Printable Planetary Gear

This is the 5:1 planetary gear for a nema 17 motor found on thingiverse. The gears require six 683zz bearings and one 6x17x6 bearing for the output shaft. The 683zz bearings are expensive, but a good cheaper source can be found at your local hobby store. The bearings are found on a t-rex 600 helicopter and are usually 4 for $6. The output shaft is a 6mm bolt. The total cost of the gearbox was $13 which includes all the bearings, the 6mm bolt, and the screws. The motor is from sparkfun for about $15. http://www.sparkfun.com/products/9238. You can find the plans for the planetary gear here on thingiverse.

http://www.thingiverse.com/thing:8460

Category:

Science & Technology

Tags:

• planetary
• gear
• box
• stepper
• nema
• 17
• makerbot
• 3d
• printer
• abs
• plastic
• sparkfun
• thingiverse
• reducer
• 5:1
• Stepper Motor

[enticed2zeitgeist]

What is the advantage of this gear set?

What 3d printer did you use btw?

Thanks for vid. Subbed.

[saltedguy]

@enticed2zeitgeist The planetary gear allows you to have almost 5 times more torque and 5 times the steps per revolution. The only downside is it now moves slower. Buying a gear box is usually $100 or more, but this print only cost me $13 including all the bearings. It was printed on a Dimension Elite 3D Printer. Its basically a bigger maker bot in a cabinet with a much higher operating cost.

[enticed2zeitgeist]

@saltedguy Never heard of that particular 3d printer. I presume it's more expensive because it can print large objects?

[saltedguy]

@enticed2zeitgeist Its more accurate than the makerbot, it has a dual material 0.007" extrusion head. It prints an abs plastic an a support material so you can print virtually anything.

[saltedguy]

@saltedguy A support material is a temporary material used to support the structure of the part while its building. It allows you to build things that normally can't be printed by these types of printers. They call the places that need support material overhangs. The makerbot has a similar support material, PLA plastic. Its the plastic that dissolves in water. If you were to get a dual head makerbot (they exist) then you can print with one plastic and one support material.

[enticed2zeitgeist]

@saltedguy A support material? Could you clarify what that is?