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  4" Mach 44 cutaway

4" - Mach 44

Available Shank: Halco Mach 44

The Mach 44 is a general purpose hammer suitable for all rock conditions at a wide range of air pressures.

The Mach 44 has a proven track record of performance and reliability. The high frequency of the Mach 44 makes it ideal when using overburden systems for broken or unstable ground conditions.

Suitable for operation at air pressures of 100 - 350 psi.
Drilling diameters of 4 1/4 - 5 7/8".

Click to enlarge
Mach 44 Air Consumption table
Figures are based on theoretical data.
 
 
Top-adaptor with integral N.R.V. (Non-Return-Valve) replaceable air distributor.
 
 
 
 
 
Simplified piston geometry for improved balance and location within the cylinder.
 
 
 
Revised chamber volumes and cycle timing to optimize performance.
 
 
 
 
 

4" Mach 44 part breakdown
Hammer Overview
Hammer Type
Mach 44
Shank
Halco Mach 44
Top Thread
2 3/8 API Reg Pin
Flat Hammer Size
2.560"
Weight
77.82 lbs.
Outside Diameter
3 3/4"
Make Up Length
39 3/8"
Recommended Minimum Thrust
550 lbs.
Recommended Maximum Thrust
1100 lbs.
Parts List
Hammer Type
Mach 44
Shank
Halco
Item
Description
1
Thread Protector
2
Top-Adaptor
3
O-Ring
4
N.R.V.
5
N.R.V. Spring
6
N.R.V. Seat
7
N.R.V. Finger
8
Shim - 0.5 mm, Shim 1.0 mm, Shim 1.5 mm
9
Compression Ring
10
O-Ring
11
Air Distributor
12
Cylinder
13
Snap Ring
14
Piston
15
Snap Ring
16
Bit Retaining Ring
17
Containment Band
18
Chuck Spacer
19
Chuck
20
End Cap
Service Kit, Repair Kit, Foot Valve, F/V Tool (Body), and F/V Tool (Pusher) available
info

Drill Bits
Halco Shank
Size
Face Design
Button Type
Button Qty./Dia.
Weight
4 1/4" / 108 mm
Convex
Domed
13 x 13 mm
20.94 lbs.
4 1/4" / 108 mm
Convex
Semi-Ballistic
15 x 13 mm
20.06 lbs.
4 1/4" / 108 mm
Concave
Domed/Ballistic
8 x 11 mm D / 8 x 11 mm B
20.06 lbs.
4 5/16" / 110 mm
Convex
Domed
15 x 13 mm
21.16 lbs.
4 5/16" / 110 mm
Convex
Semi-Ballistic
18 x 11 mm
19.84 lbs.
4 1/2" / 115 mm
Convex
Domed
8 x 14 mm / 8 x 13 mm
21.38 lbs.
4 1/2" / 115 mm
Convex
Semi-Ballistic
16 x 13 mm
21.16 lbs.
4 1/2" / 115 mm
Convex
Parabolic
17 x 14 mm
20.94 lbs.
4 1/2" / 115 mm
Concave
Domed/Ballistic
8 x 13 mm D / 8 x 13 mm B
21.16 lbs.
4 3/4" / 120 mm
Convex
Domed
8 x 14 mm / 8 x 13 mm
22.05 lbs.
5" / 127 mm
Convex
Domed
16 x 13 mm
24.25 lbs.*
5 1/8" / 130 mm
Convex
Ballistic
16 x 13 mm
24.03 lbs.*
5 1/2" / 140 mm
Convex
Domed
17 x 13 mm
27.56 lbs.*
5 7/8" / 150 mm
Convex
Domed
17 x 13 mm
29.76 lbs.*
*Oversize