# DIN 6885 Keyway Bore Spur Gear & Sprocket .DXF Generator

Automatically size DIN 6885-1 standard shaft keyway widths (b) and hub depths (t2) inside CNC-ready involute gears and roller-chain sprockets.

## Engineering Geometry & Export Specification
- Embeds exact DIN 6885-1 keyway slot geometry (e.g. 6mm width x 2.8mm depth for Ø20mm shaft) on the BORE_KEYWAY CAD layer.
- CAD Outputs: 0.005mm AutoCAD R12 `.DXF`, `.SVG`, Watertight 3D Binary `.STL` (4–40mm face + hub boss + bore), and `1:1` Printable `.PDF`.
- Pricing: Free Spec Proof PDF ($0) · Single CAD Pack ($11.90) · Mechanical Engineer Pro ($19.00/mo).
- Live Interactive Workbench: https://gearcadpro.com/templates/din-6885-keyway-bore-gear-calculator.html