TAG · GEAR

Gears

Gears are the most common power-transmission element, changing speed, torque and direction of rotation. This collection covers spur, internal, helical, double-helical and bevel gears, worms, worm wheels and racks — all modelled with true involute flanks, with module, tooth count, pressure angle, profile shift and backlash, exported as STEP, STL or 3MF. Meshing gears must share module and pressure angle; for 3D printing add about 0.1 mm of backlash.