JIS B 1702-1 is a Japanese Industrial Standard, equivalent to ISO 1328-1, that defines classification and allowable deviation values for the tooth flanks of cylindrical involute gears, ranging in accuracy from grades 1 to 11. Updated in 2016, this standard covers spur and helical gears with reference diameters between 5 mm and 15,000 mm, focusing on critical parameters like pitch, profile, and helix deviations. For a detailed preview of the standard, visit JSA Webdesk .
: Specifically addresses "corresponding flanks," meaning it focuses on the deviations of the tooth surfaces that actually come into contact during mesh. Primary Deviations Measured
: Specifically covers spur and helical gears.
Established to align Japanese manufacturing with international standards, JIS B 1702-1 is technically equivalent to ISO 1328-1
Using a gear measuring machine (GMM), measure the actual gear. If the deviation is less than the PDF's table value, the gear passes.