Halco Rock Tools, UK Manufacturer of DTH Hammers and Bits. Halco pioneered the development and distribution of DTH hammers in the 1950s.
The Halco RC400 has been designed to give maximum performance in Exploration and Grade control applications.
 
The integral adaptor housing allows easy access to the long lasting sample tubes. Enhanced performance stems from a simple robust design that reduces complicated maintenance procedures, which result in more downtime.
 
The RC400 features improved flushing characteristics from high velocity air flow directed through the drill bit.
 
The RC 400 is offered with either Remet or Metzke threads on the sub adaptor body and an integral Drill Bit Catcher System for added peace of mind.
Top loading filter to prevent debris entering the hammer.
N.R.V (Non-Return-Valve) to prevent hammer from flooding.
Easy sample tube removal.
Piston and liner configuration for optimal airflow.
Air Consumption
 
Suitable for operation at air pressures of 200 - 600 PSI (14 - 41 bar).
 
Drilling diameters of 127 - 189mm (5 -7 1/2").
8 spline bit shank gives large drive area and reduces contact stresses.
Bit Catcher to prevent loss of bit head if failure occurs and seals the hole for sample recovery.
Tech Specs
Wear Limits
Overview
RC400
Hammer Type
Part Number
Shank
Top Thread
Hammer Flat Size
Weight
Outside Diameter
Make Up Length
Recommended Maximum Thrust
600405
Halco
Remet 4"
125mm (4.921") 
77Kg
121mm (4.764")
1306mm (51.417")
2000Kg (4400 lbs)
600407
Halco
Metzke 4"
125mm (4.921") 
77Kg
121mm (4.764")
1306mm (51.417")
2000Kg (4400 lbs)
600415
Halco
Metzke 4.5"
125mm (4.921") 
77Kg
121mm (4.764")
1306mm (51.417")
2000Kg (4400 lbs)
Drill Bit Overview
Halco RC400 - Extra Flushing Design
Diameter
Face
Buttons
Oversize
Part
Number
653469
653470
653471
653472
653486
Weight
(Kg)
14.1
14.1
14.3
14.3
36.5
Type
Dome
Dome
Dome
Dome
Dome
mm
127
130
133
136
189
Inch
5
5 1/8
5 1/4
5 3/8
7 1/2
Design
Drop Centre
Drop Centre
Drop Centre
Drop Centre
Drop Centre
Qty & Dia
12 x 16mm / 2 x 13mm
12 x 16mm / 2 x 13mm
12 x 16mm / 4 x 13mm
12 x 16mm / 4 x 13mm
16 x 16mm / 10 x 13mm
Halco RC400 - Heavy Duty Design
Diameter
Part
Number
653558
653559
653560
653561
Face
Buttons
Oversize
 
 
Weight
(Kg)
14.2
14.2
14.4
14.4
Inch
5 1/8
5 1/4
5 3/8
mm
127
130
133
136
Design
Drop Centre
Drop Centre
Drop Centre
Drop Centre
Type
Dome
Dome
Dome
Dome
Qty & Dia
14 x 16mm / 2 x 13mm
14 x 16mm / 2 x 13mm
14 x 16mm / 4 x 13mm
14 x 16mm / 4 x 13mm  
Additional bit configurations are available on request.
Halco RC400 - Shroud
Outside Diameter
Part
Number
604602
604603
604604
604605
Inch
4.92" 
5.04"
5.16"
5.28"
mm
125
128
131
134