The DCM4103 is a 24 volt brushless DC motor, generating 24.5 Kg-cm of torque at 166 RPM.
Brushless DC motors provide convenient position and velocity control through the use of their built in hall-effect sensor. They run quieter and last longer than their brushed counterparts. The 24:1 planetary gearbox on this motor results in higher torque at the cost of speed.
This motor must be controlled by a brushless DC motor controller that has the capability to both send control signals to the three motor wires, and also read the hall-effect feedback from the other five wires. Have a look at the Connection & Compatibility tab for a list of compatible Phidget controllers.
| Motor Properties | |
|---|---|
| Motor Type | Brushless DC Motor | 
| Number of Poles | 8 | 
| Manufacturer Part Number | 42JXG50K(24)/42DMW61-2440 | 
| Output Power (Mechanical) | 50 W | 
| Rated Torque | 24.5 kg·cm | 
| Rated Speed | 166 RPM | 
| Electrical Properties | |
| Rated Current | 3.5 A | 
| Rated Voltage | 24 V DC | 
| Coil Resistance | 740 mΩ | 
| Physical Properties | |
| Shaft Diameter | 8 mm | 
| Mounting Plate Size | 17 | 
| Operating Temperature Min | -20 °C | 
| Operating Temperature Max | 40 °C | 
| Gearbox Properties | |
| Gearbox Type | Planetary Gearbox | 
| Gear Ratio | 23 49⁄64 : 1 | 
| Customs Information | |
| Canadian HS Export Code | 8501.31.00 | 
| American HTS Import Code | 8501.31.20.00 | 
| Country of Origin | CN (China) | 
| Terminal | Motor Wire | 
|---|---|
| A | Red | 
| B | Yellow | 
| C | Black | 
This motor must be controlled by a brushless DC motor controller. This diagram shows how to connect the motor wires to the controller.
Note: Because of the way this motor is built, you'll need to set negative P, I and D values when using the MotorPositionController object.
Note: Make sure to unplug the power cord from the motor controller before switching wires around.
The following brushless controllers can be used to drive this motor:
| Product | Board Properties | Controller Properties | Electrical Properties | |||
|---|---|---|---|---|---|---|
| Part Number | Price | Controlled By | Number of Motor Ports | Velocity Resolution | Continuous Motor Current Max | Supply Voltage Max | 
			![]() 30V 50A Brushless DC Motor Phidget 
			 | 
			$160.00 | VINT | 1 | 0.00078 Duty Cycle | 50 A | 30 V DC | 
			![]() Brushless DC Motor Phidget 
			 | 
			$70.00 | VINT | 1 | 0.003 Duty Cycle | 20 A | 30 V DC | 
If you need to connect the main shaft of this motor to the shaft of another device, you can use a shaft coupler:
| Product | Physical Properties | |||||
|---|---|---|---|---|---|---|
| Part Number | Price | Inner Diameter | Material | Coupling Rated Torque | Coupling Rated Speed | Torsional Stiffness | 
			![]() Spiral Beam Coupling 8mm - 8mm 
			 | 
			$3.35 | 8 mm | Aluminium | 10 kg·cm | 8000 RPM | 110 N·m/rad | 
			![]() Jaw Coupling Half 8mm Series 12 
			 | 
			$3.00 | 8 mm | Aluminum | 35.7 kg·cm | 12000 RPM | — | 
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 Guide. Here is a list of our 8mm bore pulleys and sprockets:
| Product | Physical Properties | ||
|---|---|---|---|
| Part Number | Price | Inner Diameter | Number of Teeth | 
			![]() #25 Chain Sprocket with 8mm Bore and 10 Teeth  
			 | 
			$3.00 | 8 mm | 10 | 
			![]() GT2 Idler Pulley 8mm Bore with Spacers 
			 | 
			$5.50 | 8 mm | 44 | 
			![]() GT2 Idler Pulley with 8mm Bore and 44 Teeth 
			 | 
			$1.75 | 8 mm | 44 | 
			![]() GT2 Pulley with 8mm Bore and 22 Teeth 
			 | 
			$2.75 | 8 mm | 22 | 
			![]() GT2 Pulley with 8mm  Bore and 32 Teeth 
			 | 
			$2.50 | 8 mm | 32 | 
			![]() GT2 Pulley with 8mm  Bore and 44 Teeth 
			 | 
			$3.00 | 8 mm | 44 | 
			![]() GT2 Pulley with 8mm  Bore and 60 Teeth 
			 | 
			$3.00 | 8 mm | 60 | 
			![]() GT2 Pulley with 8mm  Bore and 80 Teeth 
			 | 
			$4.00 | 8 mm | 80 | 
			![]() GT5 Pulley with 8mm Bore and 12 Teeth 
			 | 
			$3.00 | 8 mm | 12 | 
			![]() GT5 Pulley with 8mm Bore and 24 Teeth 
			 | 
			$3.15 | 8 mm | 24 | 
			![]() GT5 Pulley with 8mm Bore and 34 Teeth 
			 | 
			$4.45 | 8 mm | 34 | 
			![]() GT5 Pulley with 8mm Bore and 50 Teeth 
			 | 
			$6.70 | 8 mm | 50 | 
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.
| Product | Physical Properties | ||
|---|---|---|---|
| Part Number | Price | Mounting Plate Size | Material | 
			![]() Motor Mounting Bracket (NEMA 17) 
			 | 
			$3.50 | NEMA - 17 | Mild Steel (Coated) | 
| Product | Motor Properties | Gearbox Properties | ||
|---|---|---|---|---|
| Part Number | Price | Rated Speed | Rated Torque | Gear Ratio | 
			![]() NEMA17 - Brushless DC Motor - Gearless 
			 | 
			$42.00 | 4000 RPM | 1.3 kg·cm | — | 
			![]() NEMA17 - Brushless DC Motor - Gearless 
			 | 
			$36.00 | 4000 RPM | 1.3 kg·cm | — | 
			![]() NEMA17 - Brushless DC Motor - 4.9:1 Gearbox 
			 | 
			$72.00 | 810 RPM | 5.6 kg·cm | 4 7⁄8 : 1 | 
			![]() NEMA17 - Brushless DC Motor - 15:1 Gearbox 
			 | 
			$74.00 | 260 RPM | 16.3 kg·cm | 14 70⁄121 : 1 | 
			![]() NEMA17 - Brushless DC Motor - 24:1 Gearbox 
			 | 
			$90.00 | 166 RPM | 24.5 kg·cm | * 23 49⁄64 : 1 | 
			![]() NEMA17 - Brushless DC Motor - 24:1 Gearbox 
			 | 
			$76.00 | 166 RPM | 24.5 kg·cm | 23 49⁄64 : 1 | 
			![]() NEMA17 - Brushless DC Motor - 56:1 Gearbox 
			 | 
			$80.00 | 70 RPM | 61.2 kg·cm | 55 833⁄1331 : 1 | 
			![]() NEMA17 - Brushless DC Motor - 106:1 Gearbox 
			 | 
			$85.00 | 38 RPM | 96.9 kg·cm | 105 5⁄8 : 1 | 
			![]() NEMA23 - Brushless DC Motor - Gearless 
			 | 
			$42.00 | 4000 RPM | 2.9 kg·cm | — | 
			![]() NEMA23 - Brushless DC Motor - 4.3:1 Gearbox 
			 | 
			$84.00 | 930 RPM | 10.2 kg·cm | 4 1⁄4 : 1 | 
			![]() NEMA23 - Brushless DC Motor - 15:1 Gearbox 
			 | 
			$86.00 | 250 RPM | 33.7 kg·cm | 15 3⁄10 : 1 | 
			![]() NEMA23 - Brushless DC Motor - 23:1 Gearbox 
			 | 
			$88.00 | 170 RPM | 51 kg·cm | 22 2⁄3 : 1 | 
			![]() NEMA23 - Brushless Motor with 47:1 Gearbox 
			 | 
			$95.00 | 82 RPM | 112.2 kg·cm | 46 82⁄125 : 1 | 
			![]() NEMA23 - Brushless DC Motor - 96:1 Gearbox 
			 | 
			$98.00 | 41 RPM | 214.1 kg·cm | 96 1⁄3 : 1 | 
			![]() NEMA23 - Brushless DC Motor - Gearless 
			 | 
			$65.00 | 4000 RPM | 5 kg·cm | — |