Providing gearing solutions for more than a century. Philadelphia Gear: Local service. National support. Global expertise.
Company Overview Industries Served Regional Facilities Products & Services Parts Quote Manuals & Literature News & Events Careers background
Products & Services Products & Services Menu

Gearbox Repair for the United States Navy

Since the early twentieth century, Philadelphia Gear has been serving the U.S. Navy by providing ships with gears, sprockets and transmissions in WWI to gearing for Navy destroyers in WWII and now marine gear drives that power warships and work boats of today. The technology may have changed over time, but Philadelphia Gear’s commitment to quality and service, whether it’s drive design or gearbox repair, has stood the test of time.


Currently, Philadelphia gear is designing and manufacturing the main propulsion drives and reduction gears for the San Antonio Class (LPD-17) of ships. The U.S. Navy also looks to Philadelphia Gear for the manufacture and repair of main reduction gearbox assemblies for the following ships:


  • USS Arleigh Burke (DDG 51)
  • USS America (LHA 6)
  • USS Freedom (LCS 1)


In addition to main reduction gears (MRGs), Philadelphia Gear also designs and manufactures couplings that are used in propulsion trains of the Virginia Class (SSN774) of submarines, and the Synchrotorque® hyrdoviscous drive has been used for wet brakes, torque control devices, and variable speed drives.


By providing a high caliber of quality and service, it’s no wonder the U.S. Navy trusts Philadelphia Gear for their main reduction gearing needs.  When the Navy needs reliable, high performance products that can match the state-of-the-art defense capabilities of a new ship design, they rely on Philadelphia Gear’s 118 years of manufacturing experience and ever evolving machinery upgrades.  That’s why Philadelphia Gear is the leading supplier of gearing and services to the Norfolk Naval Shipyard, Pearl Harbor Naval Shipyard and the U.S. Navy.

home . contact us . site map . emergency service

arrowPGC Terms and Conditions (Rev.9) 7.11.11.pdf



If the Navy puts their confidence in Philadelphia Gear, so should you. If you’re ever in need of an emergency repair service, Philadelphia Gear can help with 24/7/365 emergency on-site gearbox repair services nationwide. Whether you’re on an offshore oil platform or in a city power plant, Philadelphia Gear’s regional service facilities in North America and abroad can work on location or take it off-site and make it right. Find out how Philadelphia Gear can be of service to you by contacting us at 1-800-766-5120.


Website Design by Dynamic Digital Advertising

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


English Spanish Chinese Arabic