ISO 10347-1999 PDF

Full title and description

ISO 10347:1999 — Worm gears — Geometry of worms — Name plates for worm gear units, centre distances, information to be supplied to gear manufacturer by the purchaser. This International Standard defines the recommended centre distances for worm gear units and the information that shall be provided on name plates and by purchasers to gear manufacturers to ensure correct manufacture and application of worm gearing.

Abstract

ISO 10347:1999 specifies requirements for durable name plates on worm-gear units (or information to be supplied with open worm gear pairs), gives recommended centre distances (recommended table of distances) and lists the information the purchaser should provide to the gear manufacturer (e.g., centre distance, ratio, serial number, maximum torque, lubricant recommendation). The standard applies to worm gears within a recommended range of centre distances up to about 500 mm.

General information

• Status: Withdrawn (stage: withdrawal of International Standard).
• Publication date: August 1999 (Edition 1, 1999-08).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 21.200 (Gears).
• Edition / version: 1 (1999).
• Number of pages: 5 (ISO published text); some national/adopted versions (for example BSI national adoption) include additional national front matter and run to more pages (e.g., 14 pages in BS adoption).

Scope

Specifies the geometry-related information for worms (as part of worm-gear units), required data for name plates attached to gear units, recommended centre distances to be used when specifying or ordering worm gears, and the information the purchaser should supply to the gear manufacturer so that suitable worm gears can be provided or machined. The scope covers worm gears with centre distances in the recommended range up to approximately 500 mm and applies to enclosed gear units and to open worm gear pairs where centre-distance and machining information are relevant.

Key topics and requirements

• Durable name plate requirements for worm-gear units (one-piece or two-piece plates; attachment by screws, rivets or equivalent durable means).
• Mandatory and recommended name-plate information: maker/supplier identification, serial number, centre distance, gear ratio (or input/output speeds), indication of power reversing, maximum torque (N·m), lubricant recommendation — additional information may be added if desired.
• Recommended table of centre distances (dimension recommendations in millimetres) for selection of standard centres to optimise meshing and operating conditions.
• Information to be supplied by purchaser to manufacturer to ensure correct selection/manufacture: required centre distance, ratio, application data, required performance (torque/power), lubrication and any special mounting or assembly information.
• Cross-references and normative links to other gear standards (vocabulary and cylindrical-gear module standards) for consistent terminology and dimensions.

Typical use and users

Used by gear manufacturers, gearbox designers, machine builders, purchasers specifying worm-gear units, quality and inspection engineers, and standards committees. Typical applications include industrial gearboxes, reduction drives, special-purpose machinery and any application where correct centre distance and name-plate information are needed to ensure fit and function of worm gearing.

Related standards

Standards commonly referenced with or related to ISO 10347:1999 include ISO 54 (Cylindrical gears — Modules), ISO 1122-2 (Vocabulary of gear terms — definitions related to worm gear geometry), and documents addressing calculation of load capacity and wormgear design (ISO 14521 / ISO/TR 14521 series and other gear calculation documents). National adoptions (BS, NF, NEN, etc.) are identical where issued.

Keywords

worm gears, worm geometry, name plate, nameplate, centre distance, gear units, gear manufacturer information, wormgear, gear specifications, gearbox marking.

FAQ

Q: What is this standard?

A: ISO 10347:1999 is an International Standard that sets out geometry-related information for worms used in worm-gear units and specifies the information to appear on name plates and the purchaser information required by the gear manufacturer.

Q: What does it cover?

A: It covers recommended centre distances for worm gears, requirements and recommended content for durable name plates on worm-gear units, and a list of information the purchaser should provide to the gear manufacturer to ensure correct selection and manufacture (centre distance, ratio, torque, lubricant, etc.). It applies to enclosed units and to open worm gear pairs for the purposes indicated (recommended centre distances and purchaser information).

Q: Who typically uses it?

A: Gear manufacturers, design engineers, purchasers specifying worm-gear units, quality/inspection personnel, and maintenance engineers who need clear marking and specification data for worm gearing.

Q: Is it current or superseded?

A: ISO 10347:1999 has been withdrawn (stage: withdrawal). The ISO record shows the standard as withdrawn; national/adopted copies are likewise marked withdrawn in sales catalogues. Users should consult current ISO and national standards catalogues for any replacement standards or newer guidance.

Q: Is it part of a series?

A: It is part of the broader family of gear standards maintained by ISO/TC 60 (gears), and is normatively and informatively linked to other gear standards such as ISO 54 (modules), ISO 1122-2 (vocabulary for worm geometry) and documents on wormgear load-capacity calculation (ISO 14521 / ISO/TR 14521 references).

Q: What are the key keywords?

A: Worm gears; centre distance; name plate; gear unit marking; geometry of worms; purchaser information; gear manufacturer; wormgear specification.