8 Inch DTH Hammers

8DHSD_Overview MP80_OverviewThe Mincon range of 8” 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 8” hammers are available in the popular DHD 380, QL80 and SD8 shanks.

  • 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.

Imperial Specifications

Mincon 8DH Mincon MP80 Mincon 8DHSD
Hammer Outside Diameter 7.15″ 7.15″ 7.15″
Hammer Length (Less Drill Bit) 47.4″ 46.7″ 46.3″
Backhead Spanner Flat Size 5.5″ 5.5″ 5.5″
Drill Bit Shank Type DHD380 QL80 SD8/6315
Standard Backhead Thread¹ 4-1/2″ A.P.I. Reg Pin 4-1/2″ A.P.I. Reg Pin 4-1/2″ A.P.I. Reg Pin
Minimum Bit Size 7.88″ 7.88″ 7.88″
Hammer Weight (Less Bit) 385lbs 381lbs 383lbs
Drill Bit Weight 115lbs 117lbs 107lbs
Piston Weight 86lbs 86lbs 86lbs
Backhead Stand Off 0.030″ 0.030″ 0.030″
Recommended Minimum Air Package² 900cfm @ 350psi 900cfm @ 350psi 900cfm @ 350psi

¹ Other Backhead threads available upon request

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