Halco Rock Tools, UK Manufacturer of DTH Hammers and Bits. Halco pioneered the development and distribution of DTH hammers in the 1950s.
The Dominator 850 has been designed for high performance drilling in hard to medium rock formations, particularly mining applications.
 
Its class leading performance has been achieved with a larger piston and valveless air cycle providing 50% increase in stroke.
 
The Dominator 850 has a reversible cylinder for prolonged hammer life and benefits from a one piece top adaptor with N.R.V (Non-Return-Valve), this makes it easier to maintain and service the hammer.
One piece top adaptor reduces internal parts as no make up is required. External N.R.V (Non-Return-Valve) for easy maintenance.
Revised chamber volumes and cycle timing to optimize performance.
Simplified piston geometry for improved balance and location within cylinder.
Reversible cylinder for extended life.
Air Consumption
 
Suitable for operation at air pressures of 100 - 507 PSI (7 - 35 bar).
 
Drilling diameters of 203-270mm (8 - 10 5/8").
The QL80 shank reduces contact stresses and wear rates.
Tech Specs
Overview
Dominator 850
Hammer Type
Part Number
Shank
Top Thread
Hammer Flat Size
Weight
Outside Diameter
Make Up Length
Recommended Maximum Thrust
600400
QL80
4 1/2" API Reg Pin
149mm (5.866") 
210Kg
192mm (7.559")
1281mm (50.433")
2000Kg (4400 lbs)
600245
QL80
4 1/2" API Reg Pin
125mm (4.921") 
210Kg
192mm (7.559")
1281mm (50.433")
2000Kg (4400 lbs)
Drill Bit Overview
QL80
Diameter
Face
Buttons
Part
Number
653379
653062
653399
653456
 
Oversize
 
 
Weight
(Kg)
51
56.8
57.1
59.5
 
Design
Concave
Concave
Concave
Convex
 
Type
Parabolic
Dome 
Dome
Dome
 
mm
203
222
229
230
 
 
Inch
8
8 3/4
9
9 1/2
 
Qty & Dia
24 x 18mm
16 x 18mm
19 x 18mm
20 x 16mm 
 
Additional bit configurations are available on request.