ISO/TS 24137:2023 PDF

Name: ISO/TS 24137:2023 — Plain bearings — Surface modification by press fitting solid lubricants combined with micro dimple processing
SKU: ISO/TS 24137:2023
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Plain bearings — Surface modification by press fitting solid lubricants combined with micro dimple processing

Название (английский):

ISO/TS 24137:2023

Plain bearings — Surface modification by press fitting solid lubricants combined with micro dimple processing

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 28 февраля 2023 г.
Издание:: ISO TS 24137 edition 1 version 1
ICS:: 21.100.10

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Описание (английский):

This document specifies the method of surface modification that improves the friction characteristics of plain bearings, by press fitting a solid lubricant onto the bearing metal surface mechanically in combination with processing a lot of micro dimples on the surface.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/TS 24137:2023 - "Plain bearings - Surface modification by press fitting solid lubricants combined with micro dimple processing" specifies a practical, mass-production-capable method to improve the friction characteristics of plain bearing surfaces. The Technical Specification defines a combined process in which a solid lubricant is mechanically press-fitted into a metal surface that has been textured with many micro dimples, producing a thin (micrometer-scale) modified layer firmly bonded to the base metal.

Key Topics and Requirements

Scope: Surface modification method for plain bearings to enhance friction and wear performance. Target materials are metallic bearing substrates (e.g., steel, aluminium alloy, titanium alloy), especially those with high work-hardening properties.

Solid lubricants: Typical candidates include molybdenum disulfide (MoS2), graphite, and carbon black, chosen by application (high load, high temperature, dry/low-humidity environments).

Process steps:

Formation of micro dimples (surface texturing)
Supply/coating of solid lubricant (suspended in a solvent and applied to the dimpled surface)
Press fitting of the lubricant into the dimples (mechanical smoothing/embedding)

Dimple formation methods:

Shot peening (including hybrid media pre-coated with lubricant), with recommended shot diameter ~5× expected dimple diameter, media hardness ≈ 70% of target material, projection flow ≈ 5 g/s and projection pressure ≈ 0.3 MPa. Use Almen strips/arc height to evaluate intensity.
Interrupted micro cutting for controlled dimple patterns, pitch and depth-suitable for internal surfaces and high homogeneity.

Press fitting methods: Roller burnishing is recommended to smooth the plateau and press-fit lubricant; suggested contact surface pressure ≈ 1.5–2.5 GPa for aluminium, steel and titanium alloys.

Safety note: Solvents used to carry solid lubricant are volatile and flammable - follow GHS labelling and handling guidance.

Performance data: Annex A shows ball-on-disc friction testing with MoS2-treated aluminium alloy demonstrating lower friction and longer life compared with untreated surfaces.

Applications

Manufacturers of plain bearings, bushings and sliding components seeking improved dry or boundary lubrication performance.

Tribology and surface-engineering teams in automotive, aerospace, industrial machinery, and vacuum or high-temperature systems.

Processes suited for mass production where adhesion and longevity of solid-lubricant films are critical and where simple, equipment-light methods are preferred.

Related Standards

Shot peening standards referenced for general procedure: ISO 12686 and ISO 26910-1.

For terminology and broader plain-bearing standards, consult ISO/TC 123 outputs and ISO Online Browsing Platform.

Keywords: ISO/TS 24137:2023, plain bearings, surface modification, press fitting solid lubricants, micro dimple processing, molybdenum disulfide, shot peening, roller burnishing, tribology.

ISO/TS 24137:2023 PDF

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications

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