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
Halco 1
Part
Number
650017
650032
 
Weight
(Kg)
3.9
3.9
 
Diameter
Face
Buttons
Oversize
 
mm
55
64
 
Inch
2 1/6
3 1/2
 
Design
Convex
Convex
 
Type
Semi Ballistic
Dome
 
Qty & Dia
13 x 11mm
13 x 11mm
 
 
Halco 2
Oversize
 
 
Part
Number
650952
650953
 
Diameter
Weight
(Kg)
2.4
2.5
 
Face
Buttons
mm
70
76
 
Inch
2 3/4
3
Design
Flat
Flat
Type
Dome
Dome
Qty & Dia
4 x 9mm / 6 x 11mm
5 x 9mm / 6 x 11mm
 
IR 3.5
Oversize
 
 
Part
Number
650622
650623
650609
650620
653237
650610
650621
650624
Diameter
Weight
(Kg)
3.9
3.9
4.0
4.0
4.5
4.5
4.5
4.9
Face
Buttons
mm
90
90
95
95
95
100
100
105
Inch
3 1/2
3 1/2
3 3/4
3 3/4
3 3/4
3 15/16
3 15/16
4
Design
Convex
Convex
Convex
Convex
Flat Face
Convex
Convex
Convex
Type
Semi Ballistic
Dome
Semi Ballistic
Dome
Dome
Ballistic
Dome
Dome
Qty & Dia
13 x 11mm
13 x 11mm
15 x 11mm
15 x 11mm
8 x 14mm / 6 x 11mm
15 x 11mm
15 x 11mm
8 x 13mm / 8 x 11mm
 
MD 3.5
Oversize
 
 
Weight
(Kg)
5.05
5.2
5.0
Part
Number
653354
653349
653628
Diameter
Face
Buttons
Qty & Dia
11 x 14mm
16 x 11mm
13 x 11mm
mm
90
100
105
Inch
3 1/2
3 15/16
4
 
Design
Convex
Flat
Convex
Type
Parabolic
Dome
Ballistic
Additional bit configurations are available on request.