Gearbox Repair Specialist

Hansen Gearbox Repair & Rebuild

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

The Hansen Specialist in the Midwest

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

Hansen gear drives are precision-built units used in cement mills, conveyors, and heavy industrial machinery. IMR has the machining and gear cutting capability to rebuild Hansen units to OEM tolerances, including large drives where replacement parts are no longer available from the manufacturer.

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

Hansen Units We Rebuild

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

▸Hansen inline helical reducers
▸Hansen bevel-helical gear drives
▸Hansen shaft-mounted reducers
▸Hansen planetary gear drives
▸Hansen mill drives
▸Hansen conveyor drives
▸Hansen custom industrial drives
▸Hansen legacy and obsolete units

Our Hansen Rebuild Process

Every Hansen 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

Hansen 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 Hansen equipment. In-house machining. 36-month warranty. One shop that does it all.

Get a Quote

Have a Hansen Unit That Needs Attention?

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