Overview
This is an extended shaft version (9.7mm) of 1451-035 (see related products below). This brushed DC gearmotor is very compact and weighs only 19 grams — perfect for building a quick, miniature robot. The recommended operating voltage range for this motor is 3 to 6 V, though the gearmotor can start rotating at voltages as low as 0.5V. At 4. V, the motor has a free-run current of 130 mA and a stall current of 1.25A. The stall current, torque, and rotation speed will approximately scale linearly with the motor voltage. The gearbox is protected by a built-in safety clutch that will typically slip before gear teeth can shear.
This gearmotor features a 3 mm D-shaped output shaft that matches those on many of our micro metal gearmotors and works with the Pololu wheels and 3mm universal aluminum mounting hub.
Gearmotor Versions
This gearmotor is available with two different output shaft orientations—offset from but parallel to the motor shaft or perpendicular to the motor shaft—and in two gear ratios—120:1 (for higher speed) or 180:1 (for higher torque but shorter shaft type only).
Dimensions
| Size: | 36.5 x 20 x 27.4 mm1 |
|---|---|
| Weight: | 19g |
| Shaft diameter: | 3mm |
General specifications
| Shaft type: | 90° 3mm D |
|---|---|
| Typical operating voltage: | 4.5V |
| Gear ratio: | 120:1 |
| Free-run speed @ 4.5V: | 150 rpm |
| Free-run current @ 4.5V: | 120mA |
| Stall current @ 4.5V: | 1.25A |
| Stall torque @ 4.5V: | 25 oz·in2 |
Notes:
- 1
- See drawing for detailed dimensions.
- 2
- Note: the gearbox's built-in clutch might start slipping at a lower torque.