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620-6402
| Availability: | |
|---|---|
| Item | Specification |
|---|---|
| Part Number | 620-6402 (or 6206402) |
| Product Name | Double Flange Track Roller / Bottom Roller |
| Product Type | Undercarriage Component |
| Compatible Machine Models | Caterpillar D8, D8GC, D8 GC, D8R, D8T Dozers |
| Roller Type | Double Flange (Bottom/Lower Track Roller) |
| Single Weight | 96 kgs (211.6 lbs) |
| Material | High-strength alloy steel with induction-hardened wear surface |
| Sealing Type | Floating / Duo-cone seals for contamination protection |
| Application | Supports machine weight and guides the track chain |
| Industry Focus | Mining, Heavy Construction, Land Clearing, Heavy Dozing |
Caterpillar 620-6402 track roller
D8T double flange roller
6206402 bottom roller
CAT D8 undercarriage parts
96 kg track roller for D8 dozer
Replacement bottom roller for D8R
Caterpillar dozer track roller
D8 GC track roller
The Caterpillar 620-6402 Double Flange Track Roller is a genuine OEM-specification undercarriage component designed for Caterpillar D8 series dozers including D8, D8GC, D8 GC, D8R, and D8T. This double flange track roller (bottom roller) is a critical load-bearing component that supports the machine's weight and guides the track chain during operation.
The D8 series are large dozers used in mining, heavy construction, land clearing, and heavy dozing applications. The double flange design provides enhanced track guidance, keeping the track chain properly aligned during operation, which is especially beneficial for side slope operations and uneven terrain.
| Feature | Benefit |
|---|---|
| Double Flange Design | Enhanced track guidance keeps chain properly aligned |
| Induction-Hardened Tread Surface | Exceptional wear resistance in abrasive conditions |
| Floating / Duo-Cone Seals | Advanced sealing prevents contamination and retains lubrication |
| Precision Bearings | Smooth rotation with minimal friction for extended service life |
| Heavy-Duty Construction (96 kg) | Robust build for large dozer applications |
| D8 Series Optimized | Specifically engineered for CAT D8 series dozers |
| Factory Lubricated | Maintenance-free sealed design |
| Direct OEM Replacement | Guaranteed fit and performance |
| Machine Model | Type | Application |
|---|---|---|
| D8, D8GC, D8 GC | Dozer | Mining, heavy construction, dozing |
| D8R | Dozer | Mining, heavy construction, dozing |
| D8T | Dozer | Mining, heavy construction, dozing |
| Component | Description |
|---|---|
| Track Assembly | Complete track system |
| Single Flange Roller | Single flange track roller |
| Top Roller | Carrier roller assembly |
| Idler | Front idler assembly |
| Sprocket | Drive sprocket |
Position: This is a bottom/lower track roller - supports machine weight
Lifting Note: At 96 kg, proper lifting techniques and mechanical assistance are recommended
Bolt Torque: Follow Caterpillar OEM specifications for mounting bolt torque
Regular Inspection: Check for seal damage, bearing wear, and tread wear periodically
Lubrication: Factory-sealed; no field lubrication required
Replacement: Replace when tread wear exceeds OEM specifications or when seal failure occurs
| Condition | Action |
|---|---|
| New tread - smooth rotation | Normal operation |
| Moderate tread wear | Monitor regularly |
| Excessive tread wear (flat spots) | Replace roller |
| Seal leakage | Replace roller immediately |
| Bearing noise/play | Replace roller |
| Item | Detail |
|---|---|
| Part Number | 620-6402 / 6206402 |
| Type | Double Flange Track Roller (Bottom Roller) |
| Weight | 96 kg per piece |
| Compatibility | CAT D8, D8GC, D8 GC, D8R, D8T Dozers |
| Packaging | Individual crate |
Note: This is a double flange bottom track roller for Caterpillar D8 series dozers. The double flange design provides enhanced track guidance for side slope and uneven terrain operations. Verify machine serial number and undercarriage configuration before ordering. Due to weight (96 kg), proper lifting techniques and mechanical assistance are recommended during installation.
