MCM Electronics

42x19mm Wheel SET Without EncoderMCM Part #: 28-17694  |  Pololu Robotics & Electronics Part #: 1090

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This custom-designed white plastic wheel has a rubber tire measuring 1.65" (42 mm) in diameter and is designed to fit the output shafts on our micro and 15.5D metal gearmotors as well as the Solarbotics metal gear motors. Teeth on the hub optionally allow a reflectance sensor to be used for encoder feedback. These wheels are sold in pairs.

Product Description

This rugged wheel is designed to fit securely on the output shafts of micro and 15.5D metal gearmotors. These gearmotors should be mounted onto the side of the hub with the protruding teeth. The output shaft will slide into the socket easily at first but will achieve a snug fit when pressed through to the other edge of the hub.

The output shafts on the Solarbotics metal gear motors will also fit these wheels, but because they are shorter they will have to be mounted onto the other side of the wheel where the fit is tighter (which means the Solarbotics metal gearmotors will not work with the quadrature encoder associated with this wheel). These wheels will also work in this orientation on the Pololu plastic gearmotors with 3mm D-shaft outputs.

The extended micro metal gearmotor bracket is specifically designed to work with this wheel.

Specifications

  • Diameter: 1.65" (42 mm)
  • Width of tire: 0.75" (19 mm)
  • Weight: 0.66 oz (19 g)
Encoder Feedback
The hub has twelve teeth, each 3 mm wide and separated from its neighbors by 3 mm gaps. We offer a quadrature encoder (MCM Part# 28-17695) that uses these teeth to provide up to 48 counts per revolution (a linear resolution of just under 3 mm or 1/8"). The encoder is designed to work with the extended micro metal gearmotor bracket and micro metal gearmotors. The compact layout of the board fits all of the components within the envelope of the hub and tire, allowing the board to be mounted between the motor and a chassis. The encoder can be purchased as an individual unit or as a part of an encoder set (MCM Part# 28-17693) that includes two encoders, a pair of extended brackets, and a pair of 42x19mm wheels.

The two encoder channels are approximately 90° out of phase, allowing you to determine both rotational speed and direction.

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Package Specifications & Dimensions
Weight:0.75 lbs.
Hazardous:No
RoHS Comp:Yes
Warranty:365 days
Need to Return?
Length:5 in.
Width:3 in.
Height:1 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No
Catalog Pages
Catalog/Page:

MCM Cat 57, Page 744

Mfr. Info

Pololu Robotics & Electronics Logo
Mfr. Name:Pololu Robotics & Electronics
Mfr. Part Number:1090