core drilling; it is cheaper than diamond coring and is thus preferred for most mineral exploration work.

4.  Reverse circulation is achieved by blowing air down the annulus of the rod, the differential pressure creating air lift of the water and cuttings up the inner tube which is inside each rod. It reaches the deflector box at the top of the drill string then moves through a sample hose which is attached to the top of the cyclone.

The drill cuttings travel around the inside of the cyclone until they fall through an opening at the bottom and are collected in a sample bag. For any drill hole there will be a large number of sample bags, each one marked to record the location and drilling depth that the sample was obtained.

The collected series of sample bag cuttings are later taken for analysis to determine the mineral composition of the drill hole. The analysis result of each individual bag represents the mineral composition at a particular sample point in the drill hole. Geologists can then survey the drilled ground analysis and make decisions about the value of the overall mineral deposit.


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