Pneumatic Actuator Lubrication Guide
Optimal maintenance intervals and best practices for double-acting actuators
1. Standard Lubrication Intervals
Clean environments (manufacturing plants) with moderate cycles (10–20/hour):
Every 3–6 months or 50,000–100,000 cycles
Dusty, humid, or high-temperature settings (construction, foundries):
Every 1–3 months or 20,000–50,000 cycles
Robotics/packaging machinery (100+ cycles/hour):
Every 1–2 weeks or 100,000–200,000 cycles
2. Key Factors Influencing Frequency
- Mineral oils: Every 3 months
- Synthetic (PTFE): 6–12 months
Unfiltered air with moisture/particulates:
50% shorter intervals
- >8 bar: 20–30% more frequent
- >80°C or <-20°C: Monthly
3. Signs of Inadequate Lubrication
- Sticky piston movement
- Squeaking/grinding noises
- Air leakage from seals
- Slower response times
4. Lubrication Methods
FRL units for continuous oil mist (high-cycle systems)
Food-grade/synthetic oil via port plugs
- NBR seals: Mineral oil
- FKM seals: Synthetic oil
5. Special Cases
PTFE-based (food processing):
No lubrication needed but quarterly inspections required
6. Maintenance Records
Track dates, cycles, and issues to refine intervals (e.g., reduce from 3 to 1.5 months if seal wear occurs in dusty environments).
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