Spurgears

thingiverse

Set of spur gears containing: n = 10, 15, 20, 25, 30, 35, 40 (numbers of teeth) MM = 2, 3 (Metric Module) Please comment if you need gears with other tooth counts or metric modulus (standards are: 1, 2, 2.5, 3, 4, 5, 6, 8, 10...). Relevant parameters for a gear box design: Gear Pitch: p = pi * MM Pitch Circle Diameter of the gear PD = n * MM Distance between the gearshafts: d = (PD1/2)+(PD2/2) Outside Diameter of the gear: OD = (n+2) * MM Gear Transmission Ratio: i = n2/n1 = PD2/PD1 = r1/r2 = M2/M1 (where r is the rpm/rps and M is the torque of each gear) The names of the files give information about the metric module and the number of teeth: Gear_"metric module"_"number of teeth" Please use the uploaded step-files to add a hole for the driveshaft if needed.