ISO 8399-2:1998 PDF

Name: ISO 8399-2:1998 — Aerospace — Accessory drives and mounting flanges (Metric series) — Part 2: Dimensions
SKU: ISO 8399-2:1998
Price: 25 EUR
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Aerospace — Accessory drives and mounting flanges (Metric series) — Part 2: Dimensions

Название (английский):

ISO 8399-2:1998

Aerospace — Accessory drives and mounting flanges (Metric series) — Part 2: Dimensions

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 3 декабря 1998 г.
Издание:: ISO IS 8399 edition 1 version 1
ICS:: 49.035

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Язык документа:

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Цена:165 €

Описание (английский):

This part of ISO 8399 specifies the dimensions of couplings for accessory drives and mounting flanges with quick attach/detach provisions primarily intended for use in aircraft gearboxes and engine accessories.

Abstract

Overview - ISO 8399-2:1998 (Aerospace accessory drives & mounting flanges - Dimensions)

Key topics and technical requirements

Scope and configuration: Dimensioned layouts, figures and tables specify the geometry for accessory flanges and mating engine/gearbox flanges (spigots, collars, sockets).
Spigot and sealing: Detailed spigot dimensions and sealing groove guidance. Radial compression and assembly stretch assumptions are based on nitrile, fluorocarbon and silicone elastomers with ~80% stretch capability and 70–80 IRHD hardness. Groove modifications are recommended if other elastomers are used.
Locating features: Locating pin and socket dimensions are provided for accurate flange alignment, including transfer tube and transfer-tube seal arrangements for larger spigot sizes.
O-ring specification: Transfer-tube O-rings specified with nominal inside diameter 6.9 −0.14 mm and cross-section 1.8 −0.08 mm (aligned with ISO 3601 series).
Involute splines: Internal and external spline characteristics follow ISO 4156 - number of teeth and module listed in tables; pressure angle 30°; fillet root; tolerance class 5; fit class H/d; side fit. Separate dimensions are given for lubricated and unlubricated splines.
Surface finish & tolerances: Surface roughness per ISO 4287 and ISO 1302 (values in figures), with permission to double roughness for aluminium sealing surfaces after treatment. Limit deviations and fits reference ISO 286-2; general tolerances default to ISO 2768-m where not otherwise specified.
Documentation: Figures and tables supply the specific numeric dimensions, control diameters and inspection notes required for manufacturing and quality control.

Applications and who uses it

ISO 8399-2 is applied across the aerospace supply chain where standardized accessory drive interfaces are critical:

Aircraft and engine OEMs specifying accessory drive/mounting flanges
Accessory manufacturers (pumps, generators, starters) for mechanical interface design
Gearbox and accessory mounting designers ensuring interchangeability
Manufacturing, inspection and quality teams using the dimensional tables and surface/tolerance requirements
MRO and certification engineers verifying compliant replacement parts

Related standards

ISO 8399-1:1998 (Design criteria)
ISO 4156 (Involute splines)
ISO 286-2 (Limits and fits)
ISO 3601-1 (O-rings)
ISO 4287 / ISO 1302 (Surface texture)
ISO 2768-1, ISO 13715

Keywords: ISO 8399-2, accessory drives, mounting flanges, aerospace couplings, spigot dimensions, quick attach/detach, involute splines, O-ring, surface roughness, metric series.

Технические детали

Технический комитет: ISO/TC 20 - Aircraft and space vehicles
SKU: ISO 8399-2:1998

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ISO 8399-2:1998 PDF

Abstract

Overview - ISO 8399-2:1998 (Aerospace accessory drives & mounting flanges - Dimensions)

Похожие стандарты

Key topics and technical requirements

Applications and who uses it

Related standards

Технические детали

ISO 8399-1:1998

Aerospace — Accessory drives and mounting flanges (Metric series) — Part 1: Design criteria

ISO 3601-1:2012/Amd 1:2019

Fluid power systems — O-rings — Part 1: Inside diameters, cross-sections, tolerances and designation codes —…

BS ISO 4156-2:2021

Straight cylindrical involute splines. Metric module, side fit. Dimensions.

ISO 4287:1997/Amd 1:2009

Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms, definitions and surface t…

ISO 1302:1992

Technical drawings — Method of indicating surface texture

ISO 286-2:2010/Cor 1:2013

Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 2: Tables of…

SIST ISO 2768-1:1999

General tolerances -- Part 1: Tolerances for linear and angular dimensions without individual tolerance indic…