Vibration motor with a diameter of 10 mm and a height of 2 mm. It has a self-adhesive 3M backing for easy installation. Pololu 1638

Motor with 25 mm diameter and 69 mm length, 99:1 metal gear, 6 V operating voltage, 0,55 A to 6,5 A power consumption, 97 RPM speed, 15 maximum torque and 48 CPR encoder. Pololu 4807

Motor with 25 mm diameter and 67 mm length, 47:1 metal gear, 6 V operating voltage, 0,55 A to 6,5 A power consumption, 200 RPM speed, 8,5 maximum torque and 48 CPR encoder. Pololu 4805

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, 12V brush DC motor with metal gear and 15.25:1 gear ratio. It has a cross section of 10 × 12 mm, and the D-shaped output shaft with a length of 9 mm and a diameter of 3 mm. Pololu 4786

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

Solarbotics GM3 224:1 Gear Motor 90 deg. Output

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

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

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.

1000:1 Micro Metal Gearmotor

This gearmotor is a miniature medium-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.

Key specs at 6 V: 290 RPM and 40 mA with no load, 17 oz-in (1.2 kg-cm) and 0.7 A at stall.

Solarbotics GM2 224:1 Gear Motor Offset Output

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

Motor with 37 mm diameter and 57 mm length, 131:1 metal gear, 24 V operating voltage, 0,1 A to 3 A power consumption, 79 RPM speed and 47 maximum torque. Pololu 4686

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

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

These aluminum gearmotor brackets let you securely mount Pololu’s 25D mm metal gearmotors to your project. The brackets are sold in pairs, and each bracket includes two M3 screws for securing the motor to the bracket. Each bracket also features seven mounting holes and twelve mounting slots for M3 or #4-size screws (not included), giving you a variety of mounting options.

30:1 Micro Metal Gearmotor HP with Extended Motor Shaft