Halco Rock Tools, UK Manufacturer of DTH Hammers and Bits. Halco pioneered the development and distribution of DTH hammers in the 1950s.
The Dominator 880 Deep Well hammer has been specifically designed for drilling deep holes under a head of water.
 
The wide body diameter of the Dominator 800 DW allows for an increased piston weight and improved performance.
One piece top adaptor reduces internal parts as no make up is required. External N.R.V (Non-Return-Valve) for easy maintenance.
Reversible cylinder for extended life.
Simplified piston geometry for improved balance and location within cylinder.
Revised chamber volumes and cycle timing to optimize performance.
Air Consumption
Size
200 - 311mm
(7 7/8-12 1/4")
Shank
DHD 380
Air Pressure
100-507 PSI
(7-35 bar)
The DHD 380 shank reduces contact stresses and wear rates.
Tech Specs
Overview
Hammer Type
Part Number
Shank
Top Thread
Hammer Flat Size
Weight
Outside Diameter
Make Up Length
Recommended Maximum Thrust
Dominator 880 DW
600261
DHD 380
4 1/2" API Reg Pin
156mm (6.142") 
177Kg
182mm (7.165")
1263mm (49.724")
2000Kg (4400 lbs)
Drill Bit Overview
DHD380
Oversize
 
 
 
 
 
Y
Y
Part
Number
650977
650373
650074
650022
650389
653483
650898
653041
Diameter
(Weight)
(Kg)
51.44
51.5
54.25
56.9
64
70.6
83.3
84.1
Face
Buttons
mm
200
203
216
241
254
254
300
311
Inch
7 7/8
8
8 1/2
9 1/2
10
10
11 7/8
12 1/4
Qty & Dia
31 x 16mm
10 x 20mm / 14 x 16mm
9 x 13mm / 19 x 20 mm
10 x 16mm 18 x 20mm
18 x 20mm / 10 x 16mm
12 x 16mm / 34 x 18mm
34 x 20mm
42 x 20mm
Design
Concave
Concave
Concave
Concave
Concave
Concave
Concave
Convex
Type
Dome
Dome
Dome
Dome
Dome
Dome
Dome
Dome
Additional bit configurations are available on request.