Products for USB Sensing and Control
Products for USB Sensing and Control

12V/8.4Kg-cm/28RPM 139:1 DC Gear Motor

ID: 3264_0

This DC motor has a 139:1 gearbox, a rated speed of 28 RPM and rated torque of 8.46 Kg·cm.


Replaced by the 3264_1 – 12V/8.4Kg-cm/28RPM 139:1 DC Gear Motor

The 3264 is a 12 volt gear motor, generating 8.46 Kg-cm of torque at 28 RPM. This motor is quite compact considering the amout of power it can output.

The planetary gearbox on this motor is more sophisticated than a typical spur gearbox and will provide greater efficiency, higher torque, and quieter motor operation.


warning The torque this motor produces when it stalls exceeds the rated strength of the gearbox. This means that stalling or very heavily loading this motor can cause serious damage to the gearbox. To avoid damage, avoid sudden loads or any load higher than the Maximum Strength of Gears spec.

Product Specifications

Motor Properties
Motor Type DC Motor
Output Power (Mechanical) 2.9 W
Rated Speed 28 RPM
Rated Torque 8.5 kg·cm
Stall Torque 50 kg·cm
Electrical Properties
Rated Voltage 12 V DC
Rated Current 410 mA
Stall Current 1.5 A
Physical Properties
Shaft Diameter 6 mm
Weight 192 g
Recommended Wire Size (Motor) 20 - 25 AWG
Gearbox Specifications
Gearbox Type Planetary
Gear Ratio 139 1841221 : 1
Number of Gear Trains 3
Maximum Strength of Gears 30 kg·cm
Shaft Maximum Axial Load 35 N
Shaft Maximum Radial Load 25 N
Backlash Error
Customs Information
Canadian HS Export Code 8501.10.00
American HTS Import Code 8501.10.40.60
Country of Origin CN (China)
The 3264 DC motor connects to either of the following controllers:

You'll need to solder wires to the contacts of the motor in order to connect it to a controller.