HYDRAULIC BREAKERS

Special Applications - Index by product
Special Applications - Index by job category

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HYDRAULIC BREAKERS JTHB SERIES

The KOMATSU hydraulic breaker design incorporates only two internal moving parts, thus offering reliability and long life.
Each breaker has a wide range of oil flow settings allowing the mounting of the same breaker on a wide range of equipment, for use in a variety of applications such as Constructions, Demolition, Recycling, Mining and Quarrying.
With breakers available in 15 models from 73kg to 4000kg class, you are assured of finding just the right tool for the job.
  • Unified range:
    Based on the concept "imple is best" KOMATSU breakers are built under an identical design philosophy from the smallest breaker (JTHB08) up to the largest breaker (JTHB400).
  • No accumulators:
    Designed to eliminate the traditional rubber bladder type accumulator to minimize maintenance and downtime.
  • A nitrogen filled cushion chamber with low pressure :
    absorbs recoil energy and increases output energy.
    The gas pressure in the cushion chamber is relatively low with 8 - 11 bar.

Low running costs
Fewer and durable parts, simple structure and no accumulators reduce running cost .
Actually this is the core feature of KOMATSU breakers.
Once you use for a while, you will appreciate the benefitscompared to other brands.

Auto - grease system (option)
(mounted on the bracket)
KOMATSU breakers above JTHB40 can be equipped with an Auto - grease system as option.
The system is fully incorporated in the bracket of the breaker and doesn't require an external power source. Experience the convenience of operating breakers without manual greasing regularly and the extension of the life of your breaker.

Main specifications
Model JTHB08 JTHB10 JTHB20 JTHB30 JTHB40 JTHB50
Working weight
1 pc top type kg 75 85 110 190 220 305
2 pc top type 75 100 140 210 255 315
Box type 90 120 165 255 320 385
Overall Length with bracket A mm (1140.5 - 1172.5) (1139 - 1174) (1308 - 1338) (1429 - 1463) (1544 - 1584) (1688 - 1738)
Overall Length w/o bracket B mm 955.5 - 987.5 1002 - 1037 1079 - 1109 1215 - 1249 1310 - 1350 1419 - 1469
Overall Height C mm 220 260 300 360 400 420
Overall Width D mm 280 280 290 310 310 330
Tool length mm 450 470 495 590 640 710
Tool diameter mm 40 45 50 58 64 75
Oil flow lit/min 18 - 25 20 - 30 20 - 35 25 - 45 30 - 55 35 - 60
Operating pressure Mpa 6 - 13 7 - 14 8 - 15 10 - 15 10 - 16 10 - 16
kgf/cm2 65 - 130 75 - 140 85 - 150 105 - 150 105 - 160 105 - 160
Impact rate bpm 930 - 1300 700 - 1200 600 - 1150 550 - 1000 580 - 1060 550 - 1000
Impact energy J 99.9 158.3 230.4 320.9 454.7 494.7
Hose size inch 3/8 1/2 1/2 1/2 1/2 1/2
Gas pressure Mpa 0.8 0.8 0.8 0.8 0.8 0.8
Base machine
Model range   PC09
PC10MR		 PC15MR PC20MR PC27MR
PC30MR		 PC35MR PC40MR
PC45MR
Weight range t 0.7 - 1.5 1 - 2 1.5 - 2.5 2.4 - 4 3 - 4.5 3.8 - 6

Model JTHB60 JTHB65 JTHB70 JTHB100 JTHB150 JTHB190
Working weight
1 pc top type kg 420 660 920 1060 1630 2000
2 pc top type 450 700 1005 1115 1760 2030
Box type 570 820 1100 1240 1950 2200
Overall Length with bracket A mm (1842 - 1892) (2056 - 2106) (2207 - 2272) (2424 - 2489) (2856 - 2949) (2932 - 3017)
Overall Length w/o bracket B mm 1517 - 1567 1672 - 1722 1823 - 1888 1970 - 2035 2496 - 2589 2470 - 2555
Overall Height C mm 480 540 590 598 794 754
Overall Width D mm 380 430 480 490 600 610
Tool length mm 800 800 930 930 1170 1180
Tool diameter mm 95 95 115 115 135 140
Oil flow lit/min 45 - 80 70 - 100 70 - 110 100 - 140 160 - 200 160 - 210
Operating pressure Mpa 10 - 16 11 - 17 12 - 17 12 - 17 14 - 18 14 - 18
kgf/cm2 105 - 160 115 - 170 125 - 170 125 - 170 145 - 180 145 - 180
Impact rate bpm 550 - 1000 600 - 900 450 - 700 430 - 600 450 - 600 370 - 490
Impact energy J 690 1108 1502 2217 3579 4691
Hose size inch 3/4 3/4 3/4 1 1 1
Gas pressure Mpa 0.8 0.8 0.8 0.8 1.1 0.8
Base machine
Model range   PC60/PC78US
WB70A		 WB91R -
WB98A
WB140PS/
150PS		 PC100
- PC138US		 PC160LC PC200
- PC228US		 PC220
PC230
Weight range t 6 - 11 7 - 8 8 - 15 14 - 20 18 - 25 20 - 30

Model JTHB230 JTHB310 JTHB400
Working weight
1 pc top type kg 2550 N/A N/A
2 pc top type 2650 3380 4420
Box type 2740 3570 4520
Overall Length with bracket A mm (3179 - 3264) (3592 - 3702) (3957 - 4082)
Overall Length w/o bracket B mm 2627 - 2712 2882 - 2992 3217 - 3342
Overall Height C mm 850 944 970
Overall Width D mm 650 680 680
Tool length mm 1180 1360 1540
Tool diameter mm 146 160 178
Oil flow lit/min 180 - 230 240 - 300 280 - 390
Operating pressure Mpa 13 - 18 14 - 18 14 - 18
kgf/cm2 135 - 180 145 - 180 145 - 180
Impact rate bpm 380 - 450 370 - 470 370 - 470
Impact energy J 5719 7306.8 –
Hose size inch 1 1 - 1/4 1 - 1/4
Gas pressure Mpa 0.8 0.8 0.8
Base machine
Model range   PC300
- PC350		 PC400
PC450		 PC600
PC650
Weight range t 27 - 40 38 - 50 45 - 70
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