POLOLU
120:1 Mini Plastic Gearmotor HP, Offset 3mm D-Shaft Output, Extended Motor Shaft
120:1 Mini Plastic Gearmotor HP, Offset 3mm D-Shaft Output, Extended Motor Shaft
SKU:Pololu-1520
Out of stock
Couldn't load pickup availability
Share
This compact, inexpensive plastic gearmotor (high-power brushed DC motor with a 120:1 reduction gearbox) is well suited for use in small robots. While intended for operation at 4.5 V, it should run comfortably in the 3 V to 6 V range. The gearbox has a 9.7mm-long, 3 mm-diameter D-shaped output shaft that is perpendicular to the motor shaft, and a built-in safety clutch helps protect the gears from excessive loads. This version also has a 5×1.5 mm extended motor shaft.
Key specs at 4.5 V: 150 RPM and 130 mA free-run, 25 oz-in (1.8 kg-cm) and 1.25 A stall.
These brushed DC gearmotors are compact and affordable — perfect for building a quick, miniature robot. They are intended for use at 4.5 V, though in general, these kinds of motors can run at voltages above and below this nominal voltage, so they should operate comfortably in the 3 V to 6 V range (rotation can start at voltages as low as 0.5 V). Lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor. The plastic gearbox is protected by a built-in safety clutch that will typically slip before the gear teeth can shear (typically when the load exceeds around 25 oz-in, or 2 kg-cm).
The mini plastic gearmotor family offers two output shaft orientations relative to the motor shaft (offset and 90°), two motor options (normal and high-power, or HP for short), and two gearbox options (120:1 and 180:1). The 120:1 versions are white and the 180:1 versions are yellow:
|
|
Details for item #1520
This item has a high-power motor (1250 mA stall current), a 120:1 gearbox, and a 3 mm diameter “D”-shaped output shaft that is offset from but parallel to the motor shaft. The 1.5 mm diameter motor shaft extends approximately 5 mm past the base of the motor.
This compact, inexpensive plastic gearmotor (high-power brushed DC motor with a 120:1 reduction gearbox) is well suited for use in small robots. While intended for operation at 4.5 V, it should run comfortably in the 3 V to 6 V range. The gearbox has a 9.7mm-long, 3 mm-diameter D-shaped output shaft that is offset from but parallel to the motor shaft, and a built-in safety clutch helps protect the gears from excessive loads. This version also has a 5×1.5 mm extended motor shaft.
Key specifications:
voltage | no-load performance | stall extrapolation |
---|---|---|
4.5 V | 150 RPM, 130 mA | 1.8 kg⋅cm (25 oz⋅in), 1.25 A |
Dimensions
Size: | 36.5 x 20 x 27.4 mm1 |
---|---|
Shaft diameter: | 3 mm2 |
General specifications
Shaft type: | offset 3mm D |
---|---|
Typical operating voltage: | 4.5 V |
Gear ratio: | 120:1 |
No-load speed @ 4.5V: | 150 rpm |
No-load current @ 4.5V: | 130 mA |
Stall current @ 4.5V: | 1250 mA |
Stall torque @ 4.5V: | 25 oz·in3 |
Extended motor shaft?: | Y |
Notes
1. See drawing for detailed dimensions.
2. D Shaft.
3. The gearbox's built-in clutch might start slipping at a lower torque.





New Products
-
Sold out
1-Port VINT Hub Phidget
Vendor:PhidgetsRegular price Rs. 2,699.00Regular priceUnit price / perSold out -
ACS37220LEZATR-100B3 Current Sensor Large Carrier -100A to +100A, 3.3V
Vendor:POLOLURegular price Rs. 829.00Regular priceUnit price / perSold out -
CT433-HSWF50MR TMR Current Sensor Compact Carrier -50A to +50A, 3.3V
Vendor:POLOLURegular price Rs. 1,039.00Regular priceUnit price / perSold out -
A5984 Stepper Motor Driver Carrier, Adjustable Current, Blue Edition
Vendor:POLOLURegular price Rs. 409.00Regular priceUnit price / perSold out -
A5984 Stepper Motor Driver Carrier, Fixed 1A@5V / 660mA@3.3V, Blue Edition (Soldered Header Pins)
Vendor:POLOLURegular price Rs. 489.00Regular priceUnit price / perSold out -
A5984 Stepper Motor Driver Carrier, Fixed 500mA@5V / 330mA@3.3V (Soldered Header Pins)
Vendor:POLOLURegular price Rs. 469.00Regular priceUnit price / perSold out -
Sold out
T Connector Male-Female Pair
Vendor:POLOLURegular price Rs. 169.00Regular priceUnit price / perSold out -
Pololu Reverse Voltage Protector, 4-60V, 10A
Vendor:POLOLURegular price Rs. 159.00Regular priceUnit price / perSold out -
Pololu Reverse Voltage Protector, 4-60V, 12A
Vendor:POLOLURegular price Rs. 199.00Regular priceUnit price / perSold out -
Pololu Ideal Diode Reverse Voltage Protector, 4-60V, 10A
Vendor:POLOLURegular price Rs. 179.00Regular priceUnit price / perSold out -
Pololu Ideal Diode Reverse Voltage Protector, 4-60V, 12A
Vendor:POLOLURegular price Rs. 229.00Regular priceUnit price / perSold out -
Pololu Mini Plastic Gearmotor Bracket Pair - Tall
Vendor:POLOLURegular price Rs. 599.00Regular priceUnit price / perSold out -
Ribbon Cable with Pre-Crimped Terminals 10-Color M-F 6" (15 cm)
Vendor:POLOLURegular price Rs. 149.00Regular priceUnit price / perSold out -
Ribbon Cable with Pre-Crimped Terminals 10-Color M-F 12" (30 cm)
Vendor:POLOLURegular price Rs. 279.00Regular priceUnit price / perSold out -
Wires with Pre-Crimped Terminals 10-Pack M-F 6"
Vendor:POLOLURegular price Rs. 339.00Regular priceUnit price / perSold out -
Ribbon Cable Premium Jumper Wires 10-Color M-M 6" (15 cm)
Vendor:POLOLURegular price Rs. 209.00Regular priceUnit price / perSold out -
Ribbon Cable Premium Jumper Wires 10-Color F-F 6" (15 cm)
Vendor:POLOLURegular price Rs. 209.00Regular priceUnit price / perSold out -
Ribbon Cable Premium Jumper Wires 10-Color M-F 6" (15 cm)
Vendor:POLOLURegular price Rs. 209.00Regular priceUnit price / perSold out -
Sold out
Pololu 30T Track Set - Black
Vendor:POLOLURegular price Rs. 1,809.00Regular priceUnit price / perSold out -
Pololu High-Power Stepper Motor Driver 36v8
Vendor:POLOLURegular price Rs. 3,119.00Regular priceUnit price / perSold out -
Sold out
Pololu USB AVR Programmer v2.1
Vendor:POLOLURegular price Rs. 1,239.00Regular priceUnit price / perSold out -
3-Channel Wide FOV Time-of-Flight Distance Sensor for TI-RSLK MAX Using OPT3101
Vendor:POLOLURegular price Rs. 6,289.00Regular priceUnit price / perSold out -
75:1 Micro Metal Gearmotor MP 6V with 12 CPR Encoder, Side Connector
Vendor:POLOLURegular price Rs. 3,149.00Regular priceUnit price / perSold out -
Happy hacker bundle - Crazyflie 2.1 Brushless
Vendor:BitcrazeRegular price Rs. 62,804.00Regular priceUnit price / perSold out -
Lighthouse explorer bundle - Crazyflie 2.1 Brushless
Vendor:BitcrazeRegular price Rs. 129,999.00Regular priceUnit price / perRs. 131,985.00Sale price Rs. 129,999.00Sold out