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High Air Pressure DTH Hammer HD-85A
Jayalakshmi's high quality top hammer rock drilling tools, which are widely use in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole, mountain reinforcement, anchorage and other engineering holes, geothermal exploration hole, well bore and other fields.
| 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 26m³/min |
2.4Mpa 34m³/min |
