MPMA is pleased to announce the publication of three new revisions to standards. ANSI/AGMA 6011-K25, Specification for High Speed Helical Gear Units, written by the AGMA High Speed Gearing Committee, ANSI/ABMA 20-2025, Radial Bearings of Ball, Cylindrical Roller and Spherical Roller Types - Metric Design, written by the ABMA ASC B3 committee, and ANSI/ABMA 4-2025, Tolerance Definition and Gauging Practices for Ball and Roller Bearings also written by the ABMA ASC B3 committee.
Many of our favorite movie characters carry an alter ego: Clark Kent and Superman, Jekyll and Hyde, Bruce Wayne and Batman…you get my point. Neither nefarious nor secret, the Motion + Power Manufacturers Alliance (MPMA) carries a similar twin. You may be involved in one of our 15 technical committees and the sub-working groups that are involved in one of the 14 open projects (found at agma.org/committees/standards-projects/ or americanbearings.org/industry-standards/), but both AGMA and ABMA divisions are busy helping to develop international standards on the gear and bearing technical committees within the International Standards Organization (ISO). Our ISO “alter ego.”
Publishing technical standards is a lengthy process that takes place over several years. After the process of the working group writing the document, AGMA staff making changes from the General Ballot, and completing all associated ANSI documents, it is finally time for the working group to turn the document over to AGMA staff for publication. These final publication tasks are to:
We get a lot of questions here at AGMA asking for help in decoding gear accuracy grades (also known as tolerance classes). If we’re lucky the inspection standard is called out on the print, or the customer knows what standard they want the gears to be inspected, or they are ok to use the most current standard. If that’s not the case it takes some detective work to determine the proper inspection standard.
The AGMA Technical Division Committees have been working on improvements and additions to our standardization efforts. We have three new projects to announce and are looking for technical experts from our membership to join the effort.
Contact | Privacy Policy
©2025 Power Transmission Engineering
