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.
Diameter
Part
Number
650585
650939
650927
653474
650440
650441
650457
Face
Oversize
 
 
 
Y
Y
Y
Y
Buttons
Weight
(Kg)
23.5
26
26
30
34
42
49
mm
152
165
170
178
200
225
245
 
Inch
6
6 1/2
6 3/4
7
7 7/8
8 7/8
9 5/8
Design
Convex
Convex
Flat
Convex
Convex
Convex
Convex
Type
Dome
Dome 
Dome
Dome
Dome
Dome
Dome
Drill Bit Overview
Halco 6
Qty & Dia
16 x 16mm
19 x 16mm
19 x 16mm
18 x 16mm 
20 x 16mm
26 x 16mm
27 x 16mm
DHD360
Part
Number
650783
650793
650789
653795
650982
653097
653098
653023
650673
650684
653451
650696
Oversize
 
 
 
 
Y
Y
Y
Y
Y
Y
Diameter
Weight
(Kg)
25
25.7
25.5
26
16.16
27.3
30
34.5
35.2
40
40
50
 
Face
Buttons
mm
152
152
165
165
171
180
190
200
203
220
220
241
Inch
6
6
6 1/2
6 1/2
6 3/4
7
7 1/2
7 5/8
8
8 5/8
8 5/8
9 1/2
 
Design
Convex
Concave
Concave
Convex
Convex
Concave
Concave
Convex
Concave
Concave
Flat
Flat
 
Type
Dome
Dome 
Dome
Dome
Dome
Dome
Dome
Dome
Dome
Dome
Dome
Dome
Qty & Dia
20 x 16mm
17 x 16mm
18 x 16mm
20 x 16mm 
6 x 16mm / 13 x 18mm
18 x 16mm
24 x 16mm
21 x 16mm
31 x 16mm
22 x 20mm
15 x 18mm
18 x 16mm / 10 x 20mm
QL60
Part
Number
650094
653139
653028
653352
653160
653118
653369
653128
653227
653142
 
Diameter
Weight
(Kg)
23.2
24.4
23.85
23.9
25.3
25.1
25.35
26.2
31.7
34.1
 
Face
Buttons
Oversize
 
 
 
 
 
 
 
 
Y
Y
Y
mm
152
165
165
165
171
171
171
178
190
203
 
Inch
6 1/8
6 1/2
6 1/2
6 1/2
6 3/4
6 3/4
6 3/4
7 1/2
Design
Concave
Concave
Convex
Flat
Convex
Concave
Convex
Concave
Concave
Concave
 
Type
Dome
Dome 
Dome
Dome
Dome
Dome
Dome
Dome
Dome
Dome
 
Qty & Dia
20 x 16mm
18 x 16mm
20 x 16mm
22 x 18mm 
19 x 18mm
18 x 16mm
9 x 13mm / 19 x 18mm
8 x 20mm / 11 x 16mm
24 x 16mm
31 x 16mm
Additional bit configurations are available on request.