You can find further technical details and specific tables in the following resources:
The full document is protected by copyright and typically requires a purchase or a subscription. jis b 1702-1 pdf
If you are designing gears for an international market, understanding how JIS B 1702-1 differs from other standards is critical. You can find further technical details and specific
The PDF provides formulas. For example, the tolerance for single pitch deviation (fpt) might be calculated as fpt = 0.6 + 0.02m . Cross-reference this against the tables. For example, the tolerance for single pitch deviation
Crucially, JIS B 1702-1 is technically identical to ISO 1328-1:2013 (and previously to ISO 1328-1:1995 for older revisions). This means that JIS accuracy grades correspond directly to ISO grades. This harmonization ensures global interchangeability of gear inspection data.
Typically 2015 (confirmed/enacted in 2016). Older versions (e.g., 1998) are still referenced in legacy machinery.
(Cylindrical gears—ISO system of flank tolerance classification) is a Japanese Industrial Standard that defines the accuracy grades for the tooth flanks of individual cylindrical involute gears. It sets the allowable deviations (tolerances) for: Pitch Errors: Single pitch, cumulative pitch. Tooth Profile Error: How closely the gear teeth match the ideal involute curve. Helix Error (Lead Error): The accuracy of the tooth alignment across the face width. Key Takeaways: JIS B 1702-1:2016 vs. 1998