• Hjg Hm4a DTH Hammer (HM4)
  • Hjg Hm4a DTH Hammer (HM4)
  • Hjg Hm4a DTH Hammer (HM4)
  • Hjg Hm4a DTH Hammer (HM4)
  • Hjg Hm4a DTH Hammer (HM4)

Hjg Hm4a DTH Hammer (HM4)

Customized: Customized
Standard: JIS
Length: Taper-length
Type: Drilling Machine
Mining Object: Mining
Trademark: HJG
Customization:

Contact Supplier

Mr. Larry Wu
Director of International Sales Department
Diamond Member Since 2013

Suppliers with verified business licenses

Manufacturer/Factory & Trading Company

Basic Info.

Model NO.
HM4
Origin
China
HS Code
84123100

Product Description

Hjg Hm4a DTH Hammer (HM4)

It is a kind of high air pressure DTH Hammer without footvalve, our newest design. It is also one of the most advanced DTH Hammers in the world.

It has the following advantages:
1. Out of the trouble of foot valve fracture and expansion and contraction.
2. Lower energy consumption and higher impact frequency. The drilling speed is 15%-30% higher than the one with foot valve.
3. Simple structure, reliable parts, long life, easy and cheap maintenance.
4. Lower air and oil consumption. The oil consumption is about 10% lower than the one with foot valve.
Length(exclude bit) Weight(exclude bit) External Diameter Bit Shank Hole Range Connection Thread
1005 mm 40.00 kg  Φ99 mm   HM4 Φ110mm _ Φ135mm API 2 3/8'' Reg 
Working Pressure Impact rate at 0.5 MPa Recommended Rotary Speed Air Consumption
1.0 MPa 1.8 MPa 2.4 MPa
1.0 - 2.5 MPa 30 Hz 25-40 rpm 5 m³/min  9 m³/min 14 m³/min

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Contact Supplier

Mr. Larry Wu
Director of International Sales Department
Diamond Member Since 2013

Suppliers with verified business licenses

Manufacturer/Factory & Trading Company
Number of Employees
834
Year of Establishment
1999-04-30