ISO 6301-2:2018

Overview

ISO 6301-2:2018 is an international standard developed by ISO that specifies test methods to determine the main characteristics of compressed-air lubricators used in pneumatic fluid power systems. This part of the ISO 6301 series complements ISO 6301-1 by defining standardized procedures to verify and present test results for lubricators, ensuring data consistency in supplier documentation. These lubricators introduce the necessary quantity of lubricant into compressed air streams to enhance system performance and longevity.

The standard applies tests focused on verifying rated pressure, airflow rates, minimum operating airflow, and reservoir capacity, offering a robust framework for comparing different lubricator designs. Importantly, these methods facilitate accurate product information for users and help optimize application within compressed-air systems.

Key Topics

• Test Procedures for Rated Pressure Verification
  ISO 6301-2 defines procedures to test lubricator pressure resistance, with pressures held up to four or five times the proposed rated pressure depending on materials. The test monitors for leaks, cracks, or failures ensuring product safety and reliability.

• Airflow Rate Testing
  The document outlines how to measure pressure drops and airflow rates through lubricators accurately, using standard test circuits compliant with ISO 6358-1. Data is recorded at various inlet pressures (up to 10 bar or rated pressure) to assess performance under different operating conditions.

• Minimum Operating Airflow Determination
  Two test options measure lubricant output at minimum airflow rates to verify lubricator efficiency. The methods include monitoring oil drop delivery in sight domes and weighing lubricant consumption, adjusting for recirculating and non-recirculating lubricators.

• Reservoir Capacity Measurement
  Procedures are included to quantify lubricator reservoir capacities, ensuring proper lubricant volume listings in technical documentation.

• Standardized Presentation of Test Results
  Results are to be presented in supplier literature uniformly, allowing easier comparison and aiding in the proper selection and application of lubricators within compressed-air systems.

Applications

ISO 6301-2:2018 serves multiple practical purposes in industries utilizing pneumatic fluid power, including:

• Product Development and Quality Verification
  Manufacturers use these test methods to verify product safety and performance claims prior to market release, ensuring compliance with international standards.

• Procurement and Supplier Comparison
  Standardized test data helps procurement specialists compare lubricators objectively, choosing the best fit based on validated characteristics like flow rates and pressure capabilities.

• Maintenance and System Optimization
  End-users and maintenance teams can reference standardized performance data to select lubricators that meet system requirements, improving equipment longevity and operational efficiency.

• Technical Documentation and Marketing
  Engineers and technical writers rely on ISO 6301-2 to frame consistent supplier documentation that transparently reflects product capabilities.

Related Standards

• ISO 6301-1:2017 – Main characteristics and product-marking requirements for compressed-air lubricators.
• ISO 6358-1:2013 – Test methods for determining the flow-rate characteristics of pneumatic components.
• ISO 2944 – Standard definitions for nominal pressures in fluid power systems.
• ISO 3448 – Industrial liquid lubricants viscosity classification.
• ISO 1219-1 – Graphical symbols and circuit diagrams for fluid power systems.
• ISO 5598 – Vocabulary for fluid power systems and components.

Summary

ISO 6301-2:2018 is essential for standardizing test methodologies and presentation of data related to compressed-air lubricators in pneumatic fluid power systems. By defining clear, repeatable test procedures, it enhances product comparability and reliability, supporting proper lubricator application to optimize system performance. Integrating this standard helps manufacturers, suppliers, and users align on product expectations, ultimately advancing safety, quality, and operational efficiency in compressed-air system lubrication.