Gearbox Repair Specialist

Flender Gearbox Repair & Rebuild

IMR rebuilds Flender industrial gear drives for cement, mining, and heavy processing applications. All Flender drive types serviced — in-house, with full documentation.

The Flender Specialist in the Midwest

IMR rebuilds Flender industrial gear drives for cement, mining, and heavy processing applications. All Flender drive types serviced — in-house, with full documentation.

Flender gear drives are precision-engineered units built for the most demanding industrial environments. Our shop has the CNC machining, gear cutting, and load-testing capability to rebuild Flender units to OEM tolerances — including large mill drives and planetary reducers.

In-house gear cutting to 70" diameter
CNC machining to ±0.0001" tolerance
Dynamic balancing to ISO G1.0
Load testing to 500 HP
40,000 sq ft fully equipped shop
50-ton overhead crane capacity
36-month warranty on all rebuilds
24/7 emergency service available

Flender Units We Rebuild

We work on the full range of Flender equipment — from legacy units to current production models.

▸Flender inline helical gear drives
▸Flender bevel-helical reducers
▸Flender shaft-mounted reducers
▸Flender planetary gear drives
▸Flender mill drives
▸Flender ZAPEX couplings
▸Flender ARPEX couplings
▸Flender custom industrial drives

Our Flender Rebuild Process

Every Flender rebuild follows a documented process — from teardown through load test. No shortcuts, no guesswork.

01

Teardown & Inspection

Complete disassembly with photographic documentation. Every gear, bearing, shaft, seal, and housing is inspected and measured against OEM specifications.

02

Failure Analysis

We identify the root cause — not just the symptom. Overloading, misalignment, lubrication failure, contamination, and fatigue are all documented before rebuild begins.

03

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.

04

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.

05

Assembly

Rebuilt units are assembled to OEM torque specs with fresh lubricant and new seals throughout.

06

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

Flender 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 Industries
Cement & aggregate processing
Steel mills & metal processing
Mining & quarrying
Paper & pulp mills
Power generation
Chemical & petrochemical
Food & beverage processing
Water & wastewater treatment

Why Industrial Machine Rebuilders

50 years rebuilding Flender equipment. In-house machining. 36-month warranty. One shop that does it all.

Get a Quote

Have a Flender Unit That Needs Attention?

Send us the model number and a description of the failure. We'll confirm capability and turnaround — usually same day.