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Caterpillar excavator track roller

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Caterpillar D8K bulldozer undercarriage part single(double) track roller(bottom roller)7S9042

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Undercarriage part

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Track roller: Located in the lower part of the und

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Caterpillar D8K bulldozer undercarriage part single(double) track roller(bottom roller)7S9042

  • Model:

    D8K
  • 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

Caterpillar D8K bulldozer single(double) 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.


Induction Harden illustration

Caterpillar D8K bulldozer bottom roller


Main technical parameter for some Caterpillar track rollers

Caterpillar D8K bulldozer bottom rollerCaterpillar D8K bulldozer lower roller

models A B C D E F G H M K L O I P N
D3(double) 274 231 155 125 152 178 132 101.6 175 20 170 12.5 54 13.5 28
D3(single) 274 231 155 125 152 178 132 101.6 175 20 12.5 13.5 50
D3C(single) 274 231 155 125 152 178 142 101.6 175 14.3 12.3 13.5 50
D3C(double) 274 231 155 125 152 178 142 101.6 175 14.3 167 12.3 50 13.5 27
D4D(D4)(single) 353 298.4 175 142 203 230 125 89 221 29 13 17 70
D4D-KDK(single) 353.46 298.4 175 142 203 230 135 89 221 28 13 17 70
D4D-KDK(double) 353.46 298.4 175 142 203 230 135 89 221 28 223 13 72 17 40
D4H(single) 330 298.68 173 143 175 198 88.9 221 39.5 32.5 18 70
D4H(double) 330 298.68 173 143 175 198 88.9 221 39.5 191 32.5 70 18 40
D5(single) 369 317.5 211 174 202 233 152 101.6 241 30 13.5 17 80
D5(double) 369 317.5 211 174 202 233 152 101.6 241 30 224 13.5 82 17 46
D5H(single) 368 317.6 206 171 197 226 152 101.6 250 31.5 17 18 86
D5H(double) 368 317.6 206 171 197 226 152 101.6 250 31.5 215 17 86 18 50
D6D(single) 390 330.2 227 188 210 246 154 114.3 255 40 15.8 21 90
D6D(double) 390 330.2 227 188 210 246 154 114.3 255 40 232 15.8 93 21 55
D6H(single) 390 330.2 227 188 210 246 154 114.3 255 35 15.8 22 90
D6H(double) 390 330.2 227 188 210 246 154 114.3 255 35 232 15.8 93 22 55
D7G(single) 422 368.3 247 207 224 260 160 114.3 288 40 16 23 96
D7G(double) 422 368.3 247 207 224 260 160 114.3 288 40 242 16 100 23 60
D8K(single) 505 428.6 296 248 255.6 300 195 133.3 338 37.5 0.5 27 120
D8K(double) 505 428.6 296 248 255.6 300 195 133.3 338 37.5 280 0.5 120 27 84
D8N(single) 456 432.5 278 234 242 274 325 100
D8N(double) 456 432.5 278 234 242 274 325 257 97 54


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

Caterpillar D8K bulldozer Track roller repair

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