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Komatsu Hydraulic Breakers

Komatsu Middle East. Parts Depot. Komatsu Hydraulic Breakers. Hydraulic breakers. Applications. Constructions. Quarries. Mines. Utility ,inside cities. Hydraulic breakers. Which needs is a customer hammering into OUR head ?. One Face support. Solution. High Impact Energy.

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Komatsu Hydraulic Breakers

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  1. Komatsu Middle East Parts Depot Komatsu Hydraulic Breakers

  2. Hydraulic breakers Applications • Constructions • Quarries • Mines • Utility ,inside cities

  3. Hydraulic breakers Which needs is a customer hammering into OUR head ? • One Face support Solution • High Impact Energy • Reliability & Durability • Low running costs • Ecological

  4. Long piston (stroke) hydr. energy same diameter gas energy YES, Komatsu has it ! High impact Energy • Dual power source, hydraulic and gas • Long piston (stroke) • Less lost energy transfer by Same diameter (weight), piston & chisel

  5. YES, Komatsu has it ! Reliability & Durability Low running cost A unique and simple design leads to: • Only 2 moving parts • Fewer parts item, approx. 30% less • No internal accumulator ! • Effect of gas cushion • Effect of unique side bolts • Effect of dust preventer

  6. Effect of Unique Simple Structure • 30% fewer parts than most other hammers • Reduce large volume of inventory parts for DB and end users • Reduce cost of repair and reassemble Only Two Moving Parts • Control valve • Moves to change oil flow direction • Piston • Moves up and down in cylinder • Length ensures positive alignment with tool Control Valve Piston

  7. Side Bolt Nut Side Bolt Rubber Cushion Side Bolt Ring Side Bolts (4) Cylinder cover Cylinder Nut Chisel holder Helisert Effect of unique side bolts `Competitor

  8. Unique side bolts(Detail) Small differences ? … big results !

  9. Piston Air Chisel Effect of dust preventer (same as others) Patm P P Air Intake Valve

  10. Effect of gas cushion (Same as others) Hydraulic Cushioning • Orifice on return side provides good hydraulic cushioning • Protecting carrier’s hydraulic system from pulse • Reducing the frequency of maintenance of Hy’d hammer Hydraulic Cushion

  11. Effect of Nitrogen Cushion Chamber (Unique) • Absorbing recoil energy of piston filled at Komatsu pressure • Reducing shock waves to carrier • Reducing stress on seals by low gas pressure • Easier maintenance compare to high/ low pressure chamber N2 Gas Chamber

  12. Hydraulic Breaker Trend 1st generation • Mechanical Spring Type (disappear) 2nd generation - Hy’d & Gas system with Accumulator (still Common) 3rd generation • Hy’d & Gas system without Accumulator (Most recent)

  13. First generation Mechanical Spring type • Steel spring installed in cylinder cover • Short life – tried many kinds of spring • Tried air spring type also

  14. Second generation Accumulator type • Accumulator installed • Filled Cushion gas in cylinder cover • Additional bush and seals

  15. Second generation Accumulator type: advantages • Pulse absorbed by diaphragm • Low cushion gas ( Impact energy generated by hy’d pressure) • Impact energy directly affected by oil flow Accumulator type: disadvantages • Increasing number of consumable parts • Life of consumable parts • Low impact energy when diaphragm broken • Maintenance of accumulator (Cause of closedown) • Accumulator easy damage due to pump performance improved (improper oil flow adjustment)

  16. Third generation Non-Accumulator type • Eliminate accumulator to lower the failure rate • Decrease number of components • Easy maintenance

  17. Third generation, Non-Accumulator type Difficult points for development of Non-Accumulator type A. How to Reduce the Pulse • Restriction in IN and OUT circuit • Accumulation of KNOW-HOW for degree of restriction • Limit pressure fluctuation by change of piston stroke & large Dia dimension B. Holding Impact Energy • Adjustment of cushion gas • redesign hy’d circuit (improve efficiency) C. ImpactEfficiency • How to harness pressure energy efficiently under gas pressure from 3.5 to 8- 10kg/㎠ • Adjustment of piston Dia

  18. Competition Rammer – Montabert - Furukawa – Krupp/Atlas – NPK

  19. Type of Hammer Gas Only: NPK • High Cushion Gas Pressure • High Recoil (High Vibration Value) • complicate to Refill Cushion Gas Hydraulic + Gas: Komatsu, Krupp, Okada, Furukawa • Non Accumulator (Komatsu) • Easy to Refill Cushion Gas • Low Gas Pressure • Fewer Component Parts Hydraulic Only: Montabert, Indeco • Need Big Accumulator • Impact Energy affected by PxQ directly • Low Recoil

  20. Competitors NPK • Manufactured in Japan • Installing Accumulator on carrier required at customer’s expense • Replacing a sleeve in a cylinder required • High Cushion Gas Pressure ( 2.4 ~ 2.7 Mpa) • 100% reply on Gas Pressure ( Hammer doesn’t work without gas pressure. Komatsu hammers run at half power without gas pressure.) Krupp • Manufactured in Germany • Accumulator installed on Hammer Montabert Manufactured in France • Market confused by Ingersoll Rand acquisition • Expensive component parts • Use big accumulator • Two speed as option (Called as Thinking Hammer), almost no need

  21. Competitors Furukawa • Manufactured in Japan • Use Accumulator • Expensive component parts Rammer • Manufactured in Finland • Complex structure and many moving components • Use Accumulator • Absorbing recoil energy by using springs & rubber buffer pad • Body swings in housing (Loss of energy and high wear) Indeco • Manufactured in Italy • Low Unit Price • Known to have tool ( Chisel ) problems • Expensive component parts • Similar to Montabert Design

  22. Competitors

  23. PC200 Construction Industry Manufacturers Association

  24. CIMA PC200/220

  25. Product range Introduced in Middle East

  26. Jordan – PC350 / JTHB230

  27. Ireland – Mc Hale PC150 / JTHB100

  28. Ireland – Mc Hale PC150 / JTHB100

  29. Bosnia – Herzegovina TEIKOM PC450 / JTHB65

  30. Finland – SRO PC27MR / JTHB30

  31. Finland – SRO PC228 / JTHB150

  32. Ireland – Mc Candless PC210 / JTHB190

  33. Funzi Keys – Kenya PC200 / JTHB150

  34. Sweden – Swelog PC340 / JTHB310

  35. Croatia – TEIKOM PC450 / JTHB310

  36. Croatia – TEIKOM PC340 / JTHB310

  37. Iceland – Kraftvelar PC340 / JTHB310

  38. Germany – GP Baumaschinen PC450 / JTHB310

  39. Germany – GP Baumaschinen PC450 / JTHB310

  40. Remember … • High Impact Energy Thank you for your interest in this great product ! => Dual Power source • Reliability & Durability • Low running costs => Simple & efficient design => Built on experience => No internal accumulator ! • Back Pressure resistant => Fits on any excavator • Ecological

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