The Tamiya 72002 gearbox with the possibility of installing racks in a gear ratio of 11.6:1 and 18:1. It is suitable for very fast vehicles or mechanisms that do not require high torque. Pololu 71

Pololu high power miniature motor with carbon brushes. 100:1 gear motor, shaft speed is 330 rpm, torque 1.6 kg*cm (0.16 Nm). Pololu 3065

Motor with 37 mm diameter and 57 mm length, 150:1 metal gear, 24 V operating voltage, 0,1 A to 3 A power consumption, 68 RPM speed and 56 maximum torque. Pololu 4687

Adapter that allows you to easily mount the wheels on a motor with a shaft diameter of 6 mm using screws size 4-40. The hub fits both round and D-shaped shafts. Pololu 1083

This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 4.995:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 × 1 mm extended motor shaft.

298:1 Micro Metal Gearmotor

This gearmotor is a miniature low-power, 6 V brushed DC motor with a 75.81:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 × 1 mm extended motor shaft.

Miniature high-power motor from the Pololu MP series. Gear motor 250: 1, shaft speed is 90 rpm, torque is 3 kg * cm (0.3 Nm). The motor has an extended shaft which makes it easy to attach the encoder. Pololu 2384

Advanced brushless DC (BLDC) motor controller offering precise motion control with closed-loop FOC. Equipped with an OLED display, 360° slip ring, and CAN and Grove interfaces, it provides flexibility in integration and mounting, ideal for industrial applications, automation, educational and visual projects. M5stack U188

The turbo metal gear worm motor uses a metal gear box for durability and a high torque output. Due to the special mechanical structure of the worm drive the motor output shaft is self locking and can not be rotated. FIT0489-B

Vibration damper for NEMA23 engines (Damper). It attenuates the vibrations and vibrations occurring at engine operation. Dimensions: 56x56x6mm

Motor with 25 mm diameter and 67 mm length, 47:1 metal gear, 12 V operating voltage, 0,3 A to 5,6 A power consumption, 210 RPM speed, 12 maximum torque and 48 CPR encoder. Pololu 4845

Motor with 25 mm diameter and 69 mm length, 99:1 metal gear, 12 V operating voltage, 0,2 A to 2,1 A power consumption, 76 RPM speed, 12 maximum torque and 48 CPR encoder. Pololu 4867

Pololu high power miniature motor with carbon brushes. 210:1 gear motor, shaft speed 85 rpm, torque 2.5kg*cm. The motor has an extended shaft, which makes it easy to attach the encoder. Pololu 3054

Pololu high power miniature motor with carbon brushes. 150:1 gear motor, shaft speed 220 rpm, torque 1,8kg*cm. The motor has an extended shaft, which makes it easy to attach the encoder. Pololu 3053

Miniature, 12V brush DC motor with metal gear with 15.25: 1 ratio. It has a cross section of 10 × 12 mm, and the D-shaped output shaft has a length of 9 mm and a diameter of 3 mm. It also has an extended motor shaft with dimensions of 4.5 × 1 mm. Pololu 4789

A set of two magnetic encoders for use with Pololu DC Micro motors. The maximum resolution is 12 pulses per one revolution of the motor shaft. Powered from 2.7V to 18V. Pololu 4761

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

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.

A small motor with a metal gear ending with a shaft with M3 thread, rotation speed 100 RPM, operating voltage 6 V. GA1036-N20M-0055