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Hitachi excavator track roller

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Hitachi Ex70 hitachi Track Roller Bearing Construction Equipments Machinery Spare Parts

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Hitachi Ex70 hitachi Track Roller Bearing Construction Equipments Machinery Spare Parts

  • Model:

    EX70
  • Material:

    50Mn/40MnB
  • Colors:

    Black or yellow
  • Technique:

    Forging & casting
  • Hardness:

    HRC48-54,deepth:4mm-10mm
  • Warranty time:

    2000 hour (Normal life 4000hours )
  • Finish:

    Smooth
  • Packing:

    Fumigate seaworthy packing
  • Product Details

Hitachi EX70 track roller

◎ Single and double-edge track roller suits for excavating machine and special machinery ranging 3 to 50 tons.
◎ Double conical sealing and lifelong lubrication designing enable the track roller to have longer service life and perfect performance in any circumstances.
◎ The shell made by hot forging treatment obtains superior structure of internal materials and fiber
◎ Differential quenching or feed-through quenching heat treatment is effective in crack resistance.

Hitachi EX70 track roller


Induction Harden illustration

Hitachi EX70 mini track roller


Main technical parameter for some Hitachi track rollers

Hitachi EX70 excavator track roller repair

models A B C D E F G H K L M N P
EX60-2 145 120 124 152 216 248 181 38 25 15 82 37 112
EX100A 170 140 148 184 250 285 206 50 30 17.5 89 50 120
EX200A 185 150 176 220 318 356 240 60 36.5 18 101.6 56 136.6
EX200B 185 150 169 218 290 218 242 65 38.5 19 101.6 62.5 142
EX300 215 180 201 257 368 409 285 75 42 22 114.3 72 154.3
EX300A 215 180 201 257 370 409 285 75 42 22 114 72 154
EX400A 240 200 214 284 400 447 293 85 46 23.5 125 78 162


the models above are just for reference,we can supply more products as your reuirement,please kindly send us your inquiry or click export5@vmgroup.cn here.


Production Process

Hitachi EX70 excavator track roller repair

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