120 teeth large gear 1202A plastic gear motor gear technology small production DIY model parts（4pcs）

Number of single-layer teeth: 120 teeth Module: 0.5 module Aperture(d): 1.9mm (tight fit 2mm) Tooth circle diameter(D1): 61mm Gear thickness(H1): 3.3mm Single gear, also known as spur gear Modulus: 0.5 Gear outer diameter number of teeth + 2) * 0.5 (unit mm) For example: 202A-2A means that the number of teeth is 20 teeth and the gear aperture is 2 mm. A means that it fits closely with the 2mm shaft. If it is B, it is loosely matched with the 2mm shaft.

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