Hydraulic Breaker

External valve type breaker

External valve type breaker(GBN170E~GBN400E)

Heavy-duty breaker(GBN645E~GBN1000E)

  • HD-Series are designed to maximize the force and energy needed to break hard rock.
  • High operating efficiency!
  • Rock Breaker
  • Excavator Rock Breaker

    GBN220E

  • Excavator Rock Breaker

    GBN300E

  • Excavator Rock Breaker

    GBN400E

  • Rock Breaker

    GBN450E

  • Rock Breaker

    GBN1000E

Option

  1. Auto grease pump : All model available
  2. Underwater system : All model available
Model Description GBN SERIES E-SERIES HD-SERIES
GBN170E GBN220E GBN300E GBN400E GBN645E GBN745E GBN770E GBN800E GBN900E GBN1000E
Operating Weight (Tool + M/C) Silenced Kg 1,120 1,750 2,200 2,800 2,850 3,300 3,800 4,800 6,300 10,500
lb 2,469 3,858 4,850 6,173 6,283 7,275 8,378 10,582 13,889 23,149
Open Top Kg 1,280 1,820 2,390 2,950 3,050 3,400 3,900 5,050 6,430 10,750
lb 2,822 4,012 5,269 6,504 6,724 7,496 8,598 11,133 14,176 23,700
Tool (Moil Type) Weight Kg 88 120 162 213 174 236 279 326 415 470
Diameter mm 120 135 150 160 155 165 175 190 208 230
Operating Pressure (Breaker) bar 150 ~ 170 160 ~ 180 160 ~ 180 160 ~ 180 150 ~ 190 160 ~ 190 160 ~ 200 160 ~ 200 180 ~ 205 220 ~ 240
psi 2,175~2,465 2,320~2,610 2,320~2,610 2,320~2,610 2,134~2,702 2,276~2,702 2,276~2,845 2,276~2,845 2,610~2,973 3,190~3,480
Setting Pressure (Machine) bar 200 210 220 220 240 240 250 250 250 270
psi 2,900 3,045 3,190 3,190 3,480 3,480 3,625 3,625 3,625 3,915
Impact Rate bpm 400 ~ 750 350 ~ 700 300 ~ 650 260 ~ 450 300 ~ 500 300 ~ 500 250 ~ 500 250 ~ 500 170 ~ 220 140 ~ 170
Accumulator Pressure (N2-Gas) bar/ psi 60 / 870 60 / 870
Back Head Pressure (N2-Gas) bar/ psi 6 / 87 6 / 87 6 / 87 6 / 87 17 / 246 17 / 246 18 / 261 18 / 261 18 / 261 18 / 261
Required Oil Flow l/min 90 ~ 120 125 ~ 150 150 ~ 190 180 ~ 250 180 ~ 250 180 ~ 250 210 ~ 280 220 ~ 290 230 ~ 300 360 ~ 430
g/min 23.7 ~ 31.6 33 ~ 39.6 39.6 ~ 50.1 47.5 ~ 66 47.5 ~ 66 47.5 ~ 66 55 ~ 74 58 ~ 76.5 61 ~ 79 95 ~ 114
Suitable Excavator Min ton 14 18 24 33 33 33 45 45 55 70
Max ton 20 28 36 50 50 50 55 70 100 150
Suitable ton 17 20 30 40 40 40 50 55 70 100

Structure & Features

Rock Breaker
  • Back head
    Larger gas chamber design brings the high impact power.
  • Piston
    Excellent durability and long life span by using high quality material and special heat-treatment technology. Higher impact power with extended piston stroke.
  • Cylinder
    Optimized cylinder groove design and unique balance and ratio improve anti heating of oil temperature and make stable operation possible and reduce the damages like scratches.
  • Valve
    Low-resistance reduces the hydraulic fluid temperatures which increase the efficiency. | Excavator Rock Breaker
  • Valve adjuster
    Hammer BPM can be adjusted by the changing the turns of valve adjuster. Variable speed maximize the productivity of hammer. (from GBN170T to GBN400T)
  • Accumulator
    Long tool pin protects the front head from blank firing and has a long life. Dual tool retainer pins ensures correct tool alignment and dispersion of tool wear. (GBN100T above)
  • Through bolt
    High level of raw material adopting on through bolts to improve durability and help better supporting whole hammer body structure in stable.
  • Tool retainer
    Long tool pin protects the front head from blank firing and has a long life. Dual tool retainer pins ensures correct tool alignment and dispersion of tool wear. (GBN100T above)
  • Housing
    Optimized housing design by 3D modeling and lower side is reinforced by high abrasion-resistant steel. Applying Round box design which has a better durability.
  • Wearing Plates and Buffers
    Absorbs vibration to prevent impulses between carrier and hammer, also increasing durability of hammer housing and spare parts’ life time. (Silenced type breaker)
  • GB Tool
    All GB tools are manufactured in own facility under strict quality control by using premium quality material.

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