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Pololu Universal Mounting Hubs

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

Alternatives available with variations in these parameter(s): shaft diameter mounting hole size Select variant…

Each hub is compatible with a variety of our wheels as detailed in the following table:

Pololu Universal Mounting Hubs
for 3mm shafts for 4mm shafts for 5mm shafts for 6mm shafts for 1/4″ shafts for 8mm shafts
M3 holes
#4-40 holes
#2-56 holes
M3 holes
#4-40 holes
 
M3 holes
#4-40 holes
 
M3 holes
#4-40 holes
 
M3 holes
#4-40 holes
 
M3 holes
 
 

Pololu Wheels for 3mm Shafts
32×7mm
40×7mm
60×8mm
70×8mm
80×10mm
90×10mm

Pololu Wheels for Servos
40×7mm
60×8mm
70×10mm
90×10mm

Pololu Multi-Hub Wheels
80×10mm

White Pololu Wheel 60×8mm on a Pololu 20D mm Metal Gearmotor.

Black Pololu Wheel 90×10mm on a Pololu 37D mm Metal Gearmotor.

Products in category “Pololu Universal Mounting Hubs”

Pololu item #: 1079
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

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 #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 #2-56 screws (not included).

Pololu item #: 1078
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

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 #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).

Pololu item #: 1996
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

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).

Pololu item #: 1081
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 4 mm diameter motor shafts. The set includes two hubs, two #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).

Pololu item #: 1997
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 4 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).

Pololu item #: 1203
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 5 mm diameter motor shafts. The set includes two hubs, two #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).

Pololu item #: 1998
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 5 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).

Pololu item #: 1083
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 6 mm 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).

Pololu item #: 1999
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 6 mm diameter motor shafts. The set includes two hubs, four 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 six threaded mounting holes for M3 screws (not included).

Pololu item #: 1993
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 1/4 inch (6.35 mm) 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).

Pololu item #: 1994
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 1/4 inch (6.35 mm) diameter motor shafts. The set includes two hubs, four 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 six threaded mounting holes for M3 screws (not included).

Pololu item #: 2693
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 8 mm diameter motor shafts. The set includes two hubs, four 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 six threaded mounting holes for M3 screws (not included).

Related Products

Hex (Allen) Wrench 0.05"

Related Categories

Motor Shaft Adapters
Wheels, Tracks, and Ball Casters
Pololu Wheels and Tracks for 3mm D-Shafts
Pololu Wheels for Servos
Pololu Hex Wheel Adapters
Pololu Aluminum Scooter Wheel Adapters
Nuts and Screws
Motors and Gearboxes
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