Overview
ISO 11007-1:2021/Amd 1:2023 is an important amendment to the international standard governing the rust-prevention characteristics of lubricating greases under dynamic wet conditions. Developed by the International Organization for Standardization (ISO) Technical Committee ISO/TC 28, this amendment specifically addresses the use of test bearings in evaluating corrosion resistance. The standard is critical for manufacturers and users of petroleum products and lubricants, ensuring lubricating greases meet stringent performance criteria to prevent rust and enhance equipment reliability.
Key Topics
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Rust-prevention testing for lubricating greases
Focuses on assessing the effectiveness of greases in protecting metal surfaces from corrosion during dynamic wet conditions, which simulate real-world operational environments.
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Test bearings specification
Introduces the use of double row self-aligning bearings conforming to DIN 630 standards, such as SKF 1306K/236725 with steel cages. These bearings are specially inspected and treated with waxy-type corrosion inhibitors, excluding chemical rust inhibitors to avoid test bias.
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Elimination of chemical rust inhibitors
Highlights the importance of using bearings free from chemical rust inhibitor preservatives after washing to ensure accuracy in rust-prevention testing.
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Normative changes
Updates normative references, including adding DIN 630 for test bearings and removing ISO 15 related to rolling bearing dimensions.
Applications
The standard and its amendment serve several practical purposes across industries handling lubricating greases and petroleum-based lubricants:
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Quality control
Enables grease manufacturers to systematically evaluate and certify the rust-prevention performance of their products, ensuring compatibility with bearings and machinery exposed to wet and dynamic conditions.
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Product development
Assists R&D teams in designing greases with improved corrosion resistance by providing reliable testing methods using standardized bearings.
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Equipment maintenance
Helps maintenance engineers select appropriate lubricating greases to minimize rust-related failures and extend service life of rolling bearings and rotating machinery.
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Industrial compliance
Supports meeting regulatory and market requirements concerning lubricant performance and machinery reliability, which is increasingly important in sectors like automotive, manufacturing, and energy.
Related Standards
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DIN 630 – Rolling bearings - Self-aligning ball bearings - Double row with cylindrical or tapered bore
Specifies the type of bearings required for testing as per the latest amendment.
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ISO 15 – Rolling bearings - Radial bearings - Boundary dimensions, general plan (withdrawn from references in this amendment)
Previously referenced for bearing dimensions but now replaced by DIN 630 in the context of this standard.
Practical Value
ISO 11007-1:2021/Amd 1:2023 provides an updated framework that ensures accurate and consistent rust-prevention testing of lubricating greases. By standardizing the test bearings and addressing potential biases caused by residual chemical rust inhibitors, this amendment enhances the reliability of corrosion resistance evaluation. This leads to better grease formulation, improved machinery durability, and reduced downtime in environments where wet and dynamic conditions are prevalent.
For stakeholders in the petroleum products and lubricants industry, adherence to this updated standard is essential for maintaining product quality, optimizing lubricant performance, and supporting sustainable maintenance practices.
Keywords: rust-prevention characteristics, lubricating greases, dynamic wet conditions, test bearings, ISO 11007-1 amendment, petroleum lubricants, corrosion resistance testing, DIN 630 bearings, grease quality control.
Open preview (PDF)Petroleum products and lubricants — Determination of rust-prevention characteristics of lubricating greases — Part 1: Dynamic wet conditions — Amendment 1: Test bearings