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Authorized Repair Service

Potomac Electric
Potomac Electric
Bridgeport Servo Motor Repair
Bridgeport Servo Motor Repair, Refurbishment, and Replacements

Potomac Repair Services offers 20 years of experience in servo motor and servo drive repairs for Bridgeport machines. We also manufacture and design Form, Fit, and Function replacement parts.

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Potomac Electric is the industry leader in manufacturing replacement servomotors for Bridgeport CNC machines. Working on Bridgeport (now Hardinge) servo motors for many years, Potomac Electric has developed new, high-energy replacement servo motors. Engineered and manufactured in the US, these new servo motors feature a compact size and a new, high-quality silver commutator. DC servo motors and servo drives have continued to be the workhorse of the CNC industry. This is why Potomac Electric has invested in designing a new line of DC servo motors to support industry needs. Potomac Electric's excellent technical support and experienced engineers will ensure that every customer will benefit from upgrading to Potomac Electric servomotors.

Among the servo motors you may find on your Bridgeport CNC machines are motors from companies such as SEMCMC Torque SystemsPowertronContraves, and a few others. Potomac Electric makes replacement servo motors for all of the brands.

Bridgeport Model # Potomac Electric Part #
Bridgeport EZ Track MTE 4107.DF
Bridgeport EZ Path Lathe MTE 4229.CF
Bridgeport EZ Path (Z axis only) MTE 4239.CF
Bridgeport V2E3 MTE V2E3
Bridgeport V2XT MTE V2XT
Bridgeport Explorer, Series I and Series II ( p/n 3154-2061, 3154-2060, and 3194-3153) MTE 4110.CF
Bridgeport R2E4 Series I MTE4107.CF
Bridgeport R2E4 Series II Boss, and Boss 9 MTE 4243.CA
Bridgeport R2E3 Series I MTE R2E3
Bridgeport Interact 1, 2 (Heidenhain control 2500 only) MTE 4240.CF
Bridgeport Torque Cut 20, 30 with Parvex Motor Only repairs are offered for this motor.


In the 1990s, the majority of machine manufacturers shifted from brushed servo motors to brushless servo motors as the cost of brushless technology had decreased. The higher speeds and absence of brush maintenance in brushless servo motors offered favorable advantages. As DC brush-type servo motors became less attractive, machine builders slowly phased out this technology. As a result, the price and delivery of the DC brush servo motors increased dramatically. Potomac Electric has set a goal to fill such a void in the machine tool industry with high-quality DC brush servo motors at a low cost.

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 of maintaining machinery. Please drop us a note on our Inquiry and Quotes page with any questions.

Many of the servomotors listed above are in stock and waiting for your order, so please call for details at (617) 364-0400. Servomotor models that do not appear in this list may be in our Parts Inventory, so contact us with any inquiries for small lot production.