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
SD10
Oversize
 
Part
Number
650648
650644
650071
650653
650072
Weight
(Kg)
84.7
97
96.4
107
146
Diameter
Face
Buttons
mm
254
280
311
356
381
Inch
10
11
12 1/4
14
15
Design
Concave
Concave
Concave
Concave
Concave
Type
Dome
Dome
Dome
Dome
Dome
Qty & Dia
11 x 16mm / 18 x 20mm
34 x 18mm
34 x 20mm
46 x 20mm
65 x 20mm
 
Additional bit configurations are available on request.