Involute gears that mesh, by module or diametral pitch
Spur, helical and herringbone gears, generated the way a cutter makes them. Design one gear or a meshing pair, an internal ring or a rack, and download STL, STEP, DXF or SVG.
Coming soon
Gears done the proper way
Module or diametral pitch
ISO 54 modules and the common diametral pitches; 20° standard, plus 14½°, 25° and stub forms.
Generated teeth
Involute flanks and the true trochoidal root from rolling the rack — undercut shown as cut.
Spur, helical, herringbone
Any helix angle and hand; the pair takes the opposite hand automatically.
Pairs, rings and racks
A meshing pair at the right centre distance, an internal ring gear, or a rack.
Profile shift with limits
Shift each gear, with the undercut and pointed-tooth limits from DIN 3960 shown.
Numbers to check against
Span width over k teeth and dimension over pins — what you measure on the real part.
Backlash the standard way
DIN 3967 tooth thinning series, or your own allowance.
Hubs, bores, spokes
Set screws, keyways, splines and hex bores; spokes; and laser-cut layer-cake gears.
The same files
STEP, STL, DXF, SVG and PNG, with print compensation in the STL only.
Meanwhile, the Timing Pulley Generator is ready
Same interface, same exports, same token pricing.