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474-9145
| Availability: | |
|---|---|
| Item | Specification |
|---|---|
| Part Number | 474-9145 |
| Alternative Part Number | 4749145 |
| Product Name | Single Flange Track Roller / Bottom Roller |
| Product Type | Undercarriage Component |
| Compatible Machine Models | Caterpillar 6020, 6020B Hydraulic Mining Shovel |
| Roller Type | Single Flange (Bottom/Lower Track Roller) |
| Single Weight | 185 kgs (407.9 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 | Surface Mining, Heavy Excavation, Overburden Removal |
CAT 474-9145 track roller
6020B single flange roller
4749145 bottom roller for 6020
Caterpillar 6020 undercarriage parts
185 kg track roller for CAT 6020 shovel
Replacement bottom roller for 6020B
CAT mining shovel track roller
6020 hydraulic shovel undercarriage
The Caterpillar 474-9145 Single Flange Track Roller is a genuine OEM-specification undercarriage component designed for the Caterpillar 6020 and 6020B hydraulic mining shovels. This single flange track roller (bottom roller) is a critical load-bearing component that supports the machine's extreme weight and guides the track chain during operation.
The 6020 and 6020B are large mining shovels used in surface mining, heavy excavation, and overburden removal. The single flange design provides effective track guidance while balancing weight and durability. Manufactured from high-strength alloy steel with induction-hardened tread surfaces, it delivers maximum wear resistance in the most abrasive mining environments.
| Feature | Benefit |
|---|---|
| Single Flange Design | Provides effective track guidance with balanced weight distribution |
| Induction-Hardened Tread Surface | Exceptional wear resistance in extreme mining 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 (185 kg) | Robust build for large mining shovel applications |
| 6020/6020B Optimized | Specifically engineered for CAT 6020 series mining shovels |
| Factory Lubricated | Maintenance-free sealed design |
| Direct OEM Replacement | Guaranteed fit and performance |
| Specification | Detail |
|---|---|
| Machine Models | Caterpillar 6020, 6020B Hydraulic Mining Shovel |
| Machine Type | Large Mining Shovel |
| Operating Weight | ~200,000 - 210,000 kg |
| Bucket Capacity | ~12.0 - 15.0 m³ |
| Engine Power | ~800-900 HP |
| Position | Bottom / Lower track roller |
| Roller Type | Single Flange |
| Component | Part Number | Description |
|---|---|---|
| Track Plate | 487-5703 | Track shoe (51 kg) |
| Idler | Various | Front idler assembly |
| Top Roller | Various | Carrier roller assembly |
| Sprocket | Various | Drive sprocket |
Position: This is a bottom/lower track roller - supports machine weight
Lifting Requirement: Due to weight (185 kg), proper lifting techniques and mechanical assistance are required
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 | 474-9145 / 4749145 |
| Type | Single Flange Track Roller (Bottom Roller) |
| Weight | 185 kg per piece |
| Compatibility | Caterpillar 6020, 6020B Hydraulic Mining Shovel |
| Packaging | Individual crate |
Note: This is a single flange bottom track roller for the Caterpillar 6020 and 6020B hydraulic mining shovels. Verify machine serial number and undercarriage configuration before ordering. Due to weight (185 kg), proper lifting techniques and mechanical assistance are recommended during installation. Regular inspection of track rollers is essential for optimal undercarriage performance and to prevent track chain damage on this large mining shovel.
