Gearbox Repair Specialist
Sumitomo Gearbox Repair & Rebuild
Expert Sumitomo cycloidal and helical gear drive repair. IMR services all Sumitomo drive types — Cyclo, Paramax, and LSII — with full in-house capability.
The Sumitomo Specialist in the Midwest
Expert Sumitomo cycloidal and helical gear drive repair. IMR services all Sumitomo drive types — Cyclo, Paramax, and LSII — with full in-house capability.
Sumitomo drives are known for their compact design and high reduction ratios. The Cyclo drive's unique cycloidal mechanism requires specialized knowledge to rebuild correctly. IMR's experienced technicians have rebuilt hundreds of Sumitomo units across all product lines.
Sumitomo Units We Rebuild
We work on the full range of Sumitomo equipment — from legacy units to current production models.
Our Sumitomo Rebuild Process
Every Sumitomo 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
Sumitomo 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 Sumitomo equipment. In-house machining. 36-month warranty. One shop that does it all.
Get a Quote
Have a Sumitomo Unit That Needs Attention?
Send us the model number and a description of the failure. We'll confirm capability and turnaround — usually same day.