products

external valve model

external valve points

valve cylindrical control valve is built in the valve housing and controls piston reciprocation.
accumulator the accumulator compensates for pressure in the hydraulic circuit and prevents pulsation. lt is not usually necessary to refill. use N2 gas only.
valve housing it protects the externalized valve and easily replaceable. prevents level of heat that has been created while operating.

function

  • extended piston stroke smoother operation Minimal Repercussion On Carrier
  • improved properties(piston) improved emergency running properties manufactured with high-quality nickel & vanadium alloy steel
  • GB tool exceptional performance and reliability manufactured with high-quality alloy steel
  • back head Power Accumulator
  • lubrication adequate for entire shift reduced wear and tear consistent availability due to extended maintenance intervals
  • cylinder & valve prevents scoring with precision finishing treatment
  • tie rod dynamic screw desing prevents damage
  • accumulator (some models applied) Reduces Irregular Pulse Pressure on hydraulic circuit improved striking power with supply of accumulated gas pressure

GB bracket type

Side Bracket Type (Triangle Type) Side Plate Type (Top Type) Box Type (Low Noise Type) Uni Ram Type For Back Hoe Loader

GB models satisfy what operators want to achieve.

GBN170E GBN220E GBN300E GBN400E GBN450E GBN460E GBN600E

GB models satisfy what operators want to achieve.

GBN170E GBN220E GBN300E GBN400E

specifications (external valve)

description external valve
GBN series GBN170E GBN220E GBN300E GBN400E GBN450E GBN460E GBN600E
operating weight (Tool+M/C) silenced Kg 1,120 1,750 2,200 2,800 3,360 3,200 4,900
lb 2,469 3,858 4,850 6,173 7,408 7,055 10,803
open top Kg 1,280 1,820 2,390 2,950 3,240 3,420 4,890
lb 2,822 4,012 5,269 6,504 7,143 7,540 10,781
Main Body Weight Kg 494 690 889 1,228 1,270 1,415 1,910
tool (moil type) Weight Kg 88 120 162 213 226 230 288
Diameter mm 120 135 150 160 165 165 180
Operating Pressure (Breaker) bar 150~170 160~180 160~180 160~180 160~180 160~180 160~180
psi 2,175~2,465 2,320~2,610 2,320~2,610 2,320~2,610 2,320~2,610 2,320~2,610 2,320~2,610
Setting Pressure(Machine) bar 200 210 220 220 220 220 220
psi 2,900 3,045 3,190 3,190 3,190 3,190 3,190
Impact Rate bpm 400~750 350~700 300~650 260~450 120~340 230~300 100~250
Accumulator Pressure (N2-Gas) bar/psi 60/870
Back Head Pressure (N2-Gas) bar/psi 6/87 6/87 6/87 6/87 16/232 16/232 12/174
Required Oil Flow l/min 90~120 125~150 150~190 180~250 190~280 200~260 250~340
g/min 23.7~31.6 33~39.6 39.6~50.1 47.5~66 50.1~73.9 52.8~68.6 66~89.7
Suitable Excavator Min ton 14 18 24 33 37 37 44
Max ton 20 28 36 50 55 55 70
Suitable ton 17 20 30 40 45 45 55
description external valve
GBN series GBN170E GBN220E GBN300E GBN400E
operating weight (Tool+M/C) silenced Kg 1,120 1,750 2,200 2,800
lb 2,469 3,858 4,850 6,173
open top Kg 1,280 1,820 2,390 2,950
lb 2,822 4,012 5,269 6,504
Main Body Weight Kg 494 690 889 1,228
tool (moil type) Weight Kg 88 120 162 213
Diameter mm 120 135 150 160
Operating Pressure (Breaker) bar 150~170 160~180 160~180 160~180
psi 2,175~2,465 2,320~2,610 2,320~2,610 2,320~2,610
Setting Pressure(Machine) bar 200 210 220 220
psi 2,900 3,045 3,190 3,190
Impact Rate bpm 400~750 350~700 300~650 260~450
Accumulator Pressure (N2-Gas) bar/psi 60/870
Back Head Pressure (N2-Gas) bar/psi 6/87 6/87 6/87 6/87
Required Oil Flow l/min 90~120 125~150 150~190 180~250
g/min 23.7~31.6 33~39.6 39.6~50.1 47.5~66
Suitable Excavator Min ton 14 18 24 33
Max ton 20 28 36 50
Suitable ton 17 20 30 40

GB models satisfy what operators want to achieve.

GBN450E GBN460E GBN600E
description external valve
GBN series GBN450E GBN460E GBN600E
operating weight (Tool+M/C) silenced Kg 3,360 3,200 4,900
lb 7,408 7,055 10,803
open top Kg 3,240 3,420 4,890
lb 7,143 7,540 10,781
Main Body Weight Kg 1,270 1,415 1,910
tool (moil type) Weight Kg 226 230 288
Diameter mm 165 165 180
Operating Pressure (Breaker) bar 160~180 160~180 160~180
psi 2,320~2,610 2,320~2,610 2,320~2,610
Setting Pressure(Machine) bar 220 220 220
psi 3,190 3,190 3,190
Impact Rate bpm 120~340 230~300 100~250
Accumulator Pressure (N2-Gas) bar/psi 60/870
Back Head Pressure (N2-Gas) bar/psi 16/232 16/232 12/174
Required Oil Flow l/min 190~280 200~260 250~340
g/min 50.1~73.9 52.8~68.6 66~89.7
Suitable Excavator Min ton 37 37 44
Max ton 55 55 70
Suitable ton 45 45 55