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1081-POLOLU Universal Aluminum Mounting Hub for 4mm Shaft, #4-40 Holes (2-Pack)
US$11.55
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).
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1996-POLOLU Universal Aluminum Mounting Hub for 3mm Shaft, M3 Holes (2-Pack)
US$8.33
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).
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1997-POLOLU Universal Aluminum Mounting Hub for 4mm Shaft, M3 Holes (2-Pack)
US$10.87
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).
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1998-POLOLU Universal Aluminum Mounting Hub for 5mm Shaft, M3 Holes (2-Pack)
US$11.78
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).
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1999-POLOLU Universal Aluminum Mounting Hub for 6mm Shaft, M3 Holes (2-Pack)
US$12.69
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).
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1994-POLOLU Universal Aluminum Mounting Hub for 1/4″ Shaft, M3 Holes (2-Pack)
US$14.61
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 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).
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1993-POLOLU Universal Aluminum Mounting Hub for 1/4″ Shaft, #4-40 Holes (2-Pack)
US$12.69
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).
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952-POLOLU Ball Caster with 1/2″ Plastic Ball
US$3.59
This ball caster kit includes a black ABS housing, a 1/2″ diameter plastic ball, two spacers (1/16″ and 1/8″ thick), and two #2 screw sets. The total height of the ball caster, 0.53″, can be increased to about 0.7″ using the included spacers. The two included #2 screws can be used to mount the ball caster to your chassis.
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953-POLOLU Ball Caster with 1/2″ Metal Ball
US$3.62
This ball caster kit includes a black ABS housing, a 1/2″ diameter metal ball, two spacers (1/16″ and 1/8″ thick), and two #2 screw sets. The total height of the ball caster, 0.53″, can be increased to about 0.7″ using the included spacers. The two included #2 screws can be used to mount the ball caster to your chassis.
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954-POLOLU Ball Caster with 3/4″ Plastic Ball
US$6.14
This light ball caster uses a 3/4″ diameter plastic ball. The height of the assembled kit ranges from 0.9″ to 1.2″. Dowel pins are used to minimize the friction between the ball and the ABS housing.
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955-POLOLU Ball Caster with 3/4″ Metal Ball
US$4.90
This ball caster kit includes a black ABS housing, a 3/4″ diameter metal ball, two spacers (1/16″ and 1/8″ thick), and two #2 screw sets. The total height of the ball caster, 0.83″, can be increased to about 1″ using the included spacers. The two included #2 screws can be used to mount the ball caster to your chassis.
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2691-POLOLU Ball Caster with 1″ Plastic Ball and Plastic Rollers
US$5.53
This ball caster uses a 1″ diameter plastic ball and has an overall height of 1.1″ (29 mm). The two-part housing snaps together to securely enclose the ball and three plastic rollers that reduce the friction between the ball and the ABS housing. The base piece of the housing has holes for three #4 or M3 screws (not included).
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2692-POLOLU Ball Caster with 1″ Plastic Ball and Ball Bearings
US$9.73
This ball caster uses a 1″ diameter plastic ball and has an overall height of 1.1″ (29 mm). The two-part housing snaps together to securely enclose the ball and three ball bearings that minimize friction between the ball and the ABS housing. The base piece of the housing has holes for three #4 or M3 screws (not included).
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3126-POLOLU Zumo 32U4 Robot (Assembled with 75:1 HP Motors)
US$209.93
The Pololu Zumo 32U4 robot is a versatile tracked robot based on the Arduino-compatible ATmega32U4 MCU. It includes two 75:1 HP micro metal gearmotors along with integrated dual motor drivers, an LCD, quadrature encoders, line sensors, side and front proximity sensors for detecting objects, and a full IMU for detecting impacts and tracking orientation. The low-profile robot is less than 10 cm × 10 cm—small enough to qualify for Mini Sumo.
Delivery within 2-3 weeks
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1078-POLOLU Universal Aluminum Mounting Hub for 3mm Shaft, #4-40 Holes (2-Pack)
US$9.87
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).
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