Gear Information, Formulas And Calculations

News Links

• Spur Gear Tooth Dimensions - Full Depth American Standard Involute System: Calculations to determine tooth thickness, addendum, whole depth, etc...
• Gear Pitch Conversion - Formulas for converting between diametral pitch, circular pitch and module gear pitches.
• Pitch Conversion Table - A tabulated page of standard pitches and their corresponding conversions.
• Spur Gear Calculations (DP) - Some basic formulas used for spur gear calculations, using the Diametral Pitch system.
• Backlash Tables - Recommended backlash based on pitch and center distance.
• Gear Tooth Span Readings - Standard span readings on spur gears.
• Base Pitch - Determine what you gear is by measuring the base pitch.

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Miscellaneous Calculations, Formulas And Tools

• Weight Calculations - Weight calculations, formulas and calculators for the most common shapes and materials. Includes an on-line calculator to determine weights.
• Drilled And Tapped Holes - Tables that give drill sizes and percent of threads in contact for common drilled and tapped holes, including imperial and metric sizes.
• Standard Keyway Sizes - Tables that show the standard keyway sizes and setscrews based on bore and shaft sizes.
• Bolt Head Identification Markings - Shows the standard ASTM and SAE markings for bolt heads.