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STANDARD 10317
Second edition
2008-11-15
Rolling bearings — Tapered roller
bearings — Designation system
Roulements — Roulements à rouleaux coniques — Système de
désignation
Reference number
ISO 10317:2008(E)
©
ISO 2008
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ISO 10317:2008(E)
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ISO 10317:2008(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 10317 was prepared by Technical Committee ISO/TC 4, Rolling bearings, Subcommittee SC 9, Tapered
roller bearings.
This second edition cancels and replaces the first edition (ISO 10317:1992), which has been technically
revised.
© ISO 2008 – All rights reserved iii
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INTERNATIONAL STANDARD ISO 10317:2008(E)
Rolling bearings — Tapered roller bearings — Designation
system
1 Scope
This International Standard establishes a system for the designation of metric size tapered roller bearings
produced in accordance with ISO 355.
The system covers designations for single-row bearings, double-row bearings, and bearings with flanged
outer rings. It also establishes designations for separate inner subunits (inner ring, tapered rollers and cage)
and outer rings of such bearings.
This International Standard does not apply to bearings or inner subunits or outer rings which in any respect
deviate from ISO 355.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 355:2007, Rolling bearings —Tapered roller bearings — Boundary dimensions and series designations
ISO 492, Rolling bearings — Radial bearings — Tolerances
ISO 5593, Rolling bearings — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5593 apply.
4 Designation structure
4.1 Principles of the designation system
The designation structure is a system of groups of alphabetical and/or numerical symbols based on the
standard pattern shown in Figure 1. Each group is called a section. The symbols used in the different sections
are as specified in Clauses 5 to 10.
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ISO 10317:2008(E)
Figure 1 — Designation structure
4.2 Bearing designations
The designation of a complete single
...