CAT E200B Track Roller Bottom Support Roller for Excavator Undercarriage
Manufactured as OEM equivalent aftermarket accessory, the CAT E200B track roller, also named CAT E200B bottom roller or E200B excavator support roller, ranks as core CAT E200B undercarriage part of CAT E200B crawler excavator chassis system, widely known as heavy-duty E200B carrier roller / CAT E200B chassis roller for whole machine weight bearing and track guiding. Made of high-strength 40Mn2 manganese alloy steel via precision forging & integral surface quenching, this load-bearing roller bears full vehicle dead weight, restricts lateral track deviation and smooths traveling movement during digging, loading and rough terrain transfer. Strictly copied per original CAT blueprint dimension & mounting hole layout, it is direct replacement for original worn, leaking and broken rollers, top stocked spare part for global excavator repair shops, construction fleet owners and undercarriage spare parts bulk distributors.
| English Item | English Parameter |
|---|---|
| Product Name | CAT E200B Track Roller / Bottom Support Roller |
| Fit Model | CAT E200B Crawler Excavator |
| Roller Type | Single Flange / Double Flange Optional |
| Main Raw Material | 40Mn2 Alloy Manganese Steel |
| Rolling Surface Hardness | HRC55~60, Hardened Depth ≥4mm |
| Single Net Weight | Approx 34KG |
| Shaft Material | 50Mn Quenched Solid Shaft |
| Sealing Structure | Double Floating Oil Seal + NBR Rubber Ring |
- Complete undercarriage overhaul & maintenance for used CAT E200B / EL200B excavator, replace broken, oil-leakage, severe wear original rollers.
- Troubleshoot common chassis faults: track wandering, walking jitter, abnormal track derailment, heavy traveling resistance.
- Preventive spare part stocking for construction rental fleets and mining operation teams to cut unexpected downtime.
- Bulk wholesale inventory for global undercarriage spare parts suppliers, offline machinery repair workshops, parts retailers.
- Applicable working condition: municipal earthmoving, stone quarrying, road reconstruction, rugged mountain land excavation projects.
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