The worm gear is a very particular gear to be treated, in fact, not being regulated by normative, each manufacturer has its own control specifications. You will understand well that therefore we are dealing with an extremely niche kinematics.
Worm drive - Wikipedia
Lubrication Fundamentals
【Type】: Mixed Plastic Gears. 【Gear module】: 0.5M. 【Material】: plastic. 【Features】: It is suitable for building simple versions of small technological
5pcs Module 0.5 Mixed Plastic Toothed Wheels Worm Crown Gears Toy Robot Parts
Worm Gear: What Is It? How Is it Made? Types Of, Uses
GREAT QUALITY: This gear kits is made of high quality plastic, which is durable and has long service life. MAIN FUNCTION: These products are for toys
Hilitand Plastic Gears Set Pulley Belt Worm Kits Crown Gear Set Robot Motor Car Toy for DIY Parts (85kinds)
Worm drive - Wikipedia
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