Overview
ISO 10317:2008/Amd 1:2013 is an internationally recognized amendment to the ISO 10317:2008 standard, focusing on rolling bearings-specifically, single-row tapered roller bearings. Published by the International Organization for Standardization (ISO), this amendment updates the designation system by introducing design variant designations and provides a clear comparison of tolerance class designations for these bearings. The updated standard enhances clarity and consistency in identifying bearing types and tolerance classes, supporting manufacturers, engineers, and quality assurance professionals worldwide.
Key Topics
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Design Variant Designation:
This amendment refines the designation system for single-row tapered roller bearings by defining clear symbols for various design variants, including:
- Single-row bearing (standard)
- Single-row bearing with flanged outer ring
- Double-row bearings with different inner subunits and outer rings featuring or lacking lubrication grooves and holes
- Back-to-back matched pairs with specified spacers and outer ring configurations
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Comparison of Tolerance Class Designations:
Annex A presents a comprehensive comparison table correlating:
- ISO 492 tolerance classes
- The ISO 10317 amendment’s designation symbols
- ANSI/ABMA 19.1 tolerance class designations
This comparison clarifies tolerance classifications across different standards, aiding in international compatibility and standardization.
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Scope of Application:
The Amendment explicitly focuses on single-row tapered roller bearings. It also notes that ISO 492 does not specify tolerances for double-row bearings, emphasizing the importance of adhering strictly to documented tolerance classes for single-row types.
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Updated Tables and Annex:
Key elements include the replacement of Table 2 to incorporate design variant designation details and the addition of Annex A for tolerance comparison, enhancing the standard’s practical usability.
Applications
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Bearing Design and Manufacturing:
Manufacturers use the designation system to categorize and communicate bearing designs accurately, which improves consistency in production, inventory management, and customer communication.
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Quality Control and Compliance:
Engineers and quality assurance teams rely on the clearly defined tolerance class designations to ensure bearings meet specified standards, reducing risk of failure and enhancing reliability in mechanical applications.
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International Trade and Standardization:
The harmonized comparison of tolerance classes promotes smoother international transactions by bridging gaps between ISO and ANSI/ABMA standards, facilitating global sourcing and quality verification.
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Technical Documentation and Training:
The updated designation and tolerance system serve as a reference in technical manuals, training materials, and standardized documentation to educate and guide professionals working with tapered roller bearings.
Related Standards
- ISO 10317:2008 - Original standard on tapered roller bearing designation system, providing the basis for the 2013 amendment.
- ISO 492 - Specifies tolerance classes for roller bearings and is referenced for tolerance comparisons in this amendment.
- ANSI/ABMA 19.1 - North American standard on tapered roller bearing tolerances referenced for comparative analysis in Annex A.
Keywords: ISO 10317 amendment, tapered roller bearings, bearing designation system, tolerance class designation, single-row tapered roller bearing, bearing design variants, ISO standards, bearing tolerance comparison, ANSI/ABMA bearing standards, rolling bearing specifications.
Open preview (PDF)Rolling bearings — Tapered roller bearings — Designation system — Amendment 1: Design variant designation and comparison of tolerance class designations for single-row tapered roller bearings