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EXP Tech will be closed from 14.12.2020 to 04.01.2021 for the Christmas Holidays. Last shipping day in 2020 is 11.12.2020. Please plan ahead.

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Your EXP-Tech team


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

€7.75 *

Prices incl. VAT plus shipping costs

Ready to ship today,
Delivery time appr. 1-3 workdays

Order within the next 2 hours and 55 minutes so the order will be shipped today .
  • Pololu
  • EXP-R25-332
  • 1993
  • 5
  • CN
  • 83024900
  • 0.016
These universal mounting hubs are designed to work with most 0.250 inch (6.35 mm) shafts,... more

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.

Specifications:
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.
Documents:
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