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SL013CH038 Series
Slotless BLDC Motor

Features and Benefits:
  • Extremely quick response and high acceleration
  • Quiet Operation
  • High power density
  • Wide speed range (up to 40,000 rpm)


Model #Frame sizeNominal VoltageNo Load SpeedNo Load CurrentMax speedRated CurrentSpeed Torque GradientRated TorqueWeight, lbsAvailability
SL013CH038-010.510 in6 VDC23700 RPM215 mA40000 RPM2.33 A153.5073 RPM/oz-in0.7151 oz-in0.064 lbsonline
SL013CH038-020.510 in9 VDC23400 RPM185 mA40000 RPM1.7 A122.3527 RPM/oz-in0.7874 oz-in0.064 lbsonline
SL013CH038-030.510 in12 VDC23000 RPM140 mA40000 RPM1.23 A123.0608 RPM/oz-in0.7803 oz-in0.064 lbsonline
SL013CH038-040.510 in18 VDC23400 RPM121 mA40000 RPM0.91 A115.1305 RPM/oz-in0.7888 oz-in0.064 lbsonline
SL013CH038-050.510 in24 VDC24500 RPM90 mA40000 RPM0.63 A133.1152 RPM/oz-in0.7265 oz-in0.064 lbsonline
SL013CH038-060.510 in36 VDC25600 RPM84 mA40000 RPM0.49 A106.2089 RPM/oz-in0.7859 oz-in0.064 lbsonline

Motor Operating Specifications

Axial play0.002 in
Radial playPreloaded
Max. force for press fits (static)2.248 lbf
Ambient Temperature-40 ° to 212.00 °F
Max winding temperature311.00 °F
Thermal resistance (Housing-Ambient)73.40 °F/W
Thermal resistance (Winding-Housing)35.40 °F/W
Thermal time constant motor350 s
Thermal time constant winding0.48 s
Number of pole pairs1


ModelDIM. A (length) in
SL013CH038-011.470 in
SL013CH038-021.470 in
SL013CH038-031.470 in
SL013CH038-041.470 in
SL013CH038-051.470 in
SL013CH038-061.470 in

Torque Curves

Slotless chart
Slotless chart
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Slotless chart
Slotless chart
Slotless chart

Features And Benefits

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A typical brushless BLDC motor is constructed using a stator with “slots”; a copper wire is then wound around these slots. Although this technology works well, it has an inherent problem with cogging (or drag torque), which presents a challenge in applications needing fast response, fast acceleration and smooth operation.


To combat these issues, we’ve removed the slots from the motor. Instead of slots, we’re using a unique process of winding the copper wire without the need of them. This drastically reduces cogging and improves the motor’s ability to respond, accelerate quickly, and operate smoothly. Slotless BLDC motors are also quieter and provide more power with a smaller frame size than their slotted counterparts.

Reliable long life expectancy

Our motors are built to withstand at least 20,000 hours of continuous (24/7) operation. This means that you can feel confident that even your most sensitive application will operate reliably for a very long time.


Nearly silent operation

Detent torque is the biggest culprit of generated noise. Removing the slots and thus eliminating the detent torque drastically reduces the noise output of the motor.


Modular design for better customization

The modular design lets us combine the motor with a gearhead to match your specific speed and torque requirements. Also, our slotless BLDC motors are available in many windings so we can satisfy your requirements precisely. You can also customize the motor with sensors such as an optical encoder or hall sensor to provide accurate positioning control, velocity, and direction feedback.


Cost effective

Our unique manufacturing process lets us create motors that are built to your exact specifications, while remaining highly cost effective. Get exactly what you need without breaking your budget.

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Slotless BLDC Motor Applications


  • Robotic grippers and claws
  • Medical and surgical tools
  • Miniature pumps and ventilators
  • Testing and measuring equipment
  • Semiconductor handling equipment
  • Robotics
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Slotless BLDC Motor Construction

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SL013CH038-3D-Model (STEP)

Get the motor you need

Just fill out a Request for a Quote form, and tell us about your application and your needs. One of our applications specialists will review your request, and provide you with a quote promptly.