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Summary

Description
English: Typical tooth dimensions of a spur gear. This illustration has involute tooth profiles, with the gear having 20 teeth in total. Four distinct dimensions are labeled:
  • t = tooth width, measured along the pitch circle
  • p = circular pitch, measured along the pitch circle
  • a = addendum, measured radially between the pitch circle and the addendum circle
  • b = dedendum, measured radially between the pitch circle and the dedendum circle

The gear also has three circles, which are not labeled. These are:

  • Dedendum circle = through the base of the teeth
  • Pitch circle = meshed gears have their pitch circles in tangent contact
  • Addendum circle = through the peak of the teeth
Date
Source Own work
Author Mliu92

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Information

Captions

Typical tooth dimensions of a spur gear

Items portrayed in this file

depicts

image/svg+xml

File history

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Date/TimeThumbnailDimensionsUserComment
current 18:31, 8 April 2024 Thumbnail for version as of 18:31, 8 April 2024120 × 160 (11 KB)Mliu92Reduced overall size, fonts
16:41, 8 April 2024 Thumbnail for version as of 16:41, 8 April 2024120 × 220 (11 KB)Mliu92Uploaded own work with UploadWizard
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