Magnetic Gear

This a magnetic gear that uses cheap household magnets, bearings, and fasteners to work.

Assembly and Demonstration:

Hardware to Assemble:

• 6082RS Bearings: https://amzn.to/2YJi1IK
• Permanent Magnets: https://amzn.to/2ywS7xd
• 8-32 1/4" Machine Screws: https://amzn.to/2SULXhI

Magnetic gears have some unique advantages/disadvantages over regular gearing.

Very quiet and low friction since they don't require contact between input/output
Decoupling between input/output if the torque limit is exceeded
Generally only used for very low torque applications