Halco Rock Tools, UK Manufacturer of DTH Hammers and Bits. Halco pioneered the development and distribution of DTH hammers in the 1950s.
The Mach 122 accepts A100-15 (SD12) shank bits and works over a wide pressure range with an optimum performance reached at air pressures of 200 psi (14 bar) and above.
 
Its higher air consumption provides increased up hole velocity, particularly when using oversized diameter drill bits.
 
The Mach 122 has no liner which increases the 140kg piston blow energy and reduces parts required.
One piece top adaptor reduces internal parts as no make up is required. External N.R.V (Non-Return-Valve) for easy maintenance.
Revised chamber volumes and cycle timing to optimize performance.
Simplified piston geometry for improved balance and location within cylinder.
Air Consumption
Size
311 - 445 mm
(12 1/4 - 17 1/2")
Shank
SD12
Air Pressure
100-435 PSI
(7-30 bar)
The SD12 shank reduces contact stresses and wear rates.
Tech Specs
Overview
Hammer Type
Part Number
Shank
Top Thread
Hammer Flat Size
Weight
Outside Diameter
Make Up Length
Recommended Maximum Thrust
Mach 122
600110
SD12
6 5/8" API Reg Pin
N/A
614Kg
273mm (10.748")
1600mm (65.629")
3500Kg (7700 lbs)
Drill Bit Overview
SD12
Oversize
 
Part
Number
650383
653496
650988
653478
653494
650376
Weight
(Kg)
138
154.2
208
220
231
245
Diameter
Face
Buttons
mm
311
311
381
381
445
445
Inch
12 1/4
12 1/4
15
15
17 1/2
17 1/2
Design
Concave
Concave
Concave
Concave
Concave
Concave
Type
Dome
Dome
Dome
Dome
Dome
Dome
Qty & Dia
31 x 20mm
31 x 20mm
65 x 20mm / 18 x 16mm
17x 18mm / 48 x 20mm / 18 x 16mm
79 x 20mm
79 x 20mm
Additional bit configurations are available on request.