Philadelphia Gear

Local Service. National Support.

Global Expertise.


The world is increasingly complex. The demands on the U.S. Navy and U.S. Coast Guard have never been more pressing. At Philadelphia Gear, now part of Timken Power Systems (TPS), our goal is to help you with that burden so you can stay focused on your core mission. Whether it’s the frontline defense of our country, contraband interdiction, search and rescue, or humanitarian relief, we want you to rely on our 125 years of experience to keep you operational. Our one-stop-shop solution is comprised of three major marine aftermarket offerings, which apply to all of TPS’s proprietary brands: Philadelphia Gear, Western Gear, WesTech Gear, DeLaval Steam Turbine, and certain intellectual property of GE Marine Gearing (excepting nuclear main reduction gears). It is also worth noting that Philadelphia Gear has the ability to meet all MIL-I-45208A and MIL-Q-9858A requirements.

Inspect, Repair and Upgrade Services

Quick turnaround times for the inspection and overhaul of mission critical gearboxes is at the heart of our value proposition. Each one of our service centers is equipped with the latest machinery to ensure we hold to our exact OEM specifications – designs that yielded decades of reliable service.

Staffed with engineers and shop personnel – experts thoroughly skilled in performing gearbox failure root cause analysis – we conduct a full series of disassembly, cleaning, inspection and measurement protocols, an engineering evaluation with recommendations, perform all necessary repairs and upgrades, and then full-speed spin test every unit. And all work done in our service and manufacturing centers is backed by a 3-year warranty.

OEM Renewal Parts and Custom Services

The world-class engineering team at Philadelphia Gear has centuries of expertise in power transmission equipment design and support. This diversified experience has been developed over decades of supplying a full range of product offerings from high-speed MRGs, to turning gears, to clutches to auxiliary lube oil pumps and more.

Experienced in virtually every type of power transmission application, our engineers understand the critical relationships between elements of a gear drive and the demands of specific marine applications. Additionally, each facility has immediate online access to over 4,000,000 technical documents, as well as 24/7 access to design engineering staff at the Corporate Engineering and Technical Center in King of Prussia, Pennsylvania.

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Onsite Technical ServicesSM (OTS)

Because Philadelphia Gear understands marine gearbox applications better than anyone, we know it’s not always feasible to remove a gearbox and send it to one of our service centers. That’s why we invented OTS. Designed to help our marine customers resolve their gearbox related issues while the vessel remains in the water, OTS is capable of a wide array of on-site solutions, including: removing and reinstalling equipment, rebuilding units in-place, re-boring housings, machining thrust faces, honing gear teeth, etc.

The Navy and Coast Guard now have the option of cutting a single P.O. for us to accomplish an agreed upon scope of work on a fixed-price basis. Simply put, our mission is the same as yours –to extend the longevity and reliability of critical rotating equipment as quickly and cost effectively as possible.