19 kinds of double-layer gear packages, model making, plastic gears, stacked teeth, reduction gears, motor accessories

Double gear Reduction gear
Modulus: 0.5, 19 kinds in total. Thickness: 4-5MM
Gear diameter calculation formula: (number of teeth + 2) X 0.5 (MM)

Laminated gears: 16102B, 18102A, 20082B, 20102B, 22082A, 22102B, 24102B, 24122B, 26082B, 28102B, 30122B, 30162A, 32082B, 34102B, 38082B, 40102B, 46082A, 48102B, 50102A
Model notes:
1. The first two digits of the code: the number of teeth of the external gear
2. Encoding three or four digits: the number of teeth inside the gear
3. The fifth digit of the code: the aperture size of the gear
4. Encoded English: A: tight fit B: loose fit
2A indicates that the central axis is 1.95mm; it fits closely with the 2mm optical axis and rotates with the optical axis.
2B indicates that the central axis is 2.05mm; loosely matched with the 2mm optical axis and freely rotate on the optical axis.
For example: 16102B size: 16 external teeth, 10 internal teeth, 2MM bore, loosely fitted axle.
Gear diameter: (16 + 2) X 0.5 (MM) = 9MM The outer diameter of the gear is 9MM