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

Pololu item #: 183
Brand: Solarbotics
Status: Discontinued at Pololu 
RoHS 3 compliant

This product has been discontinued.

The Solarbotics GM7 gearmotor with 90-degree output is a compact, 120:1 gearmotor (gearbox with brushed DC motor) that is well-suited for use in small robots.

 Description Specs (11) Pictures (1) Resources (4) FAQs (0) On the blog (0) 

Note: We now have a similar, slightly less expensive version of this motor: the Pololu 120:1 mini plastic gearmotor. We also have a version with a 3mm-diameter D-shaft that works with our large selection of Pololu wheels.

This 120:1 gearmotor (gearbox with brushed DC motor) is very compact 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 qik 2s9v1 dual serial motor controller.

This gearmotor comes pre-assembled, 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 0.08" (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).

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
  • Weight: 19 g

Solarbotics GM7 gearmotor dimensions (in mm).

You can download a pdf version of this drawing with imperial dimensions (113k pdf) or metric dimensions (113k pdf).

Though the product picture shows two gearmotors, this product is for a single motor.

People often buy this product together with:

Solarbotics GM2 224:1 Gear Motor Offset Output Solarbotics GM2 224:1 Gear Motor Offset Output
Solarbotics GM3 224:1 Gear Motor 90 deg. Output Solarbotics GM3 224:1 Gear Motor 90 deg. Output
Solarbotics GM9 143:1 Gear Motor 90 deg. Output Solarbotics GM9 143:1 Gear Motor 90 deg. Output

Related Products

120:1 Mini Plastic Gearmotor, 90° 2mm Spline Output
120:1 Mini Plastic Gearmotor, 90° 3mm D-Shaft Output
2mm Shaft Adapter for LEGO Wheels (Pair)
Pololu Qik 2s9v1 Dual Serial Motor Controller
DRV8833 Dual Motor Driver Carrier
DRV8835 Dual Motor Driver Carrier
TB6612FNG Dual Motor Driver Carrier
Baby Orangutan B-328 Robot Controller

Related Categories

Solarbotics Gearboxes
Tamiya Motors and Gearboxes
Solarbotics Wheels
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