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Halco Rock Tools

		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 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.

	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

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

Halco Rock Tools

4" - Mach 44