This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 51.45:1 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.

This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 150.58:1 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.

Miniature high-power motor from the Pololu MP series. 100: 1 gear motor,
the rotation speed of the shaft is 220 rpm, the torque is 1.5 kg * cm (0.15 Nm).
The motor has an extended shaft which makes it easy to attach the encoder. Pololu 2381

This gearmotor is a miniature high-power, 6 V brushed DC motor with a 986.41:1 metal gearbox, making it a great choice for applications requiring fine control at very low speeds. 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.

Motor with 20 mm diameter and 44 mm length, 100:1 metal gear, 6 V operating voltage, 0.15 A to 2.9 A power consumption, 140 RPM speed and 5.4 kg*cm maximum torque. Pololu 3454

This gearmotor is a miniature high-power, 12 V brushed DC motor with long-life carbon brushes and a 297.92:1 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.

30:1 Micro Metal Gearmotor HP with Extended Motor Shaft

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

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

Engine with metal worm gear with ratio: 1: 37.3, supply voltage: 6V, 160rpm, torque: 0.27 Nm. DFRobot FIT0489-A

DC motor with plastic gear 1:48. Equipped with an incremental encoder with Hall sensors.

100:1 Micro Metal Gearmotor with Extended Motor Shaft

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

Motor with 20 mm diameter and 46 mm length, 488:1 metal gear, 12 V operating voltage, 0.08 A to 1.6 A power consumption, 28 RPM speed and 25 kg*cm maximum torque. Pololu 3497

298:1 Micro Metal Gearmotor

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

Small metal gear motor, 20 RPM speed, 6V operating voltage. GA12-N20-0010

Solarbotics GM3 224:1 Gear Motor 90 deg. Output

Plastic gear motor 200:1, output shaft at 90°, operating voltage 6 V, current consumption from 0.07 A to 0.8 A, speed 85 RPM and a maximum torque of 5.4 kg*cm. Pololu 1121

Solarbotics GM2 224:1 Gear Motor Offset Output