Gearbox Repair Specialist
Philadelphia Gear Repair & Rebuild
IMR rebuilds Philadelphia Gear industrial drives for power generation, oil & gas, and heavy processing. Large-capacity in-house machining and gear cutting for every Philadelphia Gear unit.
The Philadelphia Gear Specialist in the Midwest
IMR rebuilds Philadelphia Gear industrial drives for power generation, oil & gas, and heavy processing. Large-capacity in-house machining and gear cutting for every Philadelphia Gear unit.
Philadelphia Gear drives are engineered for high-horsepower, high-reliability applications in power generation and oil & gas. IMR's large-capacity machine shop — with turning capacity to 72" and gear cutting to 70" diameter — handles the large Philadelphia Gear units that most shops can't touch.
Philadelphia Gear Units We Rebuild
We work on the full range of Philadelphia Gear equipment — from legacy units to current production models.
Our Philadelphia Gear Rebuild Process
Every Philadelphia Gear rebuild follows a documented process — from teardown through load test. No shortcuts, no guesswork.
Teardown & Inspection
Complete disassembly with photographic documentation. Every gear, bearing, shaft, seal, and housing is inspected and measured against OEM specifications.
Failure Analysis
We identify the root cause — not just the symptom. Overloading, misalignment, lubrication failure, contamination, and fatigue are all documented before rebuild begins.
Precision Machining
Worn bores are re-machined to OEM tolerances. Shafts are repaired or replaced. Housings are cleaned, inspected for cracks, and restored to spec.
Component Replacement
Worn or damaged components are replaced — gears cut in-house to AGMA standards, bearings and seals replaced with OEM-equivalent or upgraded parts.
Assembly
Rebuilt units are assembled to OEM torque specs with fresh lubricant and new seals throughout.
Load Testing
Every major rebuild is load-tested on our 500 HP test stand. Vibration, temperature, and flow are verified before shipment.
Industries We Serve
Philadelphia Gear equipment is found in the most demanding industrial environments. We've rebuilt units for operations across every major heavy industry — often under emergency turnaround conditions.
View All IndustriesWhy Industrial Machine Rebuilders
50 years rebuilding Philadelphia Gear equipment. In-house machining. 36-month warranty. One shop that does it all.
Get a Quote
Have a Philadelphia Gear Unit That Needs Attention?
Send us the model number and a description of the failure. We'll confirm capability and turnaround — usually same day.