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These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 3 mm diameter motor shafts. The set includes two hubs, two M3 set screws for securing the hubs to motor shafts, and one 1.5 mm Allen wrench for use with the set screws. Each hub has four threaded mounting holes for M3 screws (not included).
These universal mounting hubs are designed to work with most 3 mm diameter shafts, including round shafts, “D” shafts, and Tamiya’s 3 mm hexagonal shafts. Each of the two included hubs has four mounting holes for M3 screws (not included), letting you mount custom wheels or mechanisms to your motors. The two included M3 hex set screws (one for each hub) allow secure coupling of shaft to hub, and a 1.5 mm hex wrench is included for use with the set screws. A dimension diagram of the hub is available under the resources tab.
The picture to the right shows a hub with one of Pololu’s mini metal gearmotors and a Pololu mini metal gearmotor bracket. These hubs will work with any Pololu mini/15.5D mm metal gearmotor or micro metal gearmotor, and they also work with 60 mm, 70 mm, 80 mm, and 90 mm Pololu wheels.
- Product Wiki
- Pololu universal aluminum mounting hub for 3mm shaft, M3 holes mechanical drawing: Printable mechanical drawing for the Pololu universal aluminum mounting hub for 3mm shaft, M3 holes.
- 3D model of Pololu Universal Aluminum Mounting Hub for 3mm Shaft, M3 Holes
- Animatronic tentacle mechanism using Pololu Universal Mounting Hubs: While our Universal Mounting Hubs are mainly intended as general-purpose adapters for motor shafts, it seems that they can also be used...
Pololu Universal Aluminum Mounting Hub for 3mm Shaft, M3 Holes (2-Pack) 
- Brand: Pololu
- Product Code: POL-1996
- Reward Points: 6
- Availability: 2
- Ex Tax: £6.95
- Price in reward points: 100