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Lubrication failures cause more servo press downtime than any other single factor. They are almost entirely preventable.
## Two Separate Systems
Centralized grease system: lubricates slide gibs, guide pins, die cushion components. Forced oil circulation system: lubricates main gear, eccentric bearings, connecting rod bearings.
## Centralized Grease System Failures
### Blocked Distribution Lines
The most common failure. Grease hardens in lines over time. Detection: check each point with a grease gun after the automatic cycle. Fix: blow out with compressed air. Prevention: use NLGI 1 or 2 grease as specified in the manual.
### Pump Timer Drift
Verify timer setting against the manual every 6 months.
### Low Grease Level
Check reservoir level weekly. Do not rely only on the low-level switch.
## Forced Oil System Failures
### Filter Clogging
Replace every 6 months or when differential pressure indicator shows red.
### Oil Cooler Fouling
Clean fins with compressed air every 3 months. Normal oil temperature: 40-60C. Above 70C investigate cooling.
### Oil Contamination
Milky appearance indicates a cooler leak. Change oil annually regardless of condition.
## Annual Lubrication Audit
Verify every lubrication point is receiving lubricant. Check all line connections for leaks. Verify pump output volume. Review oil analysis trends.