POLOLU
30:1 Micro Metal Gearmotor HPCB 12V
30:1 Micro Metal Gearmotor HPCB 12V
SKU:Pololu-3038
Low stock
Couldn't load pickup availability
Share
These tiny brushed DC gearmotors are available in a wide range of gear ratios—from 5:1 up to 1000:1—and with five different motors: high-power 6 V and 12 V motors with long-life carbon brushes (HPCB), and high-power (HP), medium power (MP), and low power (LP) 6 V motors with shorter-life precious metal brushes. The 6 V and 12 V HPCB motors offer the same performance at their respective nominal voltages, just with the 12 V motor drawing half the current of the 6 V motor. The 6 V HPCB and 6 V HP motors are identical except for their brushes, which only affect the lifetime of the motor.
The HPCB versions (shown on the left in the picture below) can be differentiated from versions with precious metal brushes (shown on the right) by their copper-colored terminals. Note that the HPCB terminals are 0.5 mm wider than those on the other micro metal gearmotor versions (2 mm vs. 1.5 mm), and they are about 1 mm closer together (6 mm vs. 7 mm).
![]() |
![]() |
![]() |
Details for item #3038
Exact gear ratio: 31×33×35×3416×14×13×14≈29.86:131×33×35×3416×14×13×14≈29.86:1
This gearmotor is a miniature high-power, 12 V brushed DC motor with long-life carbon brushes and a 29.86:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.
Key specifications:
voltage | no-load performance | stall extrapolation |
---|---|---|
12 V | 1100 RPM, 60 mA | 0.39 kg⋅cm (5.4 oz⋅in), 0.75 A |
Dimensions
Size: | 10 × 12 × 26 mm1 |
---|---|
Shaft diameter: | 3 mm2 |
General specifications
Gear ratio: | 29.86:1 |
---|---|
No-load speed @ 12V: | 1100 rpm |
No-load current @ 12V: | 0.06 A |
Stall current @ 12V: | 0.75 A |
Stall torque @ 12V: | 0.39 kg·cm |
Max output power @ 12V: | 1.1 W |
No-load speed @ 6V: | 550 rpm3 |
No-load current @ 6V: | 0.05 A3 |
Stall current @ 6V: | 0.38 A3 |
Stall torque @ 6V: | 0.20 kg·cm3 |
Extended motor shaft?: | N |
Long-life carbon brushes?: | Y |
Motor type: | 0.75A stall @ 12V (HPCB 12V - carbon brush) |
Performance at maximum efficiency
Max efficiency @ 12V: | 30 % |
---|---|
Speed at max efficiency: | 840 rpm |
Torque at max efficiency: | 0.10 kg·cm |
Current at max efficiency: | 0.23 A |
Output power at max efficiency: | 0.82 W |
Notes
1. Output shaft adds 9 mm to the 26 mm length.
2. D Shaft.






New Products
-
OMY-L100 AI Manipulator Leader Arm
Vendor:RobotisRegular price Rs. 299,999.00Regular priceUnit price / per -
OMY-AI3M AI Manipulator Leader and Follower Set
Vendor:RobotisRegular price Rs. 1,699,999.00Regular priceUnit price / per -
Pololu Isolated USB-to-I²C Adapter
Vendor:POLOLURegular price Rs. 1,189.00Regular priceUnit price / per -
ACS37800KMACTR-030B3-I2C Power Monitor Carrier with Secondary I²C Isolation (Soldered Terminal Block
Vendor:POLOLURegular price Rs. 5,069.00Regular priceUnit price / per -
Pololu Isolated Solid State Relay/Switch, SPST, 30V, 11A
Vendor:POLOLURegular price Rs. 519.00Regular priceUnit price / per -
Pololu Isolated Solid State Relay/Switch, SPST, 60V, 7A
Vendor:POLOLURegular price Rs. 429.00Regular priceUnit price / per -
CT220BMV-HS5 Contactless Current Sensor Carrier ±1.5mT/15G
Vendor:POLOLURegular price Rs. 499.00Regular priceUnit price / per -
CT220RMV-HS5 Contactless Current Sensor Carrier ±15mT/150G
Vendor:POLOLURegular price Rs. 499.00Regular priceUnit price / per -
0.100" (2.54 mm) Female Header: 2x20-Pin, Straight
Vendor:POLOLURegular price Rs. 459.00Regular priceUnit price / per -
Motion Sensor Phidget
Vendor:PhidgetsRegular price Rs. 1,699.00Regular priceUnit price / per -
Sonar Phidget
Vendor:PhidgetsRegular price Rs. 2,849.00Regular priceUnit price / per -
Infinite flight bundle - Crazyflie 2.1 Brushless
Vendor:BitcrazeRegular price Rs. 130,999.00Regular priceUnit price / per -
Intel RealSense Depth Camera D435if
Vendor:Intel® RealSense™Regular price Rs. 51,299.00Regular priceUnit price / per -
Sold out
Probe Pipe Fittings 1/2"
Vendor:Atlas ScientificRegular price Rs. 2,419.00Regular priceUnit price / perSold out -
UBEC 12A (3-14S)
Vendor:HolybroRegular price Rs. 4,199.00Regular priceUnit price / per -
Analog Discovery Studio Max: Multi-Instrument Lab for Engineering Experimentation
Vendor:DigilentRegular price Rs. 217,999.00Regular priceUnit price / perSold out -
Sold out
OAK 4 D Pro Wide
Vendor:LuxonisRegular price Rs. 117,969.00Regular priceUnit price / perSold out -
Sold out
OAK 4 D Pro Fixed Focus
Vendor:LuxonisRegular price Rs. 106,719.00Regular priceUnit price / perSold out -
Sold out
OAK 4 D Pro Auto Focus
Vendor:LuxonisRegular price Rs. 106,719.00Regular priceUnit price / perSold out -
Sold out
OAK 4 D Auto Focus
Vendor:LuxonisRegular price Rs. 95,479.00Regular priceUnit price / perSold out -
Sold out
OAK 4 D Fixed Focus
Vendor:LuxonisRegular price Rs. 95,479.00Regular priceUnit price / perSold out -
Sold out
OAK 4 D Wide
Vendor:LuxonisRegular price Rs. 106,719.00Regular priceUnit price / perSold out -
Sold out
OAK-FFC IMX577 M12
Vendor:POLOLURegular price Rs. 8,499.00Regular priceUnit price / perSold out -
Pololu Ideal Diode Reverse Voltage Protector, 4-60V, 20A
Vendor:POLOLURegular price Rs. 329.00Regular priceUnit price / perSold out -
Pololu Ideal Diode Reverse Voltage Protector, 4-60V, 25A
Vendor:POLOLURegular price Rs. 439.00Regular priceUnit price / perSold out