Products for USB Sensing and Control
3264_1 - 12V/8.4Kg-cm/28RPM 139:1 DC Gear Motor
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Product Features

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

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.

This revision of the 3264 is made by a different manufacturer and may have slightly different performance.

Motor Controller and Connection

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.

Related Products

The mounting holes on this motor are compatible with the 3337 - Mounting Bracket (NEMA11).



Product Specifications

Motor Properties

Motor TypeDC Motor
Output Power (Mechanical)2.9 W
Maximum Speed at Rated Voltage28 RPM
Rated Torque8.5 kg·cm
Stall Torque50 kg·cm

Electrical Properties

Rated Voltage12 V DC
Rated Current410 mA
Stall Current1.5 A

Physical Properties

Shaft Diameter6 mm
Weight192 g
Recommended Wire Size (Motor)20 - 25 AWG

Gearbox Specifications

Gearbox TypePlanetary
Gear Ratio139 1841221 : 1
Number of Gear Trains3
Maximum Strength of Gears30 kg·cm
Shaft Maximum Axial Load35 N
Shaft Maximum Radial Load25 N
Backlash Error


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.