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Halco Rock Tools

		12" - Mach 142 Available Shank: IR DHD 112S The Mach 142 hammer accepts IR DHD112S shank bits and is equipped with an oversized chuck to accommodate this shank. This oversized chuck protects the cylinder and prolongs its life. This hammer has a pin drive arrangement to prevent metal to metal contact, thereby minimizing spline wear and damage, which can result in drill bit shank failure. Mach 142 has a one piece top-adaptor with N.R.V. (Non-Return-Valve) fitted for easy inspection and service, with integral finger to reduce maintenance and eliminate shimming, which increases service intervals. Suitable for operation at air pressures of 100 - 350 psi. Drilling diameters of 17 1/4 - 26". Click to enlarge Figures are based on theoretical data.

One piece top-adaptor reduces internal parts. No make up required. External N.R.V. for easy maintenance.

Revised chamber volumes and cycle timing to optimize performance.


Simplified piston geometry for improved balance and location within the cylinder.

	Hammer Overview
	Hammer Type	Mach 142
	Shank	Ingersoll Rand DHD 112S
	Top Thread	6 5/8 API Reg Pin
	Flat Hammer Size	N/A
	Weight	1516.78 lbs.
	Outside Diameter	10.748"
	Make Up Length	71.614"
	Recommended Minimum Thrust	3520 lbs.
	Recommended Maximum Thrust	7700 lbs.
	Parts List
	Hammer Type	Mach 142
	Shank	DHD 112S
	Item	Description
	1	Lifting Cap
	2	Circlip
	3	O-Ring
	4	N.R.V. Seat
	5	N.R.V.
	6	N.R.V. Spring
	7	Top-Adaptor
	8	O-Ring
	9	O-Ring
	10	Top-Adaptor Spacer
	11	Cylinder
	12	Piston
	13	Snap Ring
	14	Bearing Bush
	15	O-Ring
	16	Containment Band
	17	Bit Retaining Ring
	18	Chuck Spacer
	19	Drive Pins
	20	Chuck
	21	End Cap
	Service Kit, Repair Kit, Foot Valve, F/V Tool (Body), and F/V Tool (Pusher) available

Drill Bits
Mach 142 / DHD 112S Shank
Diameter	Face Design	Button Type	Button Qty./Dia.	Weight
17 1/4" / 438 mm	Concave	Domed	82 x 20 mm / 18 x 16 mm Wear	780.44 lbs.*
20" / 508 mm	Concave	Domed	91 x 20 mm / 36 x 16 mm Wear	1036.17*
24" / 610 mm	Concave	Domed	123 x 20 mm / 66 x 16 mm Wear	1128.77*
26" / 660 mm	Convex	Domed	171 x 20 mm / 39 x 16 mm Wear	1322.77*

*Oversize

Halco Rock Tools

12" - Mach 142