Technical Reference
Spur Gear Terminology, Formulas & Reverse Engineering
Everything engineers need to specify, calculate and identify spur gears, plus the manufacturing capability to match any spec you find.
Engineering Resources
Spur Gear
Tech Reference
Definitions, formulas and a step-by-step identification method for inch-system spur gears, written by the team that cold forms them.
Definitions
Spur Gear Terminology
Sixteen terms every spec sheet uses, from addendum to working depth, each with its formula.
Quick Reference
Formulas & Calculator
Diametral pitch formulas plus a calculator that derives every dimension from tooth count and DP.
Step-by-Step Guide
Reverse Engineering Guide
Identify an unknown gear in four steps with a micrometer, or send us the sample for CMM inspection.
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