GOST R 51220-98 PDF

Full title and description

GOST R 51220-98 — "Transmission tooth gears of the traction main railway stock. Raw pieces. Technical specifications". The standard specifies technical requirements for gear-wheel blanks (raw pieces) intended for manufacture of transmission tooth gears used in traction rolling stock (diesel locomotives, electric locomotives and motor-rolling stock of mainline railways).

Abstract

This national Russian standard (GOST R) defines the scope, material and manufacturing forms (forging, hot closed-die stamping, rolling), acceptance and inspection requirements, mechanical and chemical characteristics, marking, packaging and documentation for unmachined blanks intended for railway traction gear wheels. It is intended to ensure interchangeability, safety and suitability of blanks for subsequent finishing and heat treatment in gear manufacture.

General information

• Status: In force (standard entered into effect 01 January 2000; listed as действующий / действует in Russian standards databases).
• Publication date: Approved/issued 29 December 1998; introduced (effective) 01 January 2000.
• Publisher: National standards authority / GOST R system (documents are issued under the Russian national standardization system; published and distributed via official GOST/R publishing channels such as Rosstandart / STANDARTINFORM).
• ICS / categories: Railway rolling stock / OKS 45.060 (railway traction stock) — classification for railway equipment and components; related internal codes used in Russian classifiers include 45.060.10 and product group D55.
• Edition / version: GOST R 51220-98 (original designation year 1998; implementation date 2000).
• Number of pages: Approximately 11 pages (typical published text count in commercial and library listings).

Scope

Applies to gear-wheel blanks produced by forging, hot closed-die stamping (hot volumetric stamping) and rolling, supplied as rough (unmachined) cast/forged/rolled blanks and intended for manufacture of toothed wheels used in traction gear sets of mainline diesel and electric locomotives and motor-rolling stock. The standard addresses types of blanks covered, permitted manufacturing methods, acceptance criteria and documentation required at delivery.

Key topics and requirements

• Definitions and classification of blanks for traction gear wheels (forms, sizes, nominal designations).
• Permitted manufacturing processes for blanks: forging, hot closed-die stamping and rolling; requirements for delivered condition (rough, without finish machining).
• Chemical composition and mechanical-property requirements for supplied steels (melt/heat identification, test data and acceptance limits).
• Acceptance, inspection and sampling rules (visual, dimensional, metallurgical and mechanical tests), including required documentation and certificates of conformity.
• Marking, packing and transportation requirements for blanks to preserve traceability and prevent damage during storage/transport.
• Forms and examples of manufacturer quality certificates / delivery documents (recommended certificate formats included in annexes).

Typical use and users

Used by gear and gearbox manufacturers, railway rolling-stock component suppliers, foundries and forges producing blanks for traction gears, quality/inspection laboratories, procurement and engineering departments of locomotive builders and railway workshops engaged in manufacture, repair or overhaul of traction gear sets. Also used by conformity assessment bodies and procurement specialists for technical procurement specifications.

Related standards

Closely related to other GOST / GOST R documents governing gear wheels, gear manufacture and railway rolling-stock components (examples: GOST R 51175-98 — gear wheels for traction transmissions — and later consolidated or updated standards such as GOST 30803-2014 for traction gear wheels). Users should consult adjacent standards for complete specification of finished gear geometry, heat treatment and final inspection requirements.

Keywords

gear wheel blanks; transmission tooth gears; railway traction; traction rolling stock; forging; hot stamping; rolling; acceptance; technical specifications; GOST R 51220-98.

FAQ

Q: What is this standard?

A: GOST R 51220-98 is a Russian national technical standard (GOST R) that sets technical specifications for raw (unmachined) blanks intended for manufacture of transmission tooth gears used in traction rolling stock.

Q: What does it cover?

A: It covers types and forms of blanks, permitted production methods (forging, hot closed-die stamping, rolling), chemical and mechanical requirements, inspection and acceptance rules, marking, packaging and required delivery documentation for gear blanks intended for locomotive and motor-rolling-stock transmissions.

Q: Who typically uses it?

A: Manufacturers of gear blanks (foundries/forges), gear and gearbox producers, locomotive builders and repair workshops, inspection/laboratory personnel, and procurement engineers specifying component supply for railway traction equipment.

Q: Is it current or superseded?

A: Listings in current standards libraries and databases show GOST R 51220-98 as in force with an effective date of 01 January 2000; however, related gear/rolling-stock standards have seen updates and some earlier gear standards have been superseded by later consolidated documents (users should verify current legal/technical status in the Rosstandart registry or an official database before relying on it for compliance).

Q: Is it part of a series?

A: Yes — it belongs to the family of GOST R standards for railway rolling stock components (series covering gear wheels, gear transmissions and other locomotive components). It should be used alongside companion standards that specify finished-gear geometry, heat treatment and test methods.

Q: What are the key keywords?

A: Gear-wheel blanks; transmission gears; traction rolling stock; forging; hot stamping; rolling; acceptance testing; marking; packaging; GOST R.