Hydraulic Breaker

Internal valve type breaker

Internal Valve type Breaker

T Series (GBN10T~GBN170T) & Series (Accumulator type) (GBN210T~GBN400T)
  • Korean Hydraulic Breaker

    GBN30T

  • Korean Hydraulic Breaker

    GBN70T

  • Hydraulic Breaker For Skid Steer

    GBN220T

  • Hydraulic Breaker For Skid Steer

    GBN400T

Option

  1. Auto grease system : GBN70T above~
  2. Anti Blank Firing system : GBN140T, 210T, 220T available
  3. Underwater system (Air vent hole) : GBN60T above~
Model Description GBN SERIES T-SERIES F-SERIES
GBN10T GBN20T GBN30T GBN45T GBN60T GBN70T GBN100T GBN140T GBN170T GBN210T GBN220T GBN400T
Operating Weight
(Tool + M/C) 		Silenced Kg 135 145 180 250 310 380 570 890 1,200 1,700 1,930 2,400
lb 298 320 397 551 683 838 1,257 1,962 2,646 3,748 4,255 5,291
Open Top Kg 75 86 160 225 324 380 613 850 1,280 1,800 2,020 2,640
lb 165 190 353 496 714 838 1,351 1,874 2,822 3,968 4,453 5,820
Tool
(Moil Type)		 Weight Kg 4 6.0 9 12 20 25 41 59 97 125 129 193
Diameter mm 40 45 53 60 70 75 90 100 125 135 140 155
Operating Pressure
(Breaker)		 bar 80~100 80~100 90~120 100~130 95~130 100~140 130~160 150~170 150~170 160~180 160~180 160~180
psi 1,160 ~ 1,450 1,160 ~ 1,450 1,305 ~ 1,740 1,450 ~ 1,885 1,377 ~ 1,885 1,450 ~ 2,030 1,885 ~ 2,320 2,175 ~ 2,465 2,175 ~ 2,465 2,320 ~ 2,610 2,320 ~ 2,610 2,320 ~ 2,610
Setting Pressure
(Machine)		 bar 150 150 150 160 170 180 190 200 200 210 210 220
psi 2,175 2,175 2,175 2,320 2,465 2,610 2,755 2,900 2,900 3,045 3,045 3,190
Impact Rate bpm 800~1,400 700~1,200 600~1,100 500~1,000 450~1,000 475~950 480~850 450~780 420~730 350~680 280~550 280~550
Accumulator Pressure
(N2-Gas)		 bar/ psi NONE ACCUMULATOR 60/870
Back Head Pressure
(N2-Gas)		 bar/ psi 14/203 14/203 16/232 16/232 16/232 16/232 16/232 16/232 16/232 16/232 16/232 16/232
Required Oil Flow l/min 15~30 20~35 25~50 30~60 34~60 40~80 45~85 85~110 100~120 120~150 120~150 160~240
g/min 3.9~7.9 5.3~9.2 6.6~13.2 7.9~15.8 8.9~15.8 10.5~21.1 11.8~22.4 22.4~29 26.4~31.6 31.6~39.6 31.6~39.6 42.2~63.3
Suitable Excavator Min ton 0.8 1.2 2.5 3 3.5 6 6 10 15 18 20 28
Max ton 2.5 3 4.5 5.5 7 9 13 17 20 28 30 40
Suitable ton 1 2 3 5 6 7 10 14 17 20 24 34

Structure & Features

Hydraulic Breaker For Skid Steer
  • 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. | Koren hydraulic 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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