Solarbotics GM7 120:1 Mini Gear Motor 90 deg. Output

This 120:1 gearmotor (gearbox with motor) is a very compact 2.09" x 0.51" x 0.75" (53 x 13 x 19 mm), and weighs only 0.7 ounces (20 grams) — perfect for building a quick, miniature robot.

This gearmotor starts rotation at 0.58 V, drawing only 46.5 mA at 7 RPM. At 5 V, the gearbox and motor provide 20 oz-in of torque and 145 RPM. The free-running current is 88 mA, and the stall current is 610 mA. The low-current motor is a perfect match for our micro dual serial motor controller.

This gearmotor comes pre-assemebled, with the gears fully enclosed. A clutch limits the output torque to approximately 25 oz-in (which is produced at 6.5 V, drawing 650 mA) to protect the gearbox and motor. The unit has one mounting hole, and the chrome-finish output shaft is splined with a 0.8" (2 mm)-crest diameter.

A custom plastic wheel is available for this gearmotor, as well as a LEGO wheel adapter that allows it to be used with a variety of LEGO wheels.

For a version of this gearmotor with the output shaft parallel to the motor shaft, see the GM6 gearmotor. For a similar but larger gearmotor, see the GM3 gearmotor (224:1) and the GM9 gearmotor (143:1).

Note: This gearmotor does not come with mounting hardware, instructions, or packaging.

Specifications

• Description: Mini 90-degree
• Gear ratio: 120:1
• 3 V Operation:
  • No-load RPM: ~ 75
  • No-load current: ~ 80 mA
  • Stall current: ~ 310 mA
  • Stall torque: ~ 13.6 oz-in
• 6 V Operation:
  • No-load RPM: ~ 146
  • No-load current: ~ 92 mA
  • Stall current: ~ 525 mA
  • Stall torque: ~ 23.8 oz-in
• L x W x H: 53 x 13 x 19 mm
• Weight: 19 g

People often buy this product together with:

Solarbotics GM6 120:1 Mini Gear Motor Offset Output

Solarbotics GM3 224:1 Gear Motor 90 deg. Output

Solarbotics GM2 224:1 Gear Motor Offset Output