Tool case solution for fretting corrosion protection

The SKF anti-fretting paste LGAF 3E is a well-proven mounting paste that helps to reduce fretting corrosion in metal to metal contact areas that are subject to vibrations or small relative movements.
The new 35 gram tube is designed to be readily available in every tool case for mounting bearings or protecting other metal to metal contact areas from fretting corrosion. Since only little amounts are needed for effective protection, the 35 gram tube is sufficient for many installations. More than 25 installations of 23120 CC/W33 can be performed with a single tube.

LGAF 3E 35 grams tube box

• Effective protections against fretting corrosion
• Small pack size for tool cases
• High economics in application
• Recommended for all bearing installations
• Usable for many other applications

Typical applications

• Bearing mounting

The most common usage of LGAF 3E is for mounting bearings. Applying the anti-fretting paste in the loose fit between the bearing and the housing (or shaft) significantly reduces fretting corrosion and helps to increase the service life of the bearing, shaft and housing. LGAF 3E reduces fretting corrosion in the loose fit of bearings.
Less corrosion makes bearing dismounting easier. Reducing corrosion repair work helps to maintain a good bearing fit.

• Heater maintenance

The contact area between the TIH heater core and the yokes needs regular maintenance to ensure long term performance. Cleaning the contact area and applying LGAF 3E help to
reduce corrosion of the contact surface in between core and yoke,
reduce noise of the heater in operation and
maintain high heater performance over time.

• VIBRACON re-installation

SKF VIBRACON chocks are delivered with protective layer of LGAF 3E and are ready for use. After equipment re-installations where the spherical surfaces were separated and cleaned, a thin layer of LGAF 3E needs to be applied to prevent fretting corrosion and keep the chock in a good condition.

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SKF delivers its largest sealed spherical roller bearing

SKF’s Gothenburg factory has produced the company’s largest sealed spherical roller bearing (SRB) to date. The ‘241/900’ SRB is 50 per cent larger and three times heavier than the previous largest SKF sealed SRB.

Gothenburg, Sweden, 4 October 2017: Destined for a Polysius Polycom 8 roller press at a large copper mine in Peru, the three-tonne 241/900 sealed SRB is dimensionally equivalent to a standard SKF non-sealed version, with inner diameter (bore) of 900mm, outer diameter of 1,420mm and width of 515mm. The seal itself consists of a rubber over-moulded steel plate with the same profile and offering the same characteristics as those currently used with existing SKF sealed SRBs.

The customer’s sealed SRB will be fitted to a horizontal shaft and will operate in extremely dusty conditions, with very fine stone dust from both the desert location itself and the grinding processes posing a major contamination risk. The roller press is a highly loaded application (C/P of 2-3) subject to frequent shock loading; the predominantly radial loads, when coupled with the high level of contamination at the site, poses a significant risk of early bearing failure. SKF’s custom made seal aims to at least double the bearing service life by reducing the risk of contamination in this application significantly.

The actual performance of the seal for this size of SRB remains to be verified in service by the customer, but the same seal design used in smaller SRB sizes has achieved a service life of at least double that of an open, non-sealed bearing. Even longer service lives of around three to five times that of a non-sealed bearing can be achieved with SKF’s ‘Three-Barrier’ bearing protection solution, which comprises premium SKF sealed SRBs housed within sealed housings containing a barrier grease.

This record-breaking sealed SRB was designed and manufactured within a tight, six-month schedule by a team led by Daniel Ortega – Project Manager, Business Development.

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SKF inaugurates large-size bearing test centre

SKF has inaugurated its newly-built Sven Wingquist Test Center in Schweinfurt, Germany, an investment totalling EUR 40 million. The center is the first in the world that is able to test large-size bearings under actual operating conditions. This allows for a more efficient development process for customers, as well as improved bearing performance and increased service life.

The Sven Wingquist Test Center has two testing rigs. One rig is designed for the testing of wind turbine main shaft arrangements. The second rig will be used for testing bearings used in other industrial sectors, including mining, construction, steel manufacturing and marine transport.
Combined with SKF’s continued development of diagnostics, condition monitoring and simulation methods, these rigs will contribute to reduced testing and product development lead-times and provide deeper insights into bearing performance.

Victoria Van Camp, CTO and President, Innovation and Business Development, says: “No other test center is capable of testing large-size bearings this accurately, under actual operating conditions, giving us and our customers a significant strategic advantage. The technologies being used here in the Sven Wingquist Test Center will help save our customers time and resources, whilst supporting their ambitions of increased reliability and service life.”

The test centre has received funding from the Bavarian Ministry of Economic Affairs, Media, Energy and Technology and the German Federal Ministry for the Environment, Nature Conservation, Construction and Reactor Safety.

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SKF delivers higher-performance across its INSOCOAT bearings range

With it’s latest generation of electrically insulated bearings, SKF has raised the performance standard to provide constant electrical performance, even in high humidity.

SKF’s INSOCOAT bearings range – comprises bearings with an electrically insulating coating on the external surfaces of its inner or outer ring, plasma-sprayed with an aluminium oxide coating. The coating, which is naturally hygroscopic, is sealed with a resin to protect against the conductive effects of high humidity and moisture ingress.

These bearings are specially designed and manufactured for use in rotating electrical machines, such as industrial electric motors, traction motors and generators. They prevent the passage of harmful electrical currents from the rotor to the machine frame via the bearings, which causes progressive electrical erosion of the bearings’ rolling contact surfaces and ultimately premature failure.

Following the introduction of an improved plasma spray coating process and optimised ceramic layer, SKF can provide this superior insulating coating as standard and off-the-shelf across its entire INSOCOAT range.

INSOCOAT bearings are now able to withstand voltages of 3000V DC sufficient to cope with the vast majority of stray bearing current problems in electrical machines.

In addition, the upgraded moisture-resistant coating provides greater protection against humidity storage environments which can compromise a bearing’s insulating properties before it is even placed in service, making INSOCOAT bearings highly robust during transport and handling.

Combining both bearing and insulation in a single solution, INSOCOAT protects against electrical erosion at significantly lower total cost of ownership compared with other techniques such as shaft or housing insulation.

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SKF bearings put Scuderia Ferrari in the driving seat

The 2017 Formula 1 season just started, and SKF is right at the heart of it again, extending its long association with Scuderia Ferrari. SKF will supply a range of specialist products as well as its design and validation expertise to the Italian motor racing giant.

“We have had close and lasting technical cooperation with Scuderia Ferrari for 70 years,” says Jean-Sylvain Migliore, SKF Racing Unit Manager. “Our parts offer real technical advantages – ranging from low friction and compactness to higher toughness and extended life.”

Under the agreement, SKF will supply all customised products that fit into the chassis, such as wheel bearings and plain bearings. At the same time, it will supply a broad range of products for the engine and gearbox – including cylindrical and needle roller bearings, deep groove and angular contact ball bearings and hybrid products.

The SKF bearings provide top end performance: special materials – such as high speed and high temperature steel – as well as special coatings and other complex features all contribute towards meet the exacting standards of Formula 1 components.

Some of the materials, including ceramics, special steels, lubricants and coatings, are still under development in SKF’s R&D centre. In addition, SKF will supply Scuderia Ferrari with testing facilities in order to improve factors such as condition monitoring.

“SKF has been associated with Ferrari since the foundation of the Maranello factory. Over the years, Ferrari has enjoyed the fruits of this co-operation and looks forward to a bright future together” says Maurizio Arrivabene, Scuderia Ferrari’s Team Principal at Scuderia Ferrari.”

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SKF helps the Ducati Team gear up for MotoGP 2017

SKF’s high performance parts and specialist technical knowledge are once again helping the Ducati Team prepare for success in this year’s MotoGP World Championship. The season started on March 23 with the Grand Prix of Qatar on a track that last year saw the Italian motorcycle manufacturer not only place second thanks to Andrea Dovizioso but also claim the circuit’s top speed record with Andrea Iannone’s 351.2km/h. The 2017 Ducati Team line-up will see five-time world champion Jorge Lorenzo from Spain join Italian Andrea Dovizioso for the 18-round season.

“Building on a more than 18-year strong strategic partnership with Ducati Corse, our advanced engineering solutions and bearings expertise have long helped Ducati achieve racing excellence including last year’s amazing results,” Alberto Guerrini, who is responsible for the Ducati account at SKF, said. “With the technical advantages of our solutions, such as low friction, long service lives and robustness, we are confident Ducati will enjoy another fantastic season.”

SKF is supporting Ducati with the design and validation of a broad range of specialist components that boost the performance of its purpose built racing machines. The custom engineered parts include deep groove and angular contact ball bearings, cylindrical, spherical and needle roller bearings, hub bearing units and inner rings.

The bespoke parts are developed to withstand the tough demands of the motorsport sector and feature special materials, such as viton, and heat treatments for consistently reliable, high precision operation. SKF also analyses the parts returned from races and track tests in dedicated laboratories to ensure every component is continually being improved further and optimised.

Mauro Grassilli, Marketing and Sponsorship Manager of Ducati Corse, said: “With SKF’s commitment to the constant development of innovative customised solutions and the flexibility of its factories and supply chain for urgent deliveries, the partnership we have with them is a vital element of our success on the track. Thanks to its continued technical support and dedication we have no doubt that this season will be better than ever.”

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SKF builds to last: 3 000 tonnes of concrete anchor large size bearing test centre in Germany

SKF is currently building the world’s most powerful large size bearing test centre on its Schweinfurt ‘Werk 3’ site. This pioneering project is now one major step nearer completion – weighing in at around 3 000 tonnes, it took just two days to cast the foundations for the larger of the two new test rigs.

Around nine metres wide, six metres deep and 22 metres long, the pit that had to be filled for the base of the future SKF test rig was the size of two detached houses. It had to be filled quickly to ensure the concrete could set correctly.

Over the course of 19 hours, 150 mixer trucks brought in their load and discharged it in the pit, practically one vehicle every six minutes; so almost as if on a conveyor belt. “Obviously this was a logistical challenge,” says Armin Schaab of SKF’s Construction and Factory Planning team, “but quite clearly our detailed advance planning paid dividends. In addition, the entire team put in a magnificent effort on site, with everything running like clockwork and no incidents of note. This meant we were able to cast the 1 200 cubic metres as planned.”

The base is such a huge block because of the enormous forces likely to be unleashed by the test rig that will be anchored to it. The colossus among test rigs is intended in particular for the testing of gigantic rolling bearings for wind power. “It will be the first test rig in the world capable of testing not just a single main bearing but a complete bearing unit all at once,” says SKF’s Senior Vice President, Technology Development Bernd Stephan, hinting at the dimensions of this unique installation. “The bearings themselves can have an external diameter of anything up to six metres, being intended for turbines in the 10 megawatt class. The test rig can subject structures of that kind to dynamic forces in all directions that, when combined, are many times greater than on the strongest test installation currently available.”

Quite apart from that, the future test rig will also allow rotational speeds on testing that will be considerably higher than currently available. Using these exceptional capabilities, SKF wants to simulate extreme dynamic loads of the order of several meganewtons or meganewton metres in as realistic a manner as possible. In view of power capacity of this order, the engineers from RENK Test System GmbH, the firm entrusted with the development, even had to come up with a special fixing method that would direct the forces exerted on the station in a controlled manner along the correct paths.

“We are making these efforts because the existing computational simulation models simply aren’t capable of making truly realistic prognoses,” says Dr Martin Göbel, Manager of the test centre project at SKF in Schweinfurt. “Our two new test rigs will provide a remedy in this respect and give us insights into processes that were previously inaccessible. The relevant findings will make the new test centre a pioneering instrument in helping many customers from a wide variety of industries gain access to an energy-efficient future in a way that is tailored to the application in question.”

“In the final analysis, the 360 MSEK investment in the new test centre will help us customise large size bearings to their subsequent uses much more precisely and efficiently than has previously been possible,” says Manfred E. Neubert, President of SKF GmbH. “This means that our customers benefit from significantly higher levels of robustness and reliability in the new generation of large size bearings.” For SKF itself, the new test centre is like one of those final pieces in a puzzle soon to be completed, adding to the expertise in large size bearings already available on the Schweinfurt site.

Follow the construction of the world’s most powerful large size bearing test centre: http://skf-download.de/pruefzentrum/cam1en.php.

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