D20 D21 D20A D20P D21A D21P track bottom roller bulldozer
D20 track roller is with good lubricated oil recycle system,deep hardened wear surface,good bronze bushings,the hardness from HRC52-58,deepth:8mm-12mm
| Color | Black,yellow |
| Material | 40Mn2 |
| Method | Forging/Casting |
| Heat Treatment | Yes |
| Hardness | HRC52-58 |
| Warranty | 12 Months or 2000 hours |
| Delivery | Sea |
| Certification | ISO9001 |
| Packing | Wooden Pallet |
| Term of payment | 30% downpayment 70% before shipment |
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