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  8" Dominator 880 cutaway

8" - Dominator 880

Available Shanks: IR QL 80

The Dominator 880 is a general purpose hammer suitable for a wide range of air pressures. The Dominator 880 is a well drilling hammer with a mid to high range air volume. The one piece top-adaptor with N.R.V. (Non-Return-Valve) makes it easy to maintain and service the hammer. A choice of blank, 4 mm, 6 mm, or 8 mm chokes can be fitted to provide varied airflow, making the Dominator 880 a versatile hammer. The wide body diameter of the Dominator 880 allows for an increased piston weight and, therefore, an improved performance. The unique air distributor integral with top-adaptor reduces requirements for shimming.

Suitable for operation at air pressures of 100 - 435 psi.
Drilling diameters of 7 7/8 - 12 1/4".

Click to enlarge
Dominator 880 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.
 
 
 
Reversible cylinder.
 
Simplified piston geometry for improved balance and location within the cylinders.
 
 
Revised chamber volumes and cycle timing to optimize performance.
 
IR QL80 shank reduces contact stresses and wear rates.
 
 
 
 

Dominator 880 part breakdown
Hammer Overview
Hammer Type
Dominator 880
Shank
Sandvik Mission
A63-15/SD8
Ingersoll Rand
DHD 380
Top Thread
4 1/2" API Reg Pin
4 1/2" API Reg Pin
Flat Hammer Size
6.142"
6.142"
Weight
390.22 lbs.
390.22 lbs.
Outside Diameter
7.165"
7.165"
Make Up Length
49.724"
49.724"
Recommended Minimum
   Thrust
1760 lbs.
1760 lbs.
Recommended Maximum
   Thrust
4400 lbs.
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
O-Ring
12
Blank Plug - Blank, 4 mm, 6 mm, 8 mm
13
Cylinder
14
Piston
15
Snap Ring
16
Spacer
17
Containment Band
18
Bit Ring
19
Chuck Spacer
20
Chuck
21
End Cap
Service Kit, Repair Kit, Foot Valve, F/V Tool (Body), and F/V Tool (Pusher) available
info

Drill Bits
Sandvik Mission A63-15/SD8 Shank
Size
Face Design
Button Type
Button Qty./Dia.
Weight
7 7/8" / 200 mm
Concave
Domed
12 x 16 mm / 9 x 20 mm /
6 x 13 mm
94.80 lbs.
8" / 203 mm
Concave
Domed
10 x 20 mm / 14 x 16 mm
95.90 lbs.
8" / 203 mm
Concave
Domed/S-Ballistic
10 x 20 mm D / 14 x 16 mm SB
94.80 lbs.
8 5/8" / 219 mm
Concave
Domed
18 x 20 mm
101.41 lbs.
8 3/4" / 222 mm
Concave
Domed
24 x 20 mm
102.51 lbs.
9 1/2" / 241 mm
Concave
Domed
18 x 20 mm
115.74 lbs.
10" / 254 mm
Concave
Domed
11 x 16 mm / 18 x 20 mm
124.56 lbs.
10" / 254 mm
Flat
Domed
28 x 20 mm
128.53 lbs.
10 5/8" / 270 mm
Concave
Domed
34 x 18 mm
125.66 lbs.
11 7/8" / 300 mm
Flat
Domed
29 x 20 mm
186.29 lbs.*
Ingersoll Rand Shank - DHD 380
7 7/8" / 200 mm
Concave
Domed
31 x 16 mm
114.64 lbs.
8" / 203 mm
Concave
Domed
10 x 20 mm / 14 x 16 mm
113.54 lbs.
9 1/2" / 241 mm
Concave
Domed
10 x 16 mm / 18 x 20 mm
125.44 lbs.
10" / 254 mm
Concave
Domed
18 x 20 mm / 10 x 16 mm
142.20 lbs.
11 7/8" / 300 mm
Convex
Domed
34 x 20 mm
186.29 lbs.*
12 1/4" / 311 mm
Concave
Domed
42 x 20 mm
185.41 lbs.*
*Oversize