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Brush DC Motors - BDC Series from SL-MTI
SL Montevideo Technology, Inc.,
BDC Series
Brush DC motors for specialized applications
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brushless motors, brush motors, induction motors, and controllers from SL Montevideo Technology, Inc. Brushless Motors from SL-MTI
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BDC Series
Brush DC motors for specialized applications

BDC motors provide a solution wherever there is a distinct preference for the characteristics of a brush DC motor design - such as inherent control simplicity. Design features include an adherence to military standards, making them suitable for use in both aerospace and military applications. In addition, they include custom features as requested by respective manufacturers.

SL-MTI designs and manufactures custom, open frame, high-torque brush torquers for the avionic and aerospace markets. The designs are built to the most critical specifications in the small motor industry. We utilize our own transfer molding technology to seal the windings from harsh environments and contaminants. This epoxy molding process was developed to ensure the highest reliable motor design available.

SL-MTI also manufactures high quality, high performance Micromotors and Servo Motors in the Motion Control Markets. These designs incorporate the latest in materials and processes to satisfy multiple uses and applications.

To find a brush DC motor to best meet your needs, please use the Dynamic Web Tool to the right.


Find and customize a brush DC motor to meet your needs
  • Click the model you are interested in below, or use our Search Tool for brush DC motors to find a motor of correct size.
  • Once a motor has been found to meet your needs, our dynamic web tool allows you to further customize it.
  • Complete the contact form, and your new requirements will be sent to SL-MTI marketing automatically.

Fields of Applications

SL-MTI has designed many of these types of brush motors in the following systems:

  • Avionic flight heading instruments for all types of aircraft
  • Autopilot mechanisms
  • Fuel monitoring systems
  • Missile fin control systems
  • Navigation devices
  • Seeker and gimbal systems
  • Optical sight mechanisms
  • Capstand and reel recorder systems for aircraft
  • Small radar systems
  • Missile seeker and guidance control systems
Design Features
  • Extended shelf life processing for reliable first time start up
  • Specialized brush materials for extremely low voltage drop for low voltage operation
  • Mechanical and performance stability at high shock loads and vibrations.
  • Alnico and rare earth magnet materials are used
  • High temperature insulation systems for 180°C environments or higher
  • High altitude operation component design
Brush DC Motors
Model Number Size Parameters
Housed Max. Continuous Stall Torque, Tcs Inertia, Jm Motor Constant, Km Thermal Resistance, tr
oz-in oz-in-S2×10-4 oz-in/Watt½ °C/W
BDC-08-01-2P 0.55 0.227 0.42 42.3
BDC-09-01-2P 0.62 0.255 0.45 38
BDC-09-02-2P 1.07 0.429 0.7 26.4
BDC-09-03-2P 1.24 0.47 0.71 24
BDC-15-01-2P 4.69 2.2 2.4 18.9
BDC-15-02-2P 8.02 3.8 3.2 13.3
BDC-15-03-2P 14.11 4.6 5.1 9.4
BDC-15-04-2P 17.3 5.8 5.7 7.7
BDC-21-02-4P 16.66 0.4 4.16 4.5
BDC-21-04-4P 31.18 0.51 7.35 4
BDC-21-06-4P 43.77 0.7 9.87 3.5
BDC-21-08-4P 57.8 0.966 11.8 3
BDC-21-10-4P 75.21 1.33 14.8 2.8
BDC-21-12-4P 85.79 1.84 16.6 2.7


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© 2004, SL Montevideo Technology, Inc
Please report any problems with this website to
2002 Black Oak Ave
Montevideo, MN 56265
(320) 269-6562