Pneumatic fluid power — Compressed-air lubricators — Part 1: Main characteristics to be included in supplier's literature and product-marking requirements
1Key Takeaways
This document specifies which characteristics of compressed-air lubricators are to be included in the supplier’s literature. It also specifies product-marking requirements for lubricators. This document is applicable to compressed-air lubricators constructed from light alloys (e.g. aluminium), zinc die-cast alloys, bra…
2Expert Interpretation
This article provides an in-depth interpretation of the ISO 6301-1:2017 international standard for compressed air lubricators, covering core content such as technical characteristics, product marking requirements, and test methods. It also provides selection guidance and implementation recommendations for pneumatic lubricators with a maximum rated pressure of up to 1600 kPa.
Interpretation of the Standard's Core Content
This standard applies to the technical documentation specifications for suppliers of compressed air lubricators, explicitly requiring product marking of key parameters such as rated pressure (≤1600kPa) and temperature range (≤80°C). Materials covered include common industrial materials such as aluminum alloy, zinc alloy, brass, steel, and plastic.
Analysis of key technical requirements
| Technical dimensions | Non-circulating lubricator | Circulating lubricator |
|---|---|---|
| Lubrication principle | All lubricant is injected into the air flow | Part of the lubricant is recycled |
| Pressure drop test | Needs to be measured at three pressure levels of 250/630/1000kPa | |
| Minimum operating flow | Based on 630kPa for test (or rated pressure) | |
Product Marking Specifications
Chapter 6 of the standard requires the marking of 7 key information:
- Manufacturer's name/trademark
- Model specification
- Rated pressure value
- Maximum operating temperature
- Flow direction indicator
- Lubricating oil level scale (if applicable)
- Production date (can be in code form)
Standard Evolution and Industrial Value
As the fourth edition of the standard (replacing the 2009 edition), the main technical updates include:
- Expanding the material scope of application to engineering plastics
- Refining the graphical reporting requirements for pressure drop test
- Adding a new clause for lubricant compatibility instructions
In pneumatic systems, compressed air lubricators can reduce component wear by 40-60%, directly affecting the service life of the system.
Implementation Recommendations
Selection Notes
When selecting according to ISO 6301-2 test data, special attention should be paid to the following:
- Whether the actual working pressure is below 70% of the rated pressure
- Whether the ambient temperature exceeds the material tolerance range
- Whether the minimum flow rate meets the system's low-load operating conditions
Maintenance Points
Recommendations in Chapter 5 of the standard:
- Use the specified type of lubricant
- Regularly check the oil atomization effect
- Avoid the use of corrosive cleaning agents