ISO 10441-2007 PDF

Full title and description

ISO 10441:2007 — Petroleum, petrochemical and natural gas industries — Flexible couplings for mechanical power transmission — Special-purpose applications. This International Standard specifies requirements for flexible couplings used to transmit power between rotating shafts in special-purpose applications typical of the petroleum, petrochemical and natural gas industries.

Abstract

ISO 10441:2007 covers design, materials of construction, manufacturing quality, inspection and testing of special‑purpose flexible couplings (gear, metallic flexible‑element, quill‑shaft and torsionally resilient types). It specifies performance and mechanical requirements so couplings can accommodate parallel (lateral) offset, angular misalignment and axial displacement without imposing unacceptable mechanical loads on connected machines; it excludes clutches, hydraulic, eddy‑current, rigid, radial‑spline, chain and bellows couplings.

General information

• Status: Published (International Standard; last reviewed and confirmed 2021).
• Publication date: March 2007 (corrected French version April 2009).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 75.180.20 (Processing equipment / Couplings).
• Edition / version: Edition 2 (2007).
• Number of pages: 56 (ISO published PDF pagination).

Scope

Applies to couplings used for transmission of power between rotating shafts in special‑purpose applications found in petroleum, petrochemical and natural gas installations — typically large and/or high‑speed machines required to operate continuously for extended periods and often unspared. The standard may be applied by agreement to other services; it does not specify selection criteria for coupling type.

Key topics and requirements

• Covered coupling types: gear couplings, metallic flexible‑element couplings, quill‑shaft couplings and torsionally resilient (damped or resilient) couplings.
• Mechanical performance: accommodation of parallel (lateral) offset, angular misalignment and axial displacement without unacceptable loading of connected machinery.
• Design and materials: requirements for materials, construction and design factors including fatigue and safety factors appropriate for continuous, critical service.
• Manufacturing quality, inspection and testing: specified checks and test procedures to verify conformity (including informative and normative annexes with examples, data sheets and test procedures).
• Exclusions and limits: does not apply to clutches, hydraulic, eddy‑current, rigid, radial spline, chain or bellows type couplings, nor does it prescribe selection criteria for specific applications.

Typical use and users

Used by mechanical, rotating‑equipment and reliability engineers, OEMs and coupling manufacturers, procurement and inspection teams, and maintenance staff specifying or verifying couplings for critical rotating assets in refineries, gas processing plants, compressor stations and petrochemical installations where failures would threaten continuous operation or safety.

Related standards

ISO 10441:2007 supersedes ISO 10441:1999. It is published under the remit of ISO/TC 67/SC 6 (petroleum and natural gas industries — rotating equipment). Normative and informative references cited in the standard include general ISO machine‑engineering standards (e.g., ISO 262, ISO 286‑2) and industry/sector standards (ANSI/AGMA coupling standards and other ISO petroleum equipment standards). Users commonly consult this standard alongside other petroleum industry and rotating‑equipment standards (e.g., ISO 10438, ISO 13691 and related TC67 deliverables) when creating complete specifications.

Keywords

flexible coupling, gear coupling, metallic flexible element, quill shaft, torsionally resilient coupling, misalignment, axial displacement, petroleum industry, petrochemical, gas industry, coupling testing, coupling inspection.

FAQ

Q: What is this standard?

A: ISO 10441:2007 is an international standard specifying technical requirements for flexible couplings used in special‑purpose applications in the petroleum, petrochemical and natural gas industries.

Q: What does it cover?

A: It covers coupling types (gear, metallic flexible element, quill shaft and torsionally resilient), design and materials, manufacturing quality, inspection and testing, and required mechanical performance to handle misalignments and axial displacement. It excludes several coupling types (e.g., clutches, hydraulic, eddy‑current, rigid, radial spline, chain, bellows).

Q: Who typically uses it?

A: Mechanical and rotating‑equipment engineers, coupling manufacturers and OEMs, procurement and inspection teams, and maintenance/reliability personnel in oil & gas and petrochemical sectors.

Q: Is it current or superseded?

A: ISO 10441:2007 (Edition 2) superseded ISO 10441:1999. The ISO record shows the 2007 edition as published and last reviewed/confirmed in 2021; the document remains current but is subject to periodic systematic review. Users should check the ISO catalogue or their national standards body for any updates or withdrawals after the review date.

Q: Is it part of a series?

A: It is part of the portfolio of ISO/TC 67 (petroleum, petrochemical and natural gas industries) standards addressing rotating equipment, lubrication, seals and related items; users often pair it with other TC67 standards when specifying equipment.

Q: What are the key keywords?

A: Flexible couplings, gear coupling, torsionally resilient coupling, quill shaft, misalignment, axial displacement, coupling inspection, petrochemical, oil and gas.