4 Inch DTH Hammers

The Mincon range of 4” DTH hammers is designed around proven technology to perform at the top end of the performance scale compared to other tools on the market. These tools are excellent for all types of drilling applications including residential geothermal, production quarry drilling, seismic drilling and small construction drilling.

The Mincon range of 4” hammers are available in the popular DHD 340A shank, the SD4 shank and a Mincon designed heavy duty shank for operation at higher pressures.

• Patented features maximize energy output and reduce service requirements.
• Fewer internal components minimize service requirements.
• Valveless, high frequency design ensures smooth operation.
• Hardened wear sleeve for optimum wear resistance even in the most abrasive conditions.
• Multi-start threads on backhead and chuck ensure easy coupling/uncoupling of hammer.
• Unique internal mount system eliminates the need for wear shims and special assembly tools.
• All critical internal components are heat treated under strict control to maximize tool longevity.

 

	Mincon 4HDS	Mincon 4HR	Mincon 4HRSD	Mincon 4HRTD
Hammer Outside Diameter	3.82″	3.82″	3.82″	3.82″
Hammer Length (Less Drill Bit)	37.6″	37.6″	37.6″	37.6″
Backhead Spanner Flat Size	2.5″	2.5″	2.5″	2.5″
Drill Bit Shank Type	MD4	DHD 340A	SD4/3415	TD40
Standard Backhead Thread¹	2-3/8″ A.P.I. Reg Pin	2-3/8″ A.P.I. Reg Pin	2-3/8″ A.P.I. Reg Pin	2-3/8″ A.P.I. Reg Pin
Minimum Bit Size	4.33″	4.33″	4.33″	4.33″
Hammer Weight (Less Bit)	85lbs	85lbs	85lbs	85lbs
Drill Bit Weight	19lbs	35lbs	39lbs	44lbs
Piston Weight	17lbs	17lbs	17lbs	17lbs
Backhead Stand Off	0.030″	0.030″	0.030″	0.030″
Recommended Minimum Air Package²	250cfm @ 150psi	250cfm @ 150psi	250cfm @ 150psi	250cfm @ 150psi

¹ Other Backhead threads available upon request

² Drilling conditions and project specifications may require larger air package to be used