GMD120 DTH Hammer

GMD120 is Optimal for hard and abrasive rocks. It is heavy-duty or reversible for Long life. Advanced shank design for maximum energy efficiency with High penetration rate and low maintenance costs. Control tube sub assembly is used for guiding piston which minimizes the service requirements.

Specifications

Metric
Imperial

Description	Metric
Length w/o Bit	980 mm
Outside Dia	121 mm
Weight	47 kg
Cylinder Bore	88 mm
Piston Stroke	80 mm
Piston Weight	10.5 kg
Hole Sizes	120-140 mm
Wrench Size A/F	A/F 74.5 mm/W -40 mm
Suitable Shank	4-3/4in K4 Button Bit

Description	Imperial
Length w/o Bit
Outside Dia	Outside Dia
Weight
Cylinder Bore	C
Piston Stroke
Piston Weight
Hole Sizes
Wrench Size A/F
Suitable Shank

Benefits

Optimal for hard and abrasive rocks
Heavy-duty or reversible casting for long life
Advanced shank design for maximum energy e?ciency
High penetration rate
Low running and maintenance costs
Control tube sub assembly is used for guiding piston which minimizes the service requirements
Hammer is inbuilt with bu?er ring which will sustain the compressive load generated from drill string
Parts interchangeable with Sandvik K4