Feichao 81 Types Not Repeating Plastic Gear 0.5 Modulus Rack Reduction Gear Box DIY Model Accessory

81 Types Not Repeating Plastic Gear 0.5 Modulus Rack Reduction Gear Box  DIY Model Accessories

81 kinds of plastic gear , in this gear package includes a variety of different numbers of teeth of the gear, rack, gear modulus all 0.5 modulus, can freely mix, which contains seven kinds of models additionally pulley.

Type : 81 species no repeat containing standard gear, fan gear, rack, worm, pulleys, belts (20 belt count one kind)

Modulus : 0.5 

Hole Diameter :0.8, 1, 1.9,  2.05, 2.55, 3 

Material : POM Plastic

Tips :

(1) Gear diameter formula: gear outer diameter (addendum circle) = (number of teeth +2) * modulus

(2) If the axle of 2mm, you need to bear with gears, select gears 1.9mm hole;

If you need to loose with, that is, free to slide, select 2.05mm hole gear;

Namely: tight fit, choose a small 0.1mm hole gear, loose gear with a large selection of 0.05mm