This 224:1 gearmotor (gearbox with motor) is a great low-cost alternative to modified hobby servos. The low-current motor & compact size of 2.78" x 1.06" x 0.91" (70.5 x 27 x 23 mm) makes this unit an attractive choice for small robot designs.

At 5 V, the gearbox and motor provide 50 oz-in of torque and 38 RPM, which is slightly slower than a servo. The free-running current is 52 mA, and the stall current is 600 mA. A built-in safety clutch engages at approximately 60 oz-in.

This gearmotor comes pre-assembled, with the gears fully enclosed. There are built-in mounting holes, and the output shaft is 7mm in diameter with two sides flattened.

Specifications

• Description: 90-degree
• Gear ratio: 224:1
• 3 V Operation:
  • No-load RPM: ~ 24
  • No-load current: ~ 40 mA
  • Stall current: ~ 400 mA
  • Stall torque: ~ 49 oz-in
• 6 V Operation:
  • No-load RPM: ~ 46
  • No-load current: ~ 50 mA
  • Stall current: ~ 733 mA
  • Stall torque: ~ 57 oz-in
• L x W x H: 70 x 22.5 x 37 mm