1993-POLOLU Universal Aluminum Mounting Hub for 1/4″ Shaft, #4-40 Holes (2-Pack)

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US$12.69
1993-POLOLU
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1993-POLOLU Universal Aluminum Mounting Hub for 1/4″ Shaft, #4-40 Holes (2-Pack)

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 six threaded mounting holes for #4-40 screws (not included).

We have an assortment of universal mounting hubs available, spanning several shaft sizes and featuring mounting holes threaded for metric or imperial screws.

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 six 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.

 

SKU
Product
Size
Weight (g)
Shaft diameter (mm)
Mounting hole size
1993-POLOLU Universal Aluminum Mounting Hub for 1/4″ Shaft, #4-40 Holes (2-Pack) 25.4 mm diameter × 9.2 mm thick 6.71 6.35 #4-402
1994-POLOLU Universal Aluminum Mounting Hub for 1/4″ Shaft, M3 Holes (2-Pack) 25.4 mm diameter × 9.2 mm thick 6.71 6.35 M32
1999-POLOLU Universal Aluminum Mounting Hub for 6mm Shaft, M3 Holes (2-Pack) 25.4 mm diameter × 9.2 mm thick 6.81 6 M32
1998-POLOLU Universal Aluminum Mounting Hub for 5mm Shaft, M3 Holes (2-Pack) 19 mm diameter × 5 mm thick 3.23 5 M34
1997-POLOLU Universal Aluminum Mounting Hub for 4mm Shaft, M3 Holes (2-Pack) 19 mm diameter × 5 mm thick 3.23 4 M34
1996-POLOLU Universal Aluminum Mounting Hub for 3mm Shaft, M3 Holes (2-Pack) 17.5 mm diameter × 5 mm thick 2.83 3 M34
1081-POLOLU Universal Aluminum Mounting Hub for 4mm Shaft, #4-40 Holes (2-Pack) 19 mm diameter × 5 mm thick 3.23 4 #4-404
1079-POLOLU Universal Aluminum Mounting Hub for 3mm Shaft, #2-56 Holes (2-Pack) 17.5 mm diameter × 5 mm thick 2.83 3 #2-565

Notes:

1. For a single hub only (without set screws).
2. This is also the size of the set screws.
3. For a single hub only (without set screw).
4. This is also the size of the set screw.
5. The set screw is #4-40.
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