SIST ISO 6526:2020 PDF

Name: SIST ISO 6526:2020 — Plain bearings - Pressed bimetallic half thrust washers - Features and tolerances
SKU: SIST ISO 6526:2020
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Plain bearings - Pressed bimetallic half thrust washers - Features and tolerances

Название (английский):

SIST ISO 6526:2020

Plain bearings - Pressed bimetallic half thrust washers - Features and tolerances

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 4 марта 2020 г.
ICS:: 21.100.10
Технический комитет:: ISEL - Mechanical elements

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Описание (английский):

ISO 6526:2017 specifies the main features and tolerances for pressed bimetallic half thrust washers having an outside diameter up to 160 mm. NOTE 1 All the linear dimensions and tolerances are expressed in millimetres. NOTE 2 The main dimensions for the half thrust washers are not the subject of this document.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты SIST

Overview

ISO 6526:2017 specifies the features and tolerances for pressed bimetallic half thrust washers (plain bearings) with an outside diameter up to 160 mm. All linear dimensions and tolerances are expressed in millimetres. The standard defines geometric and manufacturing tolerances (diameters, heights, total thickness, lugs, grooves, fillets, chamfers, flatness), but does not prescribe main nominal dimensions or materials and makes no general specification for surface roughness.

Key topics and requirements

Scope limit: applies to pressed bimetallic half thrust washers with outside diameter ≤ 160 mm.

Units: all linear dimensions in millimetres.

General tolerances: unspecified linear dimensions ±0.25 mm; angular ±5°.

Diameter and height tolerances: specific tolerances for outside (D) and inside (d) diameters and for heights (H, F) are tabulated. Example: outside diameter tolerance is −0.25 mm for D ≤ 120 mm.

Thickness (eT): preferred total thickness values (e.g., 1.75, 2.0, 2.5, 3.0 mm) with corresponding negative tolerances and recommendations for oversizes.

Geometric relations: the difference D − d shall be greater than 7 · eT (outside minus inside diameter greater than seven times total thickness).

Locating lug: dimensions for lug width (A), lug length (E) and notch recess (JS13 per ISO 286‑2) are specified; lug may be offset to prevent incorrect assembly.

Grooves: groove width, back-wall thickness, and radial position tolerances are defined (including positional tolerances increasing with diameter).

Fillets and chamfers: maximum radii and chamfer widths for lug, joint faces and sliding surfaces; joint-face relief depth limits (≤ 30 % of total thickness) and relief angle β ≤ 30°.

Flatness: half washers must slide between parallel plates set to eT + p, with p specified by diameter range (e.g., p = 0.10 mm for D ≤ 80 mm).

Surface roughness: not specified due to material variability.

Applications

ISO 6526:2017 is used where pressed bimetallic half thrust washers serve as thrust plain bearing elements in rotating and sliding assemblies. Typical applications include:

Engine and gearbox thrust guidance

Transmission assemblies and rotating machinery

Repair, remanufacture and replacement of standard thrust washer components

SIST ISO 6526:2020 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications

Who uses this standard

Related standards

Технические детали

ISO 6526:2017

Plain bearings — Pressed bimetallic half thrust washers — Features and tolerances

ISO 286-2:2010/Cor 1:2013

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