GBS Gearbox Services international brand of Schaaf- en Boorwerk Rotterdam B.V.
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GBS Gearbox Services international

International Renk gearbox repair

Renk Gearbox Repair

GBS Gearbox Services international is the fastest, full service, worldwide specialist in gearbox repair of Renk gearboxes. Taking the latest innovations of our gearbox service experts, our goal is to get, often mission critical, gearboxes back into production at the shortest timespan possible. We have a winning track record in Renk servicing! Having experience with a wide variaty of brands, we know the weakspots and strengths of any brand and can not only repair but often improve the reliability of any gearbox system.




Renk industrial gearbox services

RENK is international manufacturer of propulsion components and test systems. RENK has more than 135 years of experience and development work in propulsion technology and the combined capabilities of more than 1,800 employees worldwide.
RENK has four independent divisions: Vehicle Transmissions, Special Gear Units, Standard Gear Units and Slide Bearings.

Vehicle transmissions:
The Vehicle Transmissions division is a worldwide manufacturer of automatic transmissions for medium- and heavy-duty tracked vehicles. The division comprises the vehicle transmission sector at the Augsburg plant and the French subsidiary RENK France S.A.S. Also included in this division is RENK Test System GmbH that supplies testing systems for development, production and quality assurance in the automotive, rail vehicle, aviation and defense industries. Other products of the lineup are test rigs for wind energy plant drivelines.

Special Gear Units:
This division comprises the special gear manufacturing facility at Augsburg and the Swiss subsidiary RENK-MAAG. The product range covers gear units for fast ships and naval applications of up to 80 MW rating as well as stationary gear units for a variety of industrial applications as in the cement industry or power generation. RENK’s turbo gear units have capacities of up to 140 MW.

Standard Gear Units:
The Standard Gear Units division encompasses gear unit production at the Rheine location including marine gear units for merchant and supply vessels, for liquid gas tankers and ferries. Rheine also manufactures gear systems for turbine, pump and compressor applications. Also part of the Rheine lineup are gear units for the 5-MW offshore wind energy market and industrial couplings.


GBS Gearbox Services international is specialised in services the gearboxes in all these industries, as our specialty lies in gearbox services. Our highly experienced emergency support experts work to provide effective solutions that meet your demands, getting your production running!

4 different projects on Renk gearbox services

  • Type:
  • HSU-800D
  • text voor google
Scope of work:
GBS Gearbox Services International was approached by a client in the maritime market, their vessel, the Holland Klipper had some problems with their RENK gearbox and therefor couldn’t continue the journey to unload a large cargo of mackerel in Port Harcourt. Repair on this gearbox was required after finding considerable damage on the bearings in the gearbox. Due to the limited time given we had to do an temporary repair on the gearbox in order for it to deliver its cargo.

Due to a broken lubrication pipe, the bearings in the gearbox had run dry for almost 40 seconds. The bearing that had suffered the most was the input shaft bearing because that bearing runs at the highest rpm. Inspection revealed a lot of damage on the axial surface of the bearing. Hereby the white metal surface of the bearing had completely came off and the only contact was steel on steel. Our technician who has flown to Nigeria in order to make the vessel operational again had to remove both bearings on the input shaft. After removing the bearings, he found damage on the input shaft itself and had to make the surface of the shaft as smooth as possible with whetstone and sandpaper in order to make a clean fit for the spare bearing on the input shaft.

On the engine side bearing we found some radial damage due to little particles of white metal that had run through the oil system, here we also needed to remove the scratches by hand and make a smooth surface. The axial bearing-pads on the output shaft also had some damage by dirt in the oil system so they had to be dismounted and cleaned by hand.

Finally we lowered the cover of the gearbox and started mounting the coupling, put the pipes of the oil system back on and started with flushing of the oil system. We had to flush the system all night and cleaned the filters three times.

The next day we could start with testing the gearbox, we tested in 4 stages:
15 minutes with 0% load
30 minutes with 20% load
45 minutes with 40% load
60 minutes with 60% load

After every stage we opened the cover and checked the conditions of the gearbox. There were no deviations found. With this emergency repair the vessel was operational within 5 days, in our report we mentioned the fact that this is just a short-term solution and that we would have to do an complete overhaul of the Renk gearbox in order to prevent long-term problems.

Scope of work:
- Cleaning and replacing of bearings on generator side and input shaft
- Cleaning of the axial damage on the output shaft and bearing-pads
- Flushing the oil system and cleaning the filters
- Testing the gearbox at different load levels
- Making a report with recommendations
Location - date:
Nigeria - December 2012
Renk gearbox Renk gearbox repair Renk inspection
  • Type:
  • HSUSL 1020
  • text voor google
Scope of work:
Visual inspection on every bearing and gear with our endoscope and camera. We also inspected the oil and oil filters onsite. Our work was performed on gearbox Renk HSUSL 1020. Re
Location - date:
Singapore - September 2012
RENK getriebe RENK getriebe reparatur Renk instandsetzung
  • Type:
  • HSN 710
  • text voor google
Scope of work:
First we checked the alignment. We disassembled and cleaned gearbox Renk HSN 710. We inspected all the parts and reported our findings to our client. After inspection, we assembled the gearbox again.
Location - date:
Curacao - December 2011
RENK gearbox RENK gear service 变速器 检查 RENK
  • Type:
  • SWUF80N
    P= 1495kW
    375 rpm
  • text voor google
Scope of work:
Disassembly, repair, cleaning and inspection on gearbox Renk SWUF80N.

Our recommendations:
Due to the fact that the gearbox parts are all in good conditions, except the Ahead and possible the Astern friction and because the VULKAN coupling is twisted and cracked, we assume that there must be an outside coarse / incident / accident. It’s possible that those sudden forces came from the propellor. We recommend to further inspect the both frictions further after which we can make an full quotation.

After the inspection we preformed an overhaul of the gearbox.

The complete overhaul consists of:
- Repair of the forward friction.
- Repair of the reverse friction.
- Overhaul of both pumps; cooler tobe discussed later.
- End plate cover will be modified with blind plate.
- New elastic elements for the VULCAN EZ275.
- Repair WABCO valve.
Location - date:
Martinique - May-June 2011
RENK gearbox 变速器 检查 RENK RENK gear service
  • Vehicle transmissions
  • Standard Gears
  • Special Gears
For more than 20 years, GBS Gearbox Services has gained extensive knowledge of gear technology through new gearbox design and manufacture. Today, GBS is supplying service to Renk gearboxes in marine and industrial markets.
Using this experience, our Services division will provide the highest level of commitment to existing and new customers for products already operating in the field.

Ship owners and Industrial companies throughout the world value the reassurance of the superior support provided by the skilled and dedicated engineering and technical specialists that form the GBS Gearsbox Services team.

Field Service Engineers are on constant standby to visit any ship or plant throughout the world. With an unrivalled average 25 years industry and marine experience, they are all fully qualified and certified to work in all environments, both on and offshore. Their high level of technical experience enables most work to be carried out on-site, supported by an practical experienced team of world-leading design and research engineers in the Netherlands.

Our Services team is qualified to inspect, maintain and repair any make or type of industrial or marine gearbox. Many working examples exist of improvements we have made to non-Renk gearboxes, that have extended the life of the gearbox.

For Renk Gears we are working in the following markets

offshore wind energy market cement industry or power generation automotive, rail vehicle, aviation and defense industries industrial plants Marine
  • Power industry
    POWER:
    Total Power Station gearboxes
    Circulating Water Pump gearboxes
    Boiler Feed Pump gearboxes
    Coal Mill gearboxes
    Wind turbine gearboxes
    Hydro turbine gearboxes
    Gas turbine gearboxes
    Steam turbine gearboxes
  • OIL & GAS OFFSHORE
    OIL & GAS OFFSHORE - Oil rigs and FPSO’s
    Turbine generator gearboxes
    All Mechanical drive gearboxes
    Boiler feed pump gearboxes
    Sea water injection pumps gearboxes
    Compressor gearboxes
  • (Petro) Chemical Industry
    OIL & GAS ONSHORE / PETROCHEMICAL – Pumping and refineries
    Turbine generator gearboxes
    All Mechanical drive gearboxes
    Boiler feed pump gearboxes
    Pipeline pumping gearboxes
    Pipeline compressor gearboxes
  • Marine
    Marine
    Propulsion gearboxes
    Turbine generator gearboxes
  • Heavy Industry
    Heavy Industry
    Sugar
    Steel
    Mining
    Chemicals