Halco Rock Tools, UK Manufacturer of DTH Hammers and Bits. Halco pioneered the development and distribution of DTH hammers in the 1950s.
Head Designs
Convex Face
 
Strong design for all conditions especially hard abrasive rock.
 
Good balance of fast drilling and long service life.
Flat Face
 
Alternative design for all rock conditions especially fractured and fissured rock and changing formations.
Concave
 
Alternative design for all rock conditions, particularly deep hole drilling can improve hole alignment as a result of inverted pilot.
Drill Bit Overview

Oversize
 
 
 
 
 
Y
Y
Y


Weight
(Kg)
15
15.5
15.08
15.5
16
17.8
18.0
18.5

Halco 5
Part
Number
650461
650717
650838
650578
650913
650990
650463
650464
Diameter
Face
Buttons
mm
127
127
127
140
135
146
150
165
Inch
5
5
5
5 1/2
5 3/8
5 3/4
5 7/8
6 1/2
Design
Convex
Concave
Convex
Convex
Flat
Concave
Convex
Convex
Type
Dome
Ballistic
Ballistic
Dome
Semi Ballistic
Dome
Dome
Dome
Qty & Dia
13 x 16mm
8 x 16mm / 8 x 13mm
18 x 11mm
14 x 16mm 
9 x 13mm / 9 x 16mm
8 x 18mm / 7 x 16mm
14 x 16mm
16 x 16mm
DHD350R
Oversize
 
 
 
 
 
Y
Y
Y
Weight
(Kg)
16
16.4
16.2
15.9
16.16
16.45
17.8
17.8
21.4
 
Part
Number
653061
650677
653205
653070
653272
650772
650676
653711
653092
 
 
Diameter
Face
Buttons
mm
127
140
140
140
140
140
150
152
165
 
Inch
5
5 1/2
5 1/2
5 1/2
5 1/2
5 1/2
5 7/8
6
6 1/2
 
Design
Concave
Concave
Flat
Convex
Flat
Concave
Concave
Convex
Concave
 
Type
Dome
Dome / S-Ballistic
Dome
Semi-Ballistic
Dome / S-Ballistic
Dome
Dome /S-Ballistic
Convex
Concave
 
Qty & Dia
8 x 13mm / 8 x 16mm
8 x 16mm / 7 x 16mm
7 x 16mm / 8 x 16mm Long
8 x 16mm / 8 x 16mm Long
8 x 16mm / 8 x 16mm
15 x 16mm
9 x 16mm / 10 x 16mm
20 x 16mm
10 x 16mm / 8 x 20mm
QL50
Part
Number
653238
653149
653423
653235
653032
 
Diameter
Weight
(Kg)
13.53
15.92
14.3
16.32
16.6
Face
Buttons
Oversize
 
 
 
 
Y
mm
130
140
140
140
150
 
Inch
5 1/8
5 1/2
5 1/2
5 1/2
5 7/8
 
Design
Convex
Concave
Convex
Flat
Flat
 
Type
Ballistic
Dome
Ballistic
Dome
Dome
 
Qty & Dia
18 x 14mm
15 x 16mm
18 x 14mm
8 x 16mm / 8 x 16mm Long 
8 x 16mm / 8 x 16mm Long
 
Halco RC500
Diameter
Part
Number
653554
653555
653556
653557
653487
Face
Buttons
Oversize
Weight
(Kg)
27.4
27.6
27.8
28.0
40.0
mm
137
140
143
146
189
Inch
5 3/8
5 1/2
5 5/8
5 3/4
7 1/2
Design
Drop Centre
Drop Centre
Drop Centre
Drop Centre
Drop Centre
Type
Dome
Dome
Dome
Dome
Dome
Qty & Dia
12 x 16mm / 4 x 13mm
12 x 16mm / 4 x 13mm
12 x 16mm / 4 x 13mm
12 x 16mm / 4 x 13mm
16 x 16mm / 10 x 13mm
Additional bit configurations are available on request.