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


Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
+1 403 282-7335

42DMW61 NEMA17 Gearless Brushless Motor

ID: DCM4100_0
Recommended for new designs: Phidgets Inc. is not the original manufacturer for this product, but we intend to sell it (or a similar replacement with a compatible form, fit and function) for as long as it is available from the supplier.

This compact, affordable 8-pole BLDC motor can output 1.3kg-cm of torque at speeds of up to 4000 RPM.


Quantity Available: 148

Qty Price
5 $34.56
10 $33.12
25 $32.40
50 $31.68
100 $30.96

The DCM4100 is a 24 volt brushless DC motor, generating 1.27 Kg-cm of torque at 4000 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.


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.

Comes Packaged with:

BLDC wiring

This motor comes with a 5-Pin molex connector soldered to the hall effect wires, and ferrules crimped onto the motor wires so it can quickly and easily be connected to the Brushless DC Motor Phidget as shown in the functional picture.

Motor Controllers

TerminalMotor Wire

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
Image Part Number Price Controlled By Number of Motor Ports
DCC1100_0 $65.00 VINT 1

Shaft Couplers

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
Image Part Number Price Inner Diameter Material Coupling Rated Torque Coupling Rated Speed Torsional Stiffness
3421_0 $7.50 5 mm Aluminium 4.1 kg·cm 10000 RPM 100 N·m/rad
TRM4311_0 $2.25 5 mm Aluminum 35.7 kg·cm 12000 RPM
TRM4333_0 $3.35 5 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 5mm bore pulleys and sprockets:

Product Physical Properties
Image Part Number Price Inner Diameter Number of Teeth
TRM4100_0 $2.25 5 mm 16

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 motor.

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

Product Specifications

Motor Properties
Motor Type Brushless DC Motor
Number of Poles 8
Manufacturer Part Number 42DMW61-2440
Output Power (Mechanical) 50 W
Rated Torque 1.3 kg·cm
Rated Speed 4000 RPM
Electrical Properties
Rated Current 3.5 A
Rated Voltage 24 V DC
Coil Resistance 740 mΩ
Physical Properties
Shaft Diameter 5 mm
Mounting Plate Size 17
Operating Temperature Min -20 °C
Operating Temperature Max 40 °C
Customs Information
Canadian HS Export Code 8501.31.00
American HTS Import Code 8501.31.20.00
Country of Origin CN (China)


Here's a list of our brushless DC motors:

Product Motor Properties Gearbox Properties
Image Part Number Price Rated Speed Rated Torque Gear Ratio
DCM4100_0 $36.00 4000 RPM 1.3 kg·cm
DCM4101_0 $72.00 810 RPM 5.6 kg·cm 4 7/8 : 1
DCM4102_0 $74.00 260 RPM 15.3 kg·cm 14 70/121 : 1
DCM4103_0 $76.00 166 RPM 24.5 kg·cm 23 49/64 : 1
DCM4104_0 $80.00 70 RPM 51 kg·cm 55 833/1331 : 1
DCM4105_0 $85.00 38 RPM 193.7 kg·cm 105 5/8 : 1
DCM4106_0 $42.00 4000 RPM 2.8 kg·cm
DCM4107_0 $84.00 930 RPM 12.2 kg·cm 4 1/4 : 1
DCM4108_0 $86.00 250 RPM 37.7 kg·cm 15 3/10: 1
DCM4109_0 $88.00 170 RPM 57.1 kg·cm 22 2/3 : 1
DCM4110_0 $95.00 82 RPM 102 kg·cm 46 82/125 : 1
DCM4111_0 $98.00 41 RPM 214.1 kg·cm 96 1/3 : 1
DCM4112_0 $65.00 4000 RPM 5 kg·cm