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| Item | Specification |
|---|---|
| Part Number | 21T-30-00540 |
| Alternative Part Number | 21T3000540 |
| Product Name | Idler Assembly / Front Idler |
| Product Type | Undercarriage Component |
| Compatible Machine Models | Komatsu PC2000, PC2000-8, PC2000-11, PC2000SR-8 Mining Excavator |
| Single Weight | 1,390 kgs (3,064 lbs) |
| Material | High-strength alloy steel, induction-hardened tread surface |
| Sealing Type | Floating / Duo-cone seals for contamination protection |
| Application | Guides and maintains proper tension of the track chain |
| Industry Focus | Surface Mining, Heavy Excavation, Overburden Removal |
Komatsu 21T-30-00540 idler
PC2000 front idler assembly
21T3000540 idler for PC2000
Komatsu PC2000 undercarriage parts
1390 kg idler for PC2000 excavator
Replacement idler for Komatsu PC2000
Komatsu mining excavator front idler
PC2000-8 track idler
The Komatsu 21T-30-00540 Idler Assembly (Front Idler) is a genuine OEM-specification undercarriage component designed for the Komatsu PC2000 series mining excavators (PC2000, PC2000-8, PC2000-11, PC2000SR-8). This idler is a critical component that guides the track chain and maintains proper track tension at the front of the undercarriage.
The PC2000 series are ultra-class mining excavators used in large-scale surface mining, heavy excavation, and overburden removal. The idler features a precision-machined tread surface with induction hardening for maximum wear resistance. Advanced floating seals prevent contamination and retain lubrication, ensuring extended service life in severe mining conditions.
| Feature | Benefit |
|---|---|
| Induction-Hardened Tread Surface | Exceptional wear resistance in extreme mining conditions |
| Floating / Duo-Cone Seals | Advanced sealing prevents contamination and retains lubrication |
| High-Strength Alloy Steel | Maximum durability for ultra-class mining applications |
| Precision Bearings | Smooth rotation with minimal friction for extended service life |
| Ultra-Heavy-Duty Construction (1,390 kg) | Built for the largest mining excavators |
| PC2000 Series Optimized | Specifically engineered for PC2000, PC2000-8, PC2000-11, PC2000SR-8 |
| 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 | Front idler |
| Component | Part Number | Description |
|---|---|---|
| Track Assembly | 21T-32-01014 / 21T-32-01017 | Complete track assembly (9,540 kg / 9,350 kg) |
| Top Roller | 21T-30-00560 / 21T-30-00220 | Carrier roller (152 kg / 130 kg) |
| Bottom Roller | 21T-30-00211 | Single flange bottom roller (340 kg) |
| Sprocket | 21T-27-71173 | Drive sprocket (251 kg) |
| Part Number | Weight | Compatibility Notes |
|---|---|---|
| 21T-30-00481 | 1,350 kg | PC2000-11 specific |
| 21T-30-00540 | 1,390 kg | Standard heavy-duty idler |
| 21T-30-00590 | 1,390 kg | Alternate heavy-duty idler |
Position: This is a front idler - do not use in other positions
Lifting Requirement: Due to extreme weight (1,390 kg / 1.39 metric tons), specialized heavy lifting equipment is mandatory
Bolt Torque: Follow Komatsu OEM specifications for mounting bolt torque
Track Tension: The idler works with the tensioner to maintain proper track sag
Regular Inspection: Check for tread wear, seal damage, and bearing play periodically
Replacement: Replace when tread wear exceeds OEM specifications or when seal failure occurs
| Condition | Action |
|---|---|
| New tread - sharp profile | Normal operation |
| Moderate tread wear | Monitor regularly |
| Excessive tread wear (flat spots) | Replace idler |
| Seal leakage | Replace idler immediately |
| Bearing play | Replace idler |
| Item | Detail |
|---|---|
| Part Number | 21T-30-00540 / 21T3000540 |
| Type | Idler Assembly / Front Idler |
| Weight | 1,390 kg per piece |
| Compatibility | Komatsu PC2000, PC2000-8, PC2000-11, PC2000SR-8 |
| Packaging | Individual crate |
Note: This is a front idler assembly for the Komatsu PC2000 series mining excavators (PC2000, PC2000-8, PC2000-11, PC2000SR-8). Due to its extreme weight (1,390 kg / 1.39 metric tons / 3,064 lbs), specialized heavy lifting equipment and professional installation are mandatory. Verify machine serial number and undercarriage configuration before ordering. Regular inspection of the idler tread and seals is essential for optimal undercarriage performance on this ultra-class mining excavator.
