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  8" Dominator 850 cutaway

8" - Dominator 850

Available Shanks: IR QL 80

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/heavier piston and a valveless air cycle, providing a 50% increase in stroke. As well as a reversible cylinder for prolonged hammer life, the Dominator 850 benefits from a QL80 shank design. The one piece top-adaptor with N.R.V. (Non-Return-Valve)
makes it easy to maintain and service the hammer. This hammer has few internal parts, which makes onsite servicing easy, with minimum
tools needed.

Suitable for operation at air pressures of 100 - 435 psi.
Drilling diameters of 8 3/4 - 10 5/8".

Click to enlarge
Dominator 850 Air Consumption table
Figures are based on theoretical data.
One piece top-adaptor reduces internal parts. No make up required. External N.R.V. for easy maintenance.
 
 
 
 
 
 
Simplified piston geometry for improved balance and location within the cylinders.
 
Reversible cylinder.
 
Revised chamber volumes and cycle timing to optimize performance.
 
IR QL80 shank reduces contact stresses and wear rates.
 
 

Dominator 850 part breakdown
Hammer Overview
Hammer Type
Dominator 850
Shank
Ingersoll Rand QL 80
Top Thread
4 1/2" API Reg Pin
Flat Hammer Size
4.921"
Weight
462.97 lbs.
Outside Diameter
7.559"
Make Up Length
50.433"
Recommended Minimum Thrust
1760 lbs.
Recommended Maximum Thrust
4400 lbs.
Parts List
Hammer Type
Dominator 850
Shank
QL 80
Item
Description
1
Thread Protector
2
Snap Ring
3
N.R.V. Seat
4
O-Ring
5
N.R.V.
6
N.R.V. Cover
7
N.R.V. Spring
8
Top-Adaptor
9
Spacer
10
O-Ring
11
Piston
12
Cylinder
13
Snap Ring
14
O-Ring
15
Bit Guide Bush
16
Bit Ring
17
Chuck Spacer
18
Chuck
19
End Cap
Service Kit, Repair Kit, Foot Valve, F/V Tool (Body), and F/V Tool (Pusher) available
info

Drill Bits
Ingersoll Rand Shank - QL 80
Size
Face Design
Button Type
Button Qty./Dia.
Weight
8 3/4" / 222 mm
Concave
Domed
14 x 18 mm / 10 x 18 mm Long
125.22 lbs.
10" / 254 mm
Concave
Domed
34 x 18 mm / 12 x 13 mm Retracks
141.10 lbs.
10 5/8" / 270
Concave
Domed
42 x 18 mm / 12 x 13 mm Retracks
153.22 lbs.
10 5/8" / 270
Concave
Parabolic
42 x 18 mm / 12 x 13 mm Retracks
153.22 lbs.