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High air pressure DTH hammer
High Air Pressure DTH Hammer HD-85A

Technical Parameter
Item Description Weight (KG) Part Number
1. Top Sub 34 HD85A-01
2. "O"-Ring of Top Sub 0.015 HD85A-02
3. Check Valve 1.2 HD85A-03
4. Spring 0.1 HD85A-04
5. Air Distributor 6.00 HD85A-05
6. Internal Cylinder 6.5 HD85A-06
7. Piston 42.5 HD85A-07
8. External Cylinder 60 HD85A-08
9. Guided Sleeve 5.3 HD85A-09
10. "O"Ring of Stop Ring 0.1 HD85A-10
11. Stop Ring 1.2 HD85A-11
12. Driver Chuck 17.5 HD85A-12
13. Drill Bit   HD85A-13
Product data  
Length(Without bit) 1358mm
Weight(Without bit) 175.0Kg
Bits shank Cop84/DHD380/HD85
External diameter Φ180mm
Bits diameter Φ195-Φ254mm
Connection Thread API 4 1/2"Reg
Working Pressure 1.0-3.0Mpa
Impace rate at.1.7Mpa 22Hz
Recommended rotation speed 15-25r/min
Air consumption 1.8Mpa

Note:The following parameters take DHD380A without foot valve DTH hammer as an example. We also can provide Mission80 , Cop84 , QL80 , SD8 series DTH hammers to you.