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Authorized Repair Service

Potomac Electric
Potomac Electric

Danaher Motion Print

Kollmorgen Repair, Refurbishment, and Replacements
13-inch diameter motor rebuild
13-inch diameter motor rebuild
13-inch diameter motor rebuild

Potomac Repair Services supports many brands of Danaher servomotors and drives.

We also design and manufacture a number of Form, Fit and Function replacements. This saves a lot of money in machine maintenance and avoids costly retrofits.

Contact us. We may have already solved your problem!


Kollmorgen (now a part of the Danaher Corporation) has been manufacturing high performance AC servo, DC servo, adjustable speed, stepper, and OEM/custom drives, motors, and control systems for over 50 years. Kollmorgen's products have been used in semiconductor, medical, defence & aerospace, material handling, robotics, machine tool, power conversion, electronic assembly, alternative energy, and hybrid vehicle applications worldwide.


Working on Kollmorgen AC motors, brush and brushless servo motors and drives for over 15 years, Potomac Electric has repaired hundreds of Kollmorgen AC and DC servomotors and amplifiers. In addition, we have developed a unique capability of rewinding, magnetizing and assembling large Torque Ring Magnets. These motors are often called Torquers. The pictures to your left show the process of completely rebuilding a 13-inch diameter motor


The list of servo motors we support is constantly growing as we identify the needs of our customers. We are a small business and we understand the difficulty and cost pressure in maintaining the machinery. Please drop us a note at our Inquiry and Quotes page with any questions.


Many of the Kollmorgen servo and drives may be in our Parts Inventory so contact us with any inquiries for small lot production.