NEMA23 bipolar stepper motor. It has a resolution of 200 steps/revolution (1.8° per step), a rated voltage of 12 V and draws a current of 2.8 A per coil. 57BYGH76

Solarbotics GM8 143:1 Gear Motor Offset Output

170 kV brushless DC motor. Powered with the voltage from 18 to 42 V, dedicated to electric skateboards and scooters

Pololu Universal Aluminum Mounting Hub for 6mm Shaft, M3 Holes (2-Pack)

Small motor with metal gear and encoder, rotation speed 150 RPM, operating voltage 6 V. GA46-N20E-0046

The kit uses a magnetic disc and hall effect sensors to provide 12 counts per revolution of the motor shaft. The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit. Compatible with all of the dual-shaft micro metal gearmotors we carry, including the HPCB versions. Pololu 3081

Bipolar stepper motor powered with a voltage of up to 12 V and a maximum current of 400 mA. SparkFun ROB-10551

AB two-phase pulse wave, measured by two infrared reflective sensor. These two sensor pulse waveform is close to a phase difference of 90 degrees, through the AB two-phase lead and lag of the waveform judged wheel forward rotation or the reverse. SEN0116

Pololu - 1524

A 10-pack of adapter boards with 2-pin JST SH-type back-entry connectors for Pololu single-shaft micro metal gearmotors. Enables easy, quick, and clean wiring in compact electronic and robotic projects. Pololu 5097

A brushless motor designed for 1/10th scale RC crawlers, offering high torque and smooth operation thanks to its 12N14P configuration. The 1800KV model works with 2-4S LiPo batteries and provides an optimal balance of power and control at low speeds. Its robust CNC aluminum construction, 3.17mm steel shaft, and precision bearings ensure durability and reliability in challenging terrain. The motor is equipped with 16AWG wires with 3.5mm plugs and is recommended for ESCs rated at at least 70A. SEQURE 3625 2-4S 1800KV

Motor with 20 mm diameter and 44 mm length, 156:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 91 RPM speed and 7.9 kg*cm maximum torque. Pololu 3718

Motor with 20 mm diameter and 43 mm length, 63:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 230 RPM speed and 4 kg*cm maximum torque. Pololu 3714

Pololu high power miniature motor with carbon brushes. 100:1 gear motor, shaft speed is 330 rpm, torque 1.3 kg*cm. Pololu 3041

DC motor with 1:84 planetary gear with a supply voltage from 6 to 24 V and a rotational speed of 140 RPM. Maximum current consumption up to 1.3 A. SparkFun ROB-15277

Motor with 25 mm diameter and 67 mm length, 34:1 metal gear, 6 V operating voltage, 0,55 A to 6,5 A power consumption, 280 RPM speed, 6,5 maximum torque and 48 CPR encoder. Pololu 4804

This NEMA 17-size hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1.7 A at 2.8 V, allowing for a holding torque of 3.7 kg-cm (51 oz-in). Pololu 2267

Motor with 25 mm diameter and 65 mm length, 20,4:1 metal gear, 6 V operating voltage, 0,25 A to 2,4 A power consumption, 290 RPM speed, 2,4 maximum torque and 48 CPR encoder. Pololu 4823

Motor with 37 mm diameter and 52 mm length, 19:1 metal gear, 12 V operating voltage, 0,2 A to 5,5 A power consumption, 530 RPM speed and 8,5 maximum torque. Pololu 4741

Miniature motor type MT64 without gear. The operating voltage ranges from 3 V to 6 V and draws 30 mA at 3 V