momac Getriebe

Industrial Gearbox Overhaul

Ensure maximum efficiency and longevity for your industrial gearboxes through our specialized overhaul services. We provide meticulous inspection, precise repairs, and thorough testing tailored specifically to your gearbox needs.

Thorough Damage Assessment

Every gearbox undergoes detailed visual and technical assessments, documenting wear, defects, and damages precisely. This initial step is essential for determining the most effective and economically viable repair strategy.

Professional Gearbox Disassembly

In our dedicated overhaul facility, each gearbox is carefully dismantled. All components are systematically examined, cleaned, and measured according to established quality standards.

Precision Repair and Restoration

Damaged parts are expertly restored or replaced with high-quality alternatives. Our independence from gearbox manufacturers allows us to select the most suitable components, balancing cost efficiency and reliability.

Expert Reassembly and Quality Testing

Each gearbox is meticulously reassembled in compliance with technical specifications. To ensure operational excellence, we perform rigorous idle or partial-load testing, validating the reliability and readiness for reinstallation.

Detailed Reporting

Comprehensive documentation detailing each repair step, including measurements, replaced parts, and test results, guarantees complete transparency and facilitates future maintenance.

Your Benefits

  • Customized Solutions: Repairs specifically tailored to your gearbox.
  • Professional Excellence: Skilled technicians ensure superior repair quality.
  • Rigorous Testing: Comprehensive testing confirms operational reliability.
  • Transparent Documentation: Detailed repair records for complete traceability.

Trust our expertise for dependable gearbox overhaul services. Contact us today for personalized solutions.

Manufacturer-independent gearbox overhaul

Flyer momac Gearbox Services / Gearbox Overhaul

For more information about our gearbox services and overhaul capabilities, please download our PDF flyer.

Industries We Serve with Gearbox Overhaul

Railway, Mining, Chemical Industry, Energy Sector, Potash and Salt, Crane and Conveyor Technology, Plastics Industry, Food Industry, Marine / Ship Technology, Mechanical Engineering, Food Production, Paper and Pulp Industry, Steel Industry, Stone / Earth, Open-Pit Mining, Environmental and Wastewater Technology, Water Treatment, Water Management, Wind Power Technology, Cement Industry, Sugar Industry

Your Direct Contact for Gearbox Overhaul

Dirk Venhorst
Vertrieb

Telefon+492841-1802.87
Telefax+492841-1802.50
Mobil+49172-2004081
E-Mailgetriebe@momac.de
Anfrage senden

Benjamin Pieper
Vertrieb

Telefon+49 (0)2841-1802.80
Telefax+49 (0)2841-1802.50
Mobil+49 (0)177-8180232
E-Mailvertrieb.getriebe@momac.de
Anfrage senden
Learn more about our gearbox services and repair expertise

>> Learn more about our gearbox services and repair expertise

Learn more about our gearbox services and repair expertise

Overhaul of
Flender gearboxes

Overhaul of
extruder gearboxes

Overhaul of
crane gearboxes

Endoscopic inspection
of gearboxes

Our Gearbox Overhaul Services from A to Z

  • Alignment and reconditioning of shafts
  • Bearing replacement and fit adjustment
  • Cast housing repair
  • Cleaning and degreasing of gearbox housings
  • Commissioning of gearboxes
  • Condition monitoring systems for gearboxes (CMS)
  • Damage prevention in gearboxes
  • Diagnosis of gearbox failures
  • Disassembly and expert assessment
  • Endoscopic gearbox inspections
  • Failure analysis and damage documentation
  • Filter optimization
  • Gear grinding and tooth flank optimization
  • Gear replacement
  • Gearbox alignment
  • Gearbox check-up
  • Gearbox endoscopy
  • Gearbox inspection
  • Gearbox installation
  • Gearbox maintenance
  • Gearbox modifications
  • Gearbox optimization and modifications
  • Gearbox overhaul
  • Gearbox reconditioning
  • Gearbox removal
  • Gearbox repair
  • Gearbox repairs / gearbox overhauls
  • Gearbox replication
  • Gearbox sealing
  • Gearbox selection support
  • Gearbox service
  • Gearbox verification
  • Heat treatment of newly manufactured components
  • Inspection of extruder and crane gearboxes
  • Journal repair and shaft rework
  • Leak testing and sealing optimization
  • Lifespan extension of gearboxes
  • Lubrication improvement
  • Manufacturing gearboxes based on samples
  • Measurement protocols and technical reports
  • MetalSCAN 3000 online gearbox monitoring (CMS)
  • Mounting of gearboxes
  • New gear manufacturing and component replacement
  • Oil analysis for gearboxes
  • Oil sampling from gearboxes
  • Oil system service and lubrication upgrades
  • On-site gearbox repairs
  • Painting and corrosion protection
  • Performance adjustment of gearboxes
  • Performance enhancement of gearboxes
  • Quality control and run-in testing
  • Re-engineering of gearboxes
  • Reassembly and final inspection
  • Reconstruction of gearboxes
  • Replacement of bearings in gearboxes
  • Replacement of gear components
  • Retrofits and upgrades upon request
  • Service documentation and archiving
  • Spare parts for gearboxes
  • Testing on idle or partial-load test benches
  • Tooth profile measurement
  • Transparent inspection and diagnostics
  • Troubleshooting and root cause analysis
  • Upgrade of lubrication systems
  • Visual inspection of gearboxes
  • Wear point elimination in gearboxes
  • Workshop and on-site emergency repairs
  • Worn gear teeth grinding
  • Workshop overhauls and gearbox revisions
  • Zonal inspection and reporting

What Is Included in a Professional Gearbox Repair?

In general, a gearbox overhaul includes the following steps:

On-site disassembly of the gearbox

The gearbox is removed from the machine or installation site. If desired, we can also carry out the disassembly at your plant and organize the transport to our gearbox overhaul facility in Moers.

Professional dismantling of the gearbox

At our specialized overhaul workshop, the gearbox is fully disassembled into individual components. Special attention is given to potential indicators of failure causes.

Gearbox cleaning

All parts are thoroughly cleaned to remove dirt and deposits. In addition to manual cleaning, dedicated washing systems for gearbox components are used.

Gearbox assessment

Each component is carefully inspected to detect wear or damage. Defective or worn parts are assessed to determine whether they require reworking or replacement.

Repair or replacement of gearbox components

Damaged or worn components are repaired or replaced. This typically includes seals, bearings, and gears.

Reassembly and function testing

Once all repairs are completed, the gearbox is reassembled. Functional integrity is verified on our test bench, where every overhauled gearbox undergoes a trial run under idle or partial load.

Please note: The exact steps involved in a gearbox overhaul can vary significantly depending on the gearbox type and model. The above outline provides a general overview of the standard procedures we apply.

Bearing damage is the most common cause of gearbox failure

During gearbox overhauls or reconditioning, all bearings are systematically replaced. The same applies to damaged gears, which are replaced with suitable, high-quality components.

If tooth flank irregularities indicate potential gear overload, we conduct a thorough review of the gear geometry and load design.

Our advanced technical infrastructure and reliable supplier network enable us to restore gearboxes weighing up to 30 tons to like-new condition—even beyond 30 tons in cases of partial disassembly and reassembly.

We exclusively use certified materials for gear components and bearings from renowned manufacturers. Where necessary, we incorporate original spare parts from the respective gearbox manufacturer to ensure optimal quality and compatibility.

Damage Patterns and Causes of Gearbox Failure

The reasons for gearbox failure can vary widely. In many cases, a major gearbox breakdown originates from seemingly minor damage.

If such “minor” damage goes undetected, it will sooner or later lead to an unexpected gearbox failure.

Unplanned downtime and the resulting production losses—especially when a suitable replacement gearbox is not immediately available—almost always exceed the cost of a professional gearbox overhaul.

Below, we have compiled a selection of common gearbox defects and their underlying causes. Many of these early-stage failures can be prevented through reliable gearbox monitoring, also known as condition monitoring. Please refer to the section on gearbox monitoring for more details.

  • Additive incompatibility or absence
  • Aging oil
  • Bearing damage
  • Broken gear teeth
  • Broken shaft
  • Cheap bearings
  • Chipped gear teeth
  • Component fatigue
  • Corrosion inside the gearbox
  • Cracked gear teeth
  • Damage due to overload
  • Debris inside the gearbox
  • Design miscalculation
  • Excessive backlash
  • Excessive oil temperature
  • Excessive stress
  • Fatigue failure
  • Faulty bearing seats
  • Faulty fits
  • Faulty gear design
  • Faulty lubrication system
  • Faulty material selection
  • Faulty oil viscosity
  • Faulty tooth flank pattern
  • Gear fracture
  • Gear pitting
  • Gear profile misalignment
  • Gear tooth breakout
  • Gear wear
  • Gearbox breakdown
  • Gearbox failure
  • Gearbox overload
  • Gearbox vibrations
  • Grey staining (micro-pitting)
  • High oil temperature
  • Impact load from plant crashes
  • Improper heat treatment
  • Incorrect oil
  • Incorrect oil temperature
  • Insufficient lubrication
  • Low oil level
  • Lubrication failure
  • Material defects
  • Material fatigue
  • Misalignment
  • Noise in gearbox
  • Old oil
  • Overheating
  • Particulate contamination
  • Pitting
  • Poor material quality
  • Rust in gearbox
  • Shaft rupture
  • Shavings in gearbox
  • Shock load
  • Strong vibration
  • Thermal overload
  • Tooth root fracture
  • Tooth surface damage
  • Tooth tip breakage
  • Tooth wear
  • Unsealed gearbox
  • Unsuitable oil additives
  • Unsuitable oil viscosity
  • Visual inspection indicators
  • Water ingress
  • Wear on bearings
  • Wear on seals
  • Wrong gearbox configuration
  • Wrong operating conditions
  • Vibration-induced fracture

Excerpt of major gearbox manufacturers whose gearboxes we service:

ASUG ®,Babbini ®, Battenfeld ®,Bauer ®, Benseler ®, Berstorff ®, BHS ®, Bockwoldt ®, Bonfigioli ®, Brook Hansen ®, Danieli ®,David Brown ®, DBT ®, Demag ®, Dempewolf ®, Desch ®, Dudweiler ®, Eickhoff ®, Eisenbeiss ®, Emil Kreiskott ®, Expert Globoid Getriebe ®, Flender ®, Getriebebau Nord ®, Hansen ®, Henschel®, Hellwig & Offermann ®, Hueber Baacke ®, Jake® (Jahnel-Kestermann ®), JSW – Japan Steel Works ®, Kachelmann ®, Keller ®, Kocks ®, Kumera ®, Koellmann ®, Krauss Maffei ®, Lohmann & Stolterfoht ®, Leistritz ®, Lufkin ®, MAAG ®, Moventas ® (Metso Drives ®/Valmet ®), NCG – Nanjing Gear Corp. ®, Noma®, Ostermann ®, Passavant ®, Pekrun ®, Pemat ®, PIV ®, PWH Weserhütte AG ®,  Renk®, Renold ®, Rexroth ®, Rossi ®, Santasalo ®, August Seegers ®, SAWA / Sauerwald ®, SEW Eurodrive ®, SIG ®, Thyssen Getriebewerke ®,  TGW Thyssen Getriebewerke ® , Thielenhaus ®, Voith ®, Walther Flender ®, Werner und Pfleiderer ®, Wülfel ®, WGW (Westdeutsche Getriebewerke) ®, Windhoff ®, Wolfgang Preinfalk  ®, ZAE ®, ZF ®, Zollern ® (Dorstener ®) u.a.

The names marked with ® are trademarks of their respective companies. momac does not own the ® brands listed above. We solely provide service for the gearboxes, perform repairs, and supply spare parts for these manufacturers’ gearboxes.

We also offer gearbox overhaul services for gearboxes from manufacturers not explicitly mentioned here.

Geprüfte Qualität

Wir sind zertifiziert nach DIN EN ISO 9001:2015 und OHSAS 18001:2007 sowie NLF/ISO OSH 2001