MotorCell - Creating Press-Fit Parts

MotorCell’s shaftless design keeps things slim and easy to integrate. The rotor is made from 3.3mm aluminum with knurling on its edge, allowing direct press-fit attachment to the rotor’s teeth for a secure connection.

Press-Fit Guidelines

For installing press-fit 3D-printed parts, we recommend an inner diameter of 16.4mm to 16.6mm, depending on your 3D printer’s tolerance. Once printed, simply press the part onto the rotor’s teeth to hold it in place.

If additional security is needed, superglue can be applied to the rotor’s teeth. Make sure the glue is only applied to the sides, and doesn't enter near the MotorCell's bearing.

Example Press-Fit Mounts

A variety of 3D-printed mounts can be found in the MotorCell GitHub repository: 👉 MotorCell 3D Mounts

Examples include:

Fan Mount – Attach a small fan blade and mount
Stirrer Mount – Convert MotorCell into a compact stirrer
Vibrating Mass – Create a vibration motor for haptic feedback
Kinetic Art Mount – Drive rotating visual art

Important Considerations

Motor Load Capacity: MotorCell is designed for small loads. The speed will decrease as the load increases. The maximum spinning load is 12g at a radius of 18mm. Refer to the specifications for a torque vs speed graph.
High-Speed Caution: MotorCell operates at high speeds. Keep hands away from moving parts and wear protective eyewear.
Disassembly: Handle with care when unbolting the shaft. The motor contains small, precision-machined parts that are easy to lose. Reassemble with a torque of 0.15 Nm.
Soldering: Be cautious when soldering, as the motor’s magnets may attract the soldering iron.

Conclusion

We aim to make integrating MotorCell into your projects as seamless as possible.

Ready to start experimenting? Grab a MotorCell today and check out the MotorCell GitHub Repository for more code examples and technical documentation!