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| Item | Specification |
|---|---|
| Part Number | 97077040 |
| Product Name | Idler Assembly / Front Idler |
| Product Type | Undercarriage Component |
| Compatible Machine Models | Komatsu PC4000 Mining Excavator |
| Single Weight | 2,528 kgs (5,573 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 97077040 idler
PC4000 front idler assembly
Komatsu PC4000 undercarriage parts
2528 kg idler for PC4000 excavator
Replacement idler for Komatsu PC4000
Komatsu mining excavator front idler
PC4000 track idler
The Komatsu 97077040 Idler Assembly (Front Idler) is a genuine OEM-specification undercarriage component designed for the Komatsu PC4000 mining excavator. This idler is a critical component that guides the track chain and maintains proper track tension at the front of the undercarriage.
The PC4000 is an ultra-class mining excavator 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 (2,528 kg) | Built for the largest mining excavators |
| PC4000 Optimized | Specifically engineered for Komatsu PC4000 mining excavator |
| Direct OEM Replacement | Guaranteed fit and performance |
| Specification | Detail |
|---|---|
| Machine Model | Komatsu PC4000 Mining Excavator |
| Machine Type | Ultra-Class Mining Excavator |
| Operating Weight | ~400,000 - 450,000 kg |
| Bucket Capacity | ~22.0 - 28.0 m³ |
| Engine Power | ~1,800 - 2,000 HP |
| Position | Front idler |
| Component | Part Number | Description |
|---|---|---|
| Idler | 97077040 | Front idler (2,528 kg) |
| Sprocket | — | Drive sprocket |
| Top Roller | — | Carrier roller |
| Bottom Roller | — | Track roller |
Position: This is a front idler - do not use in other positions
Lifting Requirement: Due to extreme weight (2,528 kg / 2.5 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 | 97077040 |
| Type | Idler Assembly / Front Idler |
| Weight | 2,528 kg per piece |
| Compatibility | Komatsu PC4000 Mining Excavator |
| Packaging | Individual crate |
Note: This is a front idler assembly for the Komatsu PC4000 ultra-class mining excavator. Due to its extreme weight (2,528 kg / 2.5 metric tons / 5,573 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.
