Pololu Universal Aluminum Mounting Hub for 1/4″ Shaft, #4-40 Holes (2-Pack)

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Quick Overview

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 1/4 inch diameter motor shafts.
Pololu Universal Aluminum Mounting Hub for 1/4″ Shaft, #4-40 Holes (2-Pack)

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  • Pololu Universal Aluminum Mounting Hub for 1/4″ Shaft, #4-40 Holes (2-Pack)
  • Pololu Universal Aluminum Mounting Hub for 1/4″ Shaft, #4-40 Holes (2-Pack)

Details

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 1/4 inch diameter motor shafts. The set includes two hubs, four #4-40 set screws for securing the hubs to motor shafts, and one 0.05″ Allen wrench for use with the set screws. Each hub has four threaded mounting holes for #4-40 screws (not included).

These universal mounting hubs are designed to work with most 0.250 inch (6.35 mm) shafts, including round shafts and “D” shafts, such as those on our NEMA 23 stepper motors. Each of the two included hubs has four mounting holes for #4-40 screws (not included), letting you mount custom wheels or mechanisms to your motors. The four included #4-40 hex set screws (two for each hub) allow secure coupling of shaft to hub, and a 0.05″ hex wrench (often the smallest size in SAE Allen wrench sets) is included for use with the set screws. A dimension diagram of the hub is available under the resources tab.

These hubs will work with our NEMA 23 stepper motors, and they also work with 80 mm and 90 mm Pololu wheels.

Dimensions

Size: 25.4 mm diameter × 9.2 mm thick
Weight: 6.7 g1
Shaft diameter: 0.250 in
Mounting hole size: #4-402

Notes:

1
For a single hub only (without set screws).
2
This is also the size of the set screws.

Additional Information

SKU ES002084
Manufacturer Pololu

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