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  RC 412 cutaway

RC 412

Available Shank: Halco RC 412

The RC 412 has been designed to give maximum performance in Exploration and Grade Control applications. These hammers have a one piece “integral top-adaptor” which is robust and simple, requiring no make-up components; this gives reliability and ease of service. At higher pressures RC hammers make easy going of even the hardest of rock structures.

RC 412 is equipped with a bit catcher to help retrieve shanked bits and collar the hole. The RC4/412 also has a sub-adaptor body to suit most dual wall drill pipe.

Suitable for operation at air pressures of 100 - 435 psi.
Drilling diameters of 4 3/4 - 5 3/8".

Click to enlarge
RC 412 Air Consumption table
Figures are based on theoretical data.
 
Top-adaptor sub suitable for most dual wall drip pipe.
 
Internal screen for
collecting debris.
 
N.R.V. to prevent
hammer flooding.
 
Easy sample tube removal with large bore diameter.
 
 
Simplified piston geometry
for improved balance and location within the cylinder.
 
Revised chamber volumes
and cycle timing to
optimize performance.
 
Bit catcher to prevent
loss of drill bit and seal
the hole for sampling.
 
 
 

RC 412 part breakdown
Hammer Overview
Hammer Type
RC 412
Shank
Halco RC 412
Halco RC 412
Top Thread
Remet 4"
Metzke 4"
Weight
152.12 lbs.
152.12 lbs.
Outside Diameter
4.567"
4.567"
Make Up Length
54.842"
54.842"
Parts List
Hammer Type
RC 412
Top Thread
Remet 4", Metzke 4"
Item
Description
Sub-Adaptor Assembly
1
O-Rings
2
Tube Connector
3
O-Rings
4
Sub-Adaptor Body
5
Spider
6
Snap Ring
7
Sample Tube Spring
8
Upper Sample Tube
 
Base Hammer
9
Circlip
10
N.R.V. Seat and Filter
11
O-Ring
12
Quad-Ring Seal
13
Non-Return Valve
14
N.R.V. Spring
15
Top-Adaptor Assembly
16
O-Ring
17
O-Ring
18
Sample Tube
19
Cylinder
20
Piston
21
Snap Ring
22
Guide Bush
23
O-Ring
24
Bit Retaining Ring
25
O-Ring
26
Bit Catcher
27
Key
28
Chuck
Service Kit and Repair Kit available
info

Drill Bits
Halco RC 412
Diameter
Face Design
Button Type
Button Qty./Dia.
Weight
4 3/4" / 121 mm
Concave
Domed
16 x 13 mm
30.20 lbs.
5" / 127 mm
Concave
Domed
8 x 16 mm / 9 x 13 mm
31.53 lbs.
5 1/8" / 130 mm
Concave
Domed
8 x 16 mm / 5 x 13 mm / 4 x 14 mm
31.97 lbs.
5 1/4" / 133 mm
Concave
Domed
8 x 16 mm / 5 x 13 mm / 4 x 14 mm
32.41 lbs.
5 3/8" / 136 mm
Concave
Domed
8 x 16 mm / 5 x 13 mm / 4 x 14 mm
33.07 lbs.

RC 412 Bit Catcher - Available Outside Diameters
118.00 / 118.25
124.00 / 124.25
130.00 / 130.25
119.50 / 119.75
125.50 / 125.75
131.50 / 131.75
121.00 / 121.25
127.00 / 127.25
133.00 / 133.25
122.50 / 122.75
128.50 / 128.75