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9271451
| Availability: | |
|---|---|
| Item | Specification |
|---|---|
| Part Number | 9271451 |
| Product Name | Track Adjuster Assembly / Track Tensioner |
| Product Type | Undercarriage Component |
| Compatible Machine Models | Hitachi EX1200-6, EX1200-7 Mining Excavator |
| Single Weight | 684 kgs (1,508 lbs) |
| Material | High-strength alloy steel with hardened components |
| Application | Maintains proper track chain tension |
| Industry Focus | Surface Mining, Heavy Excavation, Overburden Removal |
Hitachi 9271451 track adjuster
EX1200-6 track tensioner assembly
EX1200-7 undercarriage parts
9271451 track adjuster for Hitachi
684 kg track tensioner for EX1200
Replacement track adjuster for Hitachi EX1200
Hitachi mining excavator track tensioner
The Hitachi 9271451 Track Adjuster Assembly (Track Tensioner) is a genuine OEM-specification undercarriage component designed for the Hitachi EX1200-6 and EX1200-7 mining excavators. This track adjuster is a critical component that maintains proper tension in the track chain, ensuring optimal undercarriage performance and preventing track derailment.
The EX1200-6 and EX1200-7 are large mining excavators used in surface mining, heavy excavation, and overburden removal. The track adjuster uses hydraulic pressure to maintain consistent track tension, compensating for wear and thermal expansion during operation.
| Feature | Benefit |
|---|---|
| Hydraulic Track Tensioning | Maintains consistent track tension automatically |
| High-Strength Construction (684 kg) | Built for extreme mining conditions |
| Sealed Design | Prevents contamination and retains lubrication |
| EX1200 Optimized | Specifically engineered for EX1200-6 and EX1200-7 |
| Direct OEM Replacement | Guaranteed fit and performance |
| Heavy-Duty Seals | Extended service life in abrasive conditions |
| Specification | Detail |
|---|---|
| Machine Models | Hitachi EX1200-6, EX1200-7 |
| Machine Type | Large Mining Excavator |
| Operating Weight | ~110,000 - 120,000 kg |
| Bucket Capacity | ~6.0 - 8.0 m³ |
| Engine Power | ~600-700 HP |
| Position | Track tensioning system |
| Component | Part Number | Description |
|---|---|---|
| Idler | Various | Front idler assembly |
| Track Assembly | Various | Complete track system |
| Track Roller | Various | Bottom/top rollers |
| Sprocket | Various | Drive sprocket |
Lifting Requirement: Due to weight (684 kg), specialized lifting equipment is required
Grease/Hydraulic Pressure: Follow Hitachi OEM specifications for proper pressure settings
Track Tension: Adjust to maintain proper track sag (typically 2-3% of center distance)
Regular Inspection: Check for leaks, damage, and proper tension periodically
Seal Inspection: Inspect seals for damage or leakage
Replacement: Replace if leaking, damaged, or unable to maintain proper tension
| Condition | Action |
|---|---|
| Proper tension maintained | Normal operation |
| External leakage | Replace seals or assembly |
| Unable to maintain tension | Replace adjuster |
| Visible damage or deformation | Replace immediately |
| Corrosion or pitting | Replace adjuster |
| Item | Detail |
|---|---|
| Part Number | 9271451 |
| Type | Track Adjuster Assembly / Track Tensioner |
| Weight | 684 kg per piece |
| Compatibility | Hitachi EX1200-6, EX1200-7 |
| Packaging | Individual crate |
Note: This is a track adjuster assembly for the Hitachi EX1200-6 and EX1200-7 mining excavators. Due to its significant weight (684 kg), specialized lifting equipment and professional installation are required. Verify machine serial number and undercarriage configuration before ordering. Proper track tension is critical for optimal undercarriage life and machine performance.
