Universal Aluminium Mounting Hub for 3mm Shaft, 4-40 Holes (2-Pack)

Universal Aluminium Mounting Hub for 3mm Shaft – Pololu 1078

These universal mounting hubs are designed to allow custom wheels and mechanisms to be fitted to 3mm motor shafts. They will work with most motor shaft types including round, “D” type and Tamiya's 3mm hexagonal shafts. Each hub has 4 threaded mounting holes designed to be used with #4-40 screws. Screwing the included #4-40 set screws into the set screw holes allows the hub to be secured to a 3mm motor shaft.

Dimensions:

• Size: 19mm diameter x 5mm thick
• Weight: 3.2 g*
• Shaft Diameter: 3 mm
• Mounting Hole Size: #4-40

* This value is for a single mounting hub without set screw.

Included Items:

• Two mounting hubs
• Three #4-40 set screws (one for each hub and a spare)
• One 0.05″ Allen wrench

Note: Screws for mounting wheel or mechanism to hub not included.

Documents:

• Pololu 1078 Mounting Hub Engineering Drawing
• Pololu 1078 Mounting Hub Step File