NOTE: Please see last page for errata.
This standard is applicable to enclosed gear drives including configurations of parallel, concentric, and right angle shafts. It includes foot mounted, shaft mounted, screw conveyor drives, and gearmotors. These enclosed drives utilize spur, helical, herringbone, double helical, or bevel gearing in single or multiple stages. Bevel gear drives may include shaft angles other than 90 degrees.
This standard includes design, rating, lubrication, testing, and selection information for enclosed gear drives, including foot mounted, shaft mounted, screw conveyor drives, and gearmotors. These drives may include spur, helical, herringbone, double helical, or bevel gearing in single or multistage arrangements and wormgearing in multistage drives, as either parallel, concentric, or right angle configurations.
[The foreword, footnotes and annexes, if any, in this document are provided for informational purposes only and are not to be construed as a part of ANSI/AGMA 6113-B16, Standard for Industrial Enclosed Gear Drives (Metric Edition).]
This standard revises, combines and supersedes two previous independent standards, ANSI/AGMA 6009-A00, Standard for Gearmotors, Shaft Mounted and Screw Conveyor Drives, and ANSI/AGMA 6010-F97, Standard for Spur, Helical, Herringbone and Bevel Enclosed Drives. The history of these standards have their roots in:
- AGMA 420.04, Practice for Enclosed Speed Reducers or Increasers Using Spur, Helical, Herringbone and Spiral Bevel Gears
- AGMA 460.05, Practice for Gearmotors Using Spur, Helical, Herringbone and Spiral Bevel Gears
- AGMA 480.06, Practice for Spur, Helical and Herringbone Gear Shaft-Mounted Speed Reducers
ANSI/AGMA 6113-A06 presents general guidelines and practices for design, rating and lubrication of parallel, concentric, and right angle shaft drives. It includes foot mounted, shaft mounted, screw conveyor drives, and gearmotors. It includes the available data, gear technology, and operational experience.
The comprehensive thermal rating procedure has been removed but is included by reference to AGMA ISO 14179-1.
This standard reflects the consolidation of “Enclosed Drives,” to include gearmotors, shaft mounted and screw conveyor drives, into a single document.
The allowable stress numbers used in this standard are derived from ANSI/AGMA 2101-D04, Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth, and ANSI/AGMA 2003-C10, Rating the Pitting Resistance & Bending Strength of Generated Straight Bevel, Zerol Bevel, and Spiral Bevel Gear Teeth, and, along with other rating factors, provide a rating basis for enclosed gear reducers and increasers. The rating formulas are based on many years of experience in the design and application of enclosed gear drives for industrial use. Provisions are included in this standard for using stress cycle factors other than 1.0 to adjust the rating for extended or reduced life. Using a stress cycle adjustment factor does not guarantee a certain number of life hours or stress cycles, but is a method of approximating gear life under different load and speed conditions.
In addition to a general update to match current industry practices, substantial changes in the new 6113-B16 include:
- moved wormgearing related text to Annex I;
- expanded crane service factor recommendations;
- revised and updated lubrication clause.
The competence to design enclosed gear drives, especially the knowledge and judgment required to properly evaluate the various rating factors, comes primarily from years of experience in designing, testing, manufacturing and operating similar gear drives. The proper application of the general rating formulas for enclosed gear drives is best accomplished by those experienced in the field.
The first draft of ANSI/AGMA 6113-A06 was created in November 2000. It was approved by the AGMA membership in March 2006. It was approved as an American National Standard on April 25, 2006.
The first draft of ANSI/AGMA 6113-B16 was created in November 2013. It was approved by the AGMA membership in October 2015. It was approved as an American National Standard on April 5, 2016.
The following documents contain provisions which, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions shown were valid. All standards are subject to revision, and the users of this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
AGMA 908-B89, Geometry Factors for Determining the Pitting Resistance and Bending Strength of Spur, Helical and Herringbone Gear Teeth
AGMA ISO 14179-1, Gear Reducers – Thermal Capacity, Based on ISO/TR 14179-1
ANSI/AGMA 1010-F14, Appearance of Gear Teeth – Terminology of Wear and Failure
ANSI/AGMA 1012-G05, Gear Nomenclature, Definitions of Terms with Symbols
ANSI/AGMA 2101-D04, Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth
ANSI/AGMA 2003-C10, Rating the Pitting Resistance and Bending Strength of Generated Straight Bevel, Zerol Bevel, and Spiral Bevel Gear Teeth
ANSI/AGMA 6000-B96, Specification for Measurement of Linear Vibration on Gear Units
ANSI/AGMA 6101-E08, Design and Selection of Components for Enclosed Gear Drives
ANSI/AGMA 6025-D98, Sound for Enclosed Helical, Herringbone, and Spiral Bevel Gear Drives
ANSI/AGMA 6034-B92, Practice for Enclosed Cylindrical Wormgear Speed Reducers and Gearmotors
ANSI/AGMA 6135-A02, Design, Rating and Application of Industrial Globoidal Wormgearing (Metric Edition)
ANSI/AGMA ISO 6336-6-A08, Calculation of Load Capacity of Spur and Helical Gears – Part 6: Calculation of Service Life Under Variable Load
ANSI/AGMA 9005-F16, Industrial Gear Lubrication
ANSI/AGMA 9112-B15, Bores and Keyways for Flexible Couplings (Metric Series)
ISO/R773:1969, Rectangular or square parallel keys and their corresponding keyways (Dimensions in millimeters)
Reaffirmed November 2021