75Pcs Plastic Gear Rack Pulley Gearbox Sets

75Pcs Plastic Gear Rack Pulley Gearbox Sets

75Pcs Single / Double Plastic Gear Motor Rack Pulley Gearbox Model Toy Car Auto Craft DIY Accessories Four-wheel Drive Robot Kit

Product Introduction:

• Modulus:0.5M
• Hole Diameter:0.8,1,1.9,2.05,2.55,3
• Material:POM plastic

DIY knowledge guide:

1. Gear diameter calculation formula: gear outer diameter (tooth top circle) = (number of teeth +2) * modulus
2. If it is 2mm axis, with tight gear, please choose 1.9mm hole gear.
3. With the loose gear, that is free to slide, please select the 2.05mm hole gear; In other words, tightly selected with a small 0.1mm hole gear, loose with a large selection of 0.05mm gear.