Providing gearing solutions for more than a century. Philadelphia Gear: Local service. National support. Global expertise.
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United States Navy Fleet Support

Since the acquisition of General Electric’s marine gear product lines, Philadelphia gear has expanded its support to the US Navy almost two-fold. We’ve added to our current program of designing and manufacturing the main propulsion drives and reduction gears for the San Antonio Class (LPD-17) of ships with the manufacture and repair of main reduction gearbox assemblies for the following ships:


  • USS Arleigh Burke (DDG 51)
  • USS America (LHA 6 and 7)
  • USS Freedom (LCS 1)
  • USS Whidbey Island (LSD 41)
  • USS Oliver Hazard Perry (FFG-7)
  • USS Nimitz (CVN 68)


In addition to main reduction gears (MRGs), Philadelphia Gear also designs and manufactures couplings that are used in the propulsion trains of the Virginia Class (SSN 774) and Seawolf Class (SSN 21) of fast attack submarines. In addition, our Synchrotorque® hyrdoviscous drive can be found throughout the U.S. Navy fleet employed as a wet brake and used for torque control and variable speed applications.


By providing a high caliber of quality and service, Philadelphia Gear has become the leading supplier of gearing and services to the Norfolk Naval Shipyard, Pearl Harbor Naval Shipyard and the U.S. Navy.

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USS Nimitz Class (CVN 68)

USS Arleigh Burke Class (DDG 51)

USS Whidbey Island Class (LSD 41)


With international offices in Asia, Europe, Latin America, and the Middle East, as well as U.S. regional facilities in the northeast, southeast, Midwest, gulf coast, and west coast, Philadelphia Gear is uniquely positioned to meet the high gearbox repair demands of national and global industrial operations. For more than a century, titans in the petrochemical, refining, pipeline, mining, power generation, water management, and marine industries all over the world have relied on Philadelphia Gear’s gearbox repair services to ensure their domestic and foreign brand power transmission equipment runs consistently at full capacity. Local service, national support, and global expertise, Philadelphia Gear is the choice source for inspection and measurement, engineering evaluation, repairs, spin and load testing, uprating, reverse engineering, and more. Click here for the contact information of the Philadelphia Gear facility nearest you.

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Gearbox Repair and Overhaul | Full Disassembly & Cleaning | Inspection & Measurement | Engineering Evaluation & Recommendations | Upgrading & Modifications | Reverse Engineering

Performance, Spin, and Load Test | Reinstallation & Inspection | Repair of Philadelphia Gear & Subsidiary Gearboxes | Repair of Other Brand Name Gearboxes | RapidGear Emergency Repair Service

Industry Applications for Gearbox Repair | Gearbox Repair for the Pipeline Applications | Gearbox Repair for the Power Generation Industry | Gearbox Repair for Crude Oil Refining

U.S. Coast Guard Gearbox Repair | Gearbox Repair for the United States Navy

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