ANSI/AGMA 1102-C19, Tolerance Specification for Gear Hobs
This standard provides specifications for nomenclature, dimensions, tolerances, and inspection for gear hobs for modules 0.63 to 40 mm. It establishes a basis for understanding the use and manufacture of these tools.
The purpose of this standard is to provide specifications for nomenclature, dimensions, tolerances, and inspection of gear hobs, and thereby establish a basis for mutual understanding in this respect in the use and manufacture of these tools.
[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 Standard 1102-C19, Tolerance Specification for Gear Hobs.]
ANSI/AGMA 1102-A03 is a replacement of AGMA 120.01. The first draft of AGMA 120.01 was prepared by the Cutting Tools Committee in May 1972. Its purpose was to consolidate all AGMA standards relating to hobs; i.e., AGMA 121.02, 122.02, 123.01 and 124.01. The purpose of consolidating these standards was to provide the information as a handy updated reference on gear-cutting tools for efficient use by manufacturers and users of these tools.
The committee decided at the 1972 Semi-Annual Meeting to include Standard 124.01, Wormgear Hobs, as an Information Sheet. AGMA 120.01 was approved by the Cutting Tools Committee on November 6, 1973. It was approved by the AGMA Membership as of February 28, 1975.
ANSI/AGMA 1102-A03 is the result of a rewrite of AGMA 120.01, incorporation of the metric system, addition of inspection procedures, and development of equation-based tolerances. Other additions include increased tolerance grade levels, expansion of tolerances for multi-thread hobs, line of action testing, and expansion of the hob range of sizes. ANSI/AGMA 1102-A03 was approved by the AGMA Membership on December 3, 2003.
ANSI/AGMA 1102-B13 is a revision of ANSI/AGMA 1102-A03. The equations found in Clause 6 were updated and reformatted for clarity. In addition, tables were added to Clause 6 to assist in the use of these equations. The values in Table 8 were reviewed and updated accordingly. ANSI/AGMA 1102-A03, Annex D was removed.
The first draft of ANSI/AGMA 1102-B13 was made in March 2007. It was approved by the AGMA membership in April 25, 2013. It was approved as an American National Standard on April 8, 2013.
ANSI/AGMA 1102-C19, a revision of ANSI/AGMA 1102-B13, includes the following editorial changes;
- Deleted “MIL-STD-105E” in Normative Ref and in Clause 7.1.1;
- Table 8- changed the units in “Tolerance” column from “mm” to “µm”;
- Table B.2 – Corrected symbols.
The first draft of ANSI/AGMA 1102-C19 was made in September 2018. It was approved by the AGMA membership in July 12, 2019. It was approved as an American National Standard on December 5, 2019.
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