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Serial Number | Specification Model | Lateral Plate Diameter D1 | Major Diameter D2 | Axle Hole Diameter D4 | Carrying Hole Diameter D5 | Center Distance E of Axle Hole and Carrying Hole | External Width L1 | Internal Width L2 |
1 | 400 | 400 | 224/250280 | 125/127 | 28 | 100 | 265300 | 224250 |
2 | 500 | 500 | 280/315355 | 125/127 | 28 | 100 | 300375 | 250315 |
3 | 560 | 560 | 315/355400 | 125/127 | 28 | 100 | 355425 | 280355 |
4 | 630 | 630 | 355/400450 | 125/127 | 28 | 100 | 375475 | 315400 |
5 | 710 | 710 | 400/450500 | 250 | 40 | 170 | 425530 | 355450 |
6 | 800 | 800 | 450/500560 | 250 | 40 | 170 | 475600 | 400500 |
7 | 1000 | 1000 | 560/630710 | 250 | 50 | 250 | 750 | 630 |
8 | 1250 | 1250 | 710/800900 | 250 | 50 | 250 | 950 | 800 |