Used excavator buyers obsess over the hour meter. The truth: hours alone are a weak signal. A 12,000-hour machine with documented service history can be safer than a 4,000-hour machine that's been neglected.
Hour-tier risk framework
| Hours | Risk level | What to inspect |
|---|---|---|
| Under 5,000 | Low | Standard inspection — like-new |
| 5,000-10,000 | Moderate | Hydraulic pump pressure test, undercarriage measurement |
| 10,000-15,000 | Significant | Add cylinder drift test, engine compression |
| 15,000-20,000 | High | Major component overhaul likely needed within 2 years |
| Over 20,000 | Very high | Buy only for parts or full rebuild |
What to ask the seller
- Complete service-record book with dates and hour readings
- Fluid analysis history (oil, hydraulic, coolant)
- Any major component replacements (pumps, motors, cylinders)
- Operating environment history (mining vs construction vs idle)
- Reason for sale — fleet refresh vs problem machine