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About This Item


Full Description

This standard covers the minimum requirements for general-purpose, enclosed single and multistage gear units incorporating parallel shaft spur, and helical gears for use in the petroleum, chemical, and gas industry services. General-purpose and extruder gears manufactured according to this standard are limited to pitch line velocities that do not exceed 60 m/s (12,000 ft/min).


Document History

  1. API Std 677


    General-purpose, Extruder, and Epicyclic Gear Units for Petroleum, Chemical, and Gas Industry Services, Fourth Edition

    • Most Recent
  2. API Std 677 (R2016)

    General-Purpose Gear Units for Petroleum, Chemical and Gas Industry Services, Third Edition

    • Historical Version
  3. API 677

    General Purpose Gear Units for Petroleum, Chemical and Gas Industry Services

    • Historical Version