GOST 32769-2014 PDF

Full title and description

GOST 32769-2014 — Rolling bearings. Taper bearing unit for rolling stock axle boxes. Specification. (Russian title: Подшипники качения. Узлы подшипниковые конические букс железнодорожного подвижного состава. Технические условия.) The standard establishes technical requirements, dimensional and performance characteristics, testing, marking and documentation for tapered bearing units used in axle-box (journal) assemblies of railway rolling stock.

Abstract

This interstate (GOST) standard specifies the technical conditions for tapered rolling-bearing units intended for use in axle-boxes (wheelset bearing housings) of railway vehicles. It covers designations, normative references, technical requirements for materials and manufacture, acceptance and routine tests, inspection criteria, marking, packaging and accompanying documentation. The document includes Amendment No.1 and subsequent editorial corrections adopted by the interstate standardization bodies.

General information

• Status: Active / in force (interstate standard — действует).
• Publication date: Registered 30 May 2014; published/issued 12 Jan 2015; date of introduction (into effect) 01 July 2015.
• Publisher: Adopted as a межгосударственный стандарт by the Interstate Council for Standardization, Metrology and Certification (EASC); implemented on the territory of the Russian Federation via the Federal Agency on Technical Regulating and Metrology (Rosstandart).
• ICS / categories: 21.100.20 — Rolling bearings (mechanical systems and devices / bearings).
• Edition / version: Original designation GOST 32769-2014 (effective 2015) with Amendment No.1 introduced 25 Feb 2017; later editorial corrections and amendments referenced in the standard record.
• Number of pages: 37 pages (standard text as published in PDF).

Scope

Applies to tapered bearing units intended for use in wheelset axle-box (bearing) assemblies of railway rolling stock. The standard sets requirements for design and constructive parameters, material properties, manufacture and heat treatment, inspection and acceptance tests, allowable defects and criteria for repair or rejection, marking, documentation and packaging for such bearing units. It is intended for use by manufacturers, testing laboratories, operators and conformity assessment bodies in the countries that adopt the interstate standard.

Key topics and requirements

• Definitions and terminology for tapered bearing units specific to railway axle-box applications.
• Dimensional and geometric tolerances for bearing components and assemblies.
• Material and heat-treatment requirements for rings, rollers and separators (resistance, hardness, metallurgical quality).
• Acceptance, routine and type-test methods (mechanical tests, run-in, noise/temperature criteria, lubricant and contamination limits).
• Criteria for detection of defects and conditions requiring repair or rejection (cracks, spalling, corrosion, excessive wear, cage damage).
• Marking, documentation (passport/certificate), packaging and storage requirements suitable for railway service conditions and climatic categories.

Typical use and users

Used by railway rolling-stock manufacturers, bearing and axle-box component producers, maintenance and overhaul depots, test laboratories, procurement and quality assurance teams, and regulatory/conformity assessment bodies in countries adopting interstate GOST standards. Typical applications include new-build wheelset assemblies, overhaul/repair of axle-boxes and procurement specifications for bearings for freight and passenger rolling stock.

Related standards

Cross-references and normative links in the standard include other GOSTs and ISO-based documents relevant to bearings and materials (examples cited in the text: GOST 18854-2013, GOST 18855-2013, GOST 15150-69, GOST 2477-2014, plus general test and reliability standards). The document is part of the family of rolling-bearing standards under ICS 21.100.20 and is commonly used alongside related national and international bearing standards when specifying railway bearing units.

Keywords

tapered bearing unit; axle box; wheelset bearing; rolling bearings; railway rolling stock; GOST 32769-2014; technical conditions; acceptance tests; bearing units; axle-box assembly.

FAQ

Q: What is this standard?

A: GOST 32769-2014 is an interstate (GOST) technical standard that specifies technical conditions and requirements for tapered rolling-bearing units used in axle-boxes (wheelset bearing housings) of railway rolling stock.

Q: What does it cover?

A: It covers definitions, design and dimensional requirements, material and heat-treatment criteria, inspection and test methods, criteria for defects and rejection, marking, documentation and packaging for tapered bearing units intended for railway axle-box applications.

Q: Who typically uses it?

A: Bearing manufacturers, railway OEMs, maintenance and overhaul facilities, test laboratories, procurement and QA teams, and conformity assessment bodies in states applying interstate GOST standards. (xn----7sbhaldrafo0catmhegeecb4a9nme.xn--p1acf)

Q: Is it current or superseded?

A: As published, GOST 32769-2014 is active (in force). It was brought into effect 01 July 2015 and has at least one formal amendment (Amendment No.1 introduced 25 February 2017) and subsequent editorial updates; it is not shown as superseded in the official record. Users should check the national standardization body or the EASC register for the latest status and any further amendments.

Q: Is it part of a series?

A: It belongs to the broader body of standards on rolling bearings (ICS 21.100.20) and references other GOST/ISO bearing and material standards; it is used in conjunction with related railway-technical GOSTs and bearing standards for complete specification and conformity assessment.

Q: What are the key keywords?

A: Taper bearing unit, rolling bearings, axle box, wheelset, railway, technical conditions, GOST 32769-2014, acceptance tests, marking, bearing unit specification.