Standards evolve. AGMA 21801 was reaffirmed in 2020 with minor updates. A free PDF from a file-sharing site may be the 2018 draft or a scanned, illegible version. Using the wrong tolerance table can lead to rejected batches or field failures.
The standard mandates that you must state on the drawing both the grade and the inspection instrument type (e.g., "AGMA 218.01 Class 10, single-flank rolling test"). Without specifying the method, the tolerances are ambiguous. agma 21801 pdf
A unique feature of the AGMA 218 legacy system is its emphasis on composite action testing (using a dual-flank gear roll checker). The standard specifies limits for Tooth-to-Tooth Composite Error and Total Composite Error, which simulate real-world meshing behavior better than single-element inspection alone. Standards evolve
Standards evolve. AGMA 21801 was reaffirmed in 2020 with minor updates. A free PDF from a file-sharing site may be the 2018 draft or a scanned, illegible version. Using the wrong tolerance table can lead to rejected batches or field failures.
The standard mandates that you must state on the drawing both the grade and the inspection instrument type (e.g., "AGMA 218.01 Class 10, single-flank rolling test"). Without specifying the method, the tolerances are ambiguous.
A unique feature of the AGMA 218 legacy system is its emphasis on composite action testing (using a dual-flank gear roll checker). The standard specifies limits for Tooth-to-Tooth Composite Error and Total Composite Error, which simulate real-world meshing behavior better than single-element inspection alone.