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21T-30-00211
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| Item | Specification |
|---|---|
| Part Number | 21T-30-00211 |
| Alternative Part Number | 21T3000211 |
| Product Name | Track Roller / Single Flange Track Roller |
| Product Type | Undercarriage Component |
| Compatible Machine Models | Komatsu PC2000, PC2000-8, PC2000-11, PC2000SR-8 Mining Excavator |
| Roller Type | Single Flange (Bottom/Lower Track Roller) |
| Single Weight | 340 kgs (749.6 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 | Surface Mining, Heavy Excavation, Overburden Removal |
Komatsu 21T-30-00211 track roller
PC2000 single flange roller
21T3000211 bottom roller for PC2000
Komatsu PC2000 undercarriage parts
340 kg track roller for PC2000 excavator
Replacement bottom roller for Komatsu PC2000
Komatsu mining excavator track roller
PC2000-8 lower track roller
The Komatsu 21T-30-00211 Track Roller (Single Flange) is a genuine OEM-specification undercarriage component designed for the Komatsu PC2000 series mining excavators (PC2000, PC2000-8, PC2000-11, PC2000SR-8). 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 PC2000 series are ultra-class mining excavators used in large-scale 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 |
| Ultra-Heavy-Duty Construction (340 kg) | Built for the largest mining excavators |
| PC2000 Series Optimized | Specifically engineered for PC2000, PC2000-8, PC2000-11, PC2000SR-8 |
| Factory Lubricated | Maintenance-free sealed design |
| Direct OEM Replacement | Guaranteed fit and performance |
| Specification | Detail |
|---|---|
| Machine Models | Komatsu PC2000, PC2000-8, PC2000-11, PC2000SR-8 |
| Machine Type | Ultra-Class Mining Excavator |
| 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 Assembly | 21T-32-01014 / 21T-32-01017 | Complete track assembly (9,540 kg / 9,350 kg) |
| Idler | 21T-30-00590 | Front idler (1,390 kg) |
| Top Roller | 21T-30-00561 / 21T-30-00221 | Carrier roller (129 kg / 160 kg) |
| Sprocket | 21T-27-71173 | Drive sprocket (251 kg) |
Position: This is a bottom/lower track roller - supports machine weight
Lifting Requirement: Due to extreme weight (340 kg), specialized heavy lifting equipment is mandatory
Bolt Torque: Follow Komatsu 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 | 21T-30-00211 / 21T3000211 |
| Type | Track Roller / Single Flange Bottom Roller |
| Weight | 340 kg per piece |
| Compatibility | Komatsu PC2000, PC2000-8, PC2000-11, PC2000SR-8 |
| Packaging | Individual crate |
Note: This is a single flange bottom track roller for the Komatsu PC2000 series mining excavators (PC2000, PC2000-8, PC2000-11, PC2000SR-8). Due to its extreme weight (340 kg / 750 lbs), specialized heavy lifting equipment and professional installation are mandatory. Verify machine serial number and undercarriage configuration before ordering. Regular inspection of track rollers is essential for optimal undercarriage performance and to prevent track chain damage on this ultra-class mining excavator.
