Products for USB Sensing and Control

Products for USB Sensing and Control

12V/17.3Kg-cm/18RPM 139:1 DC Gear Motor

ID: 3268_0
This DC motor has a 139:1 gearbox, a rated speed of 18 RPM and rated torque of 17.3 Kg·cm.

Replaced by 3268_1

The 3268 is a 12 volt gear motor, generating 17.3 Kg-cm of torque at 18 RPM. Since this motor has a lower power output for its size, you can expect it to have a longer lifespan than other motors.

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.

Warnings

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) 3.8 W
Maximum Speed at Rated Voltage 18 RPM
Rated Torque 17.3 kg·cm
Stall Torque 128 kg·cm
Electrical Properties
Rated Voltage 12 V DC
Rated Current 650 mA
Stall Current 2.4 A
Physical Properties
Shaft Diameter 8 mm
Wire Length 350 mm
Weight 526 g
Gearbox Specifications
Gearbox Type Planetary
Gear Ratio 139 1841221 : 1
Number of Gear Trains 3
Maximum Strength of Gears 61 kg·cm
Shaft Maximum Axial Load 50 N
Shaft Maximum Radial Load 35 N
Backlash Error

DC Motor Controllers

DC motors can be simply connected to a power supply according to their rated voltage in order to make them run, but if you want to have control over direction, velocity, and acceleration in real-time, you'll need to use a motor controller. In order to connect this motor to a controller, you can connect the wires to the motor terminal on the controller. Don't worry about wiring the motor backwards; doing so will only reverse the direction of rotation.

Product Controller Properties Electrical Properties Board Properties
Image Part Number Price Number of Motor Ports Velocity Resolution Acceleration Resolution Continuous Motor Current Max Controlled By
1064_1 $120.00 2 0.79 % Duty Cycle 1.9 % Duty Cycle/s (per motor) 14 A USB
1065_0 $80.00 1 0.39 % Duty Cycle 24.5 % Duty Cycle/s 5 A USB
DCC1000_0 $75.00 1 0.001 % Duty Cycle 1 % Duty Cycle/s 25 A VINT

Shaft Couplers

If you need to connect the main shaft of this motor to another device with a shaft, you can use a shaft coupler:

Product Physical Properties
Image Part Number Price Inner Diameter Material Coupling Rated Torque Coupling Rated Speed Torsional Stiffness
3423_0 $7.50 8 mm Aluminium 4.1 kg·cm 10000 RPM 100 N·m/rad
3427_0 $7.50 8 mm Aluminium 60.7 kg·cm 16000 RPM 63 N·m/rad
TRM4313_0 $2.80 8 mm Aluminum 35.7 kg·cm 12000 RPM
TRM4334_0 $3.35 8 mm Aluminium 10 kg·cm 8000 RPM 110 N·m/rad

Pulleys and Sprockets

If you're using this motor to drive a rotary system that requires a lot of torque, you may be interested in pulleys and sprockets. By using a two pulleys or sprockets of different sizes, you can increase the gear ratio of the motor. Pulleys and sprockets can also be used to transmit the motor's rotation over a long distance. For more guidance on building a transmission system, visit our Rotary Motion Primer. Here is a list of our 8mm bore pulleys and sprockets:

Product Physical Properties
Image Part Number Price Inner Diameter Number of Teeth
TRM4102_0 $2.25 8 mm 22
TRM4103_0 $2.25 8 mm 32
TRM4104_0 $2.45 8 mm 44
TRM4105_0 $3.00 8 mm 60
TRM4106_0 $3.70 8 mm 80
TRM4111_0 $2.25 8 mm 12
TRM4112_0 $3.15 8 mm 24
TRM4113_0 $4.45 8 mm 34
TRM4114_0 $6.70 8 mm 50
TRM4135_0 $1.85 8 mm 10
TRM4158_0 $3.25 8 mm 44

Mounting Brackets

Mounting this motor to a flat surface is easy with these metal mounting brackets. The holes on the bracket match those on the front of the gearbox. The following brackets will fit the mounting holes on this motor:

Product Physical Properties
Image Part Number Price Mounting Plate Size Material
3338_0 $3.50 NEMA - 17 Mild Steel (Coated)

Rotary Bearings

Systems with heavy loads or pulley/sprocket assemblies often put a lot of sideways strain on the motor shaft. If you're using this motor to drive such a system, you can use rotary bearings to protect the motor:

Product Physical Properties Mechanical Properties
Image Part Number Price Inner Diameter Bearing Type Static Load Dynamic Load
TRM4500_0 $4.00 8 mm Rotary Shaft (Flanged) 1.3 kN 3.3 kN
TRM4501_0 $4.25 8 mm Rotary Shaft (Pillow Block) 1.3 kN 3.3 kN

Here's a list of our DC motors:

Product Motor Properties Physical Properties Gearbox Specifications
Image Part Number Price Maximum Speed at Rated Voltage Rated Torque Shaft Diameter Weight Gear Ratio Gearbox Type
3254_0 $10.00 230 RPM 200 g·cm 6 mm 128 g 10 : 1 Spur
3255_0 $10.00 127 RPM 310 g·cm 6 mm 133 g 18 : 1 Spur
3256_0 $11.00 46 RPM 820 g·cm 6 mm 137 g 50 : 1 Spur
3257_0 $11.00 23 RPM 1.6 kg·cm 6 mm 136 g 100 : 1 Spur
3260_0 $15.00 73 RPM 6.1 kg·cm 6 mm 284 g 50 : 1 Spur
3261_0 $18.00 1080 RPM 240 g·cm 6 mm 144 g 3 1217 : 1 Planetary
3262_0 $18.00 285 RPM 900 g·cm 6 mm 170 g 13 212289 : 1 Planetary
3263_1 $20.50 78 RPM 3.1 kg·cm 6 mm 193 g 50 801895 : 1 Planetary
3264_1 $20.50 28 RPM 8.5 kg·cm 6 mm 192 g 139 1841221 : 1 Planetary
3265_0 $38.00 670 RPM 540 g·cm 8 mm 416 g 3 1217 : 1 Planetary
3266_0 $42.00 175 RPM 1.9 kg·cm 8 mm 464 g 13 212289 : 1 Planetary
3267_0 $43.00 49 RPM 6.6 kg·cm 8 mm 526 g 50 801895 : 1 Planetary
3268_1 $43.00 18 RPM 17.3 kg·cm 8 mm 526 g 139 1841221 : 1 Planetary
3269_2 $69.00 588 RPM 5.1 kg·cm 12 mm 1.3 kg 4 14 : 1 Planetary
3270_1 $66.00 192 RPM 14.3 kg·cm 12 mm 1.5 kg 12 2425 : 1 Planetary
3271_1 $66.00 139 RPM 20.4 kg·cm 12 mm 1.5 kg 18 116 : 1 Planetary
3272_1 $72.00 53 RPM 51 kg·cm 12 mm 1.7 kg 46 82125 : 1 Planetary
3273_1 $72.00 33 RPM 82.6 kg·cm 12 mm 1.7 kg 76 4964 : 1 Planetary
3274_1 $76.00 15 RPM 173 kg·cm 12 mm 2 kg 167 601625 : 1 Planetary

Here's a list of DC motors with encoders attached:

Product Motor Properties Physical Properties Gearbox Specifications
Image Part Number Price Maximum Speed at Rated Voltage Rated Torque Shaft Diameter Weight Gear Ratio Gearbox Type
3254E_0 $40.00 230 RPM 200 g·cm 6 mm 131 g 10 : 1 Spur
3255E_0 $40.00 127 RPM 310 g·cm 6 mm 136 g 18 : 1 Spur
3256E_0 $41.00 46 RPM 820 g·cm 6 mm 140 g 50 : 1 Spur
3261E_0 $48.00 1080 RPM 240 g·cm 6 mm 147 g 3 1217 : 1 Planetary
3262E_0 $48.00 285 RPM 900 g·cm 6 mm 174 g 13 212289 : 1 Planetary
3263E_1 $50.50 78 RPM 3.1 kg·cm 6 mm 193 g 50 801895 : 1 Planetary
3264E_1 $50.50 28 RPM 8.5 kg·cm 6 mm 195 g 139 1841221 : 1 Planetary
3265E_0 $68.00 670 RPM 540 g·cm 8 mm 419 g 3 1217 : 1 Planetary
3266E_0 $72.00 175 RPM 1.9 kg·cm 8 mm 467 g 13 212289 : 1 Planetary
3267E_0 $73.00 49 RPM 6.6 kg·cm 8 mm 529 g 50 801895 : 1 Planetary