API St 677-2006 (2016) rus PDF

Full title and description

API Std 677:2006 (R2016) — General‑Purpose Gear Units for Petroleum, Chemical and Gas Industry Services. Russian-language edition/translation available; the document defines minimum design, accessory, lubrication, inspection and vendor data requirements for enclosed single- and multistage parallel‑shaft helical and right‑angle spiral‑bevel gear units used in petroleum, chemical and gas industry service applications.

Abstract

This standard specifies minimum technical requirements for general‑purpose gear units (parallel‑shaft helical and right‑angle spiral‑bevel) intended for petroleum, chemical and gas industry services, including limits on pitchline velocity (helical gears ≤ 60 m/s; spiral bevel gears ≤ 40 m/s), inspection and testing, lubrication systems, vendor data and typical accessory requirements. It excludes special‑purpose gear applications covered by other API documents (for example API 613), epicyclic assemblies, gears integral with other equipment and non‑involute tooth forms.

General information

• Status: Superseded / replaced (API Std 677:2006 R2016 has been superseded by API Std 677:2021).
• Publication date: 2006 (Third edition). Reconfirmed and issued as R2016 in some distributions.
• Publisher: American Petroleum Institute (API).
• ICS / categories: Mechanical engineering / rotating machinery — gears; petroleum, chemical and gas industry standards and equipment.
• Edition / version: 3rd edition (2006), reconfirmation/version marking R2016 in some catalogues/translations.
• Number of pages: Typically listed as 104 pages in major catalogues (page count may vary by format/translation).

Scope

Applies to general‑purpose, enclosed single‑ and multistage gear units incorporating parallel‑shaft helical and right‑angle spiral‑bevel gears for petroleum, chemical and gas industry services. The standard limits allowable pitchline velocities (helical up to 60 m/s; spiral bevel up to 40 m/s) and requires purchaser‑specified items to be identified on data sheets. It is not intended for special‑purpose gears (see API 613), epicyclic gear sets, gears integral with other equipment or non‑involute tooth forms.

Key topics and requirements

• Design and basic mechanical requirements for enclosed gear units (geometry, materials and allowable speeds).
• Accessories and auxiliary systems: lubrication system types and requirements, instrumentation and seals.
• Inspection, testing and preparation for shipment (factory tests, inspection criteria, balancing and documentation).
• Vendor's data and purchaser‑supplied information: required drawings, data sheets and purchaser decisions (bullet items require purchaser input).
• Appendices providing sample data sheets, lateral critical‑speed maps, typical lube‑oil systems, material specifications, vendor drawing/data requirements and inspection arrangements (e.g., spiral‑bevel contact).

Typical use and users

Used by OEMs and manufacturers of industrial gearboxes, rotating‑equipment engineers, procurement and specification writers, inspection and testing teams, and plant mechanical engineers in refineries, petrochemical and gas processing facilities. Typical applications include water‑circulation pumps, fans, blowers and other general‑purpose driven equipment trains in upstream and downstream hydrocarbon facilities.

Related standards

Closely related to other API documents and industry gear standards. Notable cross‑references include API 613 (special‑purpose gears) and numerous AGMA/ISO documents cited in appendices and reference lists; the 2006/R2016 edition is superseded by API Std 677:2021 (which expands scope to include extruder and epicyclic gear units in later editions).

Keywords

API 677, gear units, gearbox, helical gears, spiral bevel, pitchline velocity, petroleum industry, chemical industry, gas industry, lubrication system, inspection, vendor data, gearbox design.

FAQ

Q: What is this standard?

A: API Std 677:2006 (R2016) is an API industry standard that defines minimum requirements for general‑purpose enclosed gear units used in petroleum, chemical and gas industry services.

Q: What does it cover?

A: It covers design basics, allowable gear pitchline velocities (helical ≤ 60 m/s; spiral bevel ≤ 40 m/s), accessories, lubrication systems, inspection and testing, vendor data requirements and several appendices with data sheets and typical system examples.

Q: Who typically uses it?

A: OEM gearbox manufacturers, plant rotating‑equipment engineers, procurement/specification authors, and inspection/test personnel in petrochemical, gas and related industrial facilities.

Q: Is it current or superseded?

A: The 2006 (R2016) edition is superseded — the current API document for this subject is API Std 677:2021 (which updated and expanded the scope). Users should reference the 2021 edition for the latest requirements.

Q: Is it part of a series?

A: Yes — API 677 belongs to a family of API rotating‑equipment standards. It cross‑references and complements other API standards (for example API 613 for special‑purpose gear units) and references AGMA and ISO gear and testing documents.

Q: What are the key keywords?

A: Gear units, helical gears, spiral bevel gears, pitchline velocity limits, lubrication systems, inspection/testing, vendor data, petroleum/chemical/gas industry.