About

What this site is, and what it does not claim to do.

About

Bevel Gear Generator is an independent engineering tool, built and run by one engineer. It is not affiliated with any gear manufacturer or software vendor, nothing on it is sponsored or advertised, and it is free to use.

The thing to trust here is not the author — it is the sources. Every figure in the dimension table names the standard clause or the formula it came from, so you can check it against ISO 23509 (tooth depths and blank geometry), ISO 53 (basic rack profile) and JIS B 1705 (backlash) rather than taking it on faith. Where a value is your input rather than a derivation, the table says that too.

Questions, corrections and bug reports are welcome, and a reported wrong number is more useful than a compliment: [email protected].

What it does not do

Stated plainly, because a tool that hides its limits is the one to worry about.

Straight bevel gears only. Spiral, Zerol and hypoid pairs are not generated.
Geometry, not strength. There is no load capacity rating — ISO 10300 or otherwise. Nothing here tells you whether the pair survives your torque.
The 2D drawings are back cone developments. A sphere cannot be flattened without distortion; the development preserves arc length and is exact at the pitch cone, approximate away from it. The solid model never uses it — it is a drawing aid.
The STEP file is a geometric model of the flank under the model you choose (octoid, as a generating machine cuts it, or the exact spherical involute). Machine settings, tooling beyond the cutter tip radius, tolerances beyond the backlash allowance, and anything about material or heat treatment are not modelled.
It is a starting point for a drawing, not a manufacturing release. Check the numbers before anyone cuts metal.