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About This Item
Full Description
a) beam pump structures,
b) pumping unit gear reducer, and
c) pumping unit chain reducer.
Only loads imposed on the structure and/or gear reducer by the polished rod load are considered in this specification. Also included are the requirements for the design and rating of enclosed speed reducers wherein the involute gear tooth designs include helical and herringbone gearing. The rating methods and influences identified in this specification are limited to single and multiple stage designs applied to beam pumping units in which the pitch-line velocity of any stage does not exceed 5000 ft/min and the speed of any shaft does not exceed 3600 rpm. This standard does not cover chemical properties of materials, installation and maintenance of the equipment, beam type counterbalance units, prime movers and power transmission devices outside the gear reducer, or control systems.
Document History
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API Spec 11E
Specifications for Pumping Units, Twentieth Edition- Most Recent
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API Spec 11E
viewing
Specifications for Pumping Units, Nineteenth Edition, Includes Errata 1 (2015) and Addendum 1 (2018)- Historical Version
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API Spec 11E
Specifications for Pumping Units, Eighteenth Edition, Includes Errata (2009)- Historical Version
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API Spec 11E (R2000)
Specifications for Pumping Units- Historical Version