Gear tooth contact
Proportion of tooth contact
Along the lead, it is the mean contact length as a proportion of the effective face width . Up the tooth, it is the mean contact height as a proportion of the working depth .
Notes
- References
- Former JIS B 1741-1977 Tooth contact of gears (withdrawn)
This page has not been checked against the standard itself. The values were taken from an extract published in a manufacturer's technical literature and rebuilt into this table.The layout and wording of the table are not those of the source. - This is a withdrawn standard, not the current one.Before using these as a design or acceptance criterion, check the current standard or the agreement with your supplier.
- What each class means, and how contact is measured along the lead and up the tooth depth, is explained behind the i in the table header.
- Poor tooth contact causes vibration and noise, and shortens the life of the tooth flank.
