- Out-of-Stock

Pololu 42x19mm Idler Wheel/Sprocket Pair - White
These freely rotating idler sprockets match those included with our 22T and 30T track sets. The white plastic hubs can be used with the 30T track set as additional idler sprockets, or they can be used with the included rubber tires as idler wheels that have the same overall dimensions as our 42×19mm wheels. This product includes two idler sprockets/hubs, two rubber tires, and mounting hardware consisting of two shoulder bolts, two nuts, and two washers.
These idlers have 3.5 mm diameter circular holes that allow them to spin freely when used with the included shoulder bolts or similar mounting hardware. The plastic hubs are the same as the idler sprockets included with the Pololu 22T and 30T track sets, and they can be used with the 30T track set as additional idler sprockets:
![]() |
They can be used with the included rubber tires as idler wheels that have the same overall dimensions as our 42×19mm wheels:
|
|
This product includes two idler sprockets/hubs, two rubber tires, and mounting hardware consisting of two shoulder bolts, two M3 nuts, and two washers. The idler sprocket/wheel can be mounted with the provided shoulder bolt as shown in the diagram below. (The red block represents a bracket or chassis that the sprocket is being mounted to, and is not a part included with this product.) Our nylon spacers can be used to offset the idlers from a flat mounting surface.
![]() |
The diagrams below show the dimensions of the hubs and the included shoulder bolts. (Note that the hub diagram is actually the diagram of a drive sprocket; the labeled dimensions are all the same for the idler version, but the center hole is circular for the idler hubs, not D-shaped, and there is no strain-relief slit.) The threaded portion of the shoulder bolts can be cut to the desired length.
|
|
![]() |
Pololu 30T Track Set |
![]() |
Pololu Wheel 42x19mm Pair |
![]() |
Pololu 42x19mm Wheel and Encoder Set |
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Self-assembly kit without TOBBIE robot soldering. KSR18
No product available!
No product available!
No product available!
No product available!
No product available!
No product available!
MKII version AVR Mini with microUSB connector is the equivalent of a more extensive programmer MKII AVR PRO and is fully compatible with AVRISP-MKII. It can be used to program microcontrollers from the AVR family: ATtiny, ATmega and ATxmega. It is equipped with two ISP / PDI / TPI 2 x 3 pin connectors
No product available!
No product available!
2in1 soldering station with hot air soldering iron and soldering tip. 700 W power station. Equipped with LCD display, button operated. YIHUA 992D
No product available!
Brushless motor Turnigy 2209 1050 kV outrunner type (HK27303)
No product available!
Camera with OV9712 CMOS sensor with a resolution of 1280x720 px. It communicates via the DVP parallel interface. ArduCAM U6041
No product available!
No product available!
No product available!
No product available!
ROSA3D filament made of high quality PVB. 0.5 kg of filament with a diameter of 1.75 mm is wound on the spool. ROSA3D PVB Smooth Yellow
No product available!
Module with 6 5x7 LED matrix displays designed to work with the Raspberry Pi. It uses IS31FL3730 drivers and communicates via the I2C interface. Pimoroni PIM187
No product available!
Pololu 42x19mm Idler Wheel/Sprocket Pair - White