Subscribe to RSS
Bearings Units
Miniature Bearings
Standard Bearings
Overmolded Bearings
Custom Bearings
England Germany Russia India Turkey SouthAfrica UnitedStates Netherlands Philippines Belgium Australia Brazil Spain China Korean

NSK introduces spherical roller bearings especially for steel industry applications

NSK has developed spherical roller bearings especially for steel-industry applications. Made from extra tough, wear-resistant steel, they also feature highly efficient seals. Field experience shows that these bearings can significantly reduce downtime for continuous casting machines.

NSK steel industry bearings

The bearings used for guide rollers in continuous casting machines have limited service life due to their adverse operating conditions. Contamination from mill scale and water spray both have a negative impact on the components’ useful lives, as do very low speeds and high mechanical loads.

At one company in the steel industry, the bearings’ life expectancy was so low – just one to two months – that downtime was seriously impairing productivity. Part of the problem was that continuous casting machines have a complicated coolant and lubricant supply system which had to be reconnected every time the machinery was serviced. This was a lengthy process.

The plant managers contacted NSK’s industry experts, who visited the site to analyse the use of bearings as part of NSK’s Asset Improvement Programme (AIP). They found that the premature wear and tear was attributable to contamination and the fact that the existing cylindrical roller bearings were unable to compensate for the deflection of the guide rollers. NSK therefore suggested replacing the bearings with special sealed spherical roller bearings from the SWR series (Super Wear Resistant). The plant operator acted on NSK’s recommendation.

The material used to make the outer rings of these bearings was specially developed by NSK for applications of this kind – i.e. bearings subject to low speeds, high mechanical loads and a contaminated environment. Its resistance to wear is higher than that of conventional bearing steel by a factor of three. When it comes to protection from fatigue damage, it performs better by an impressive factor of five. The material also has five times more core toughness.

By using spherical roller bearings rather than cylindrical roller bearings, it is also possible to compensate for the misalignment caused by shaft deflection. In addition, the bearings are subject to more even loading. On top of all this, there is no need to connect the bearings to the central lubricant supply system because they are pre-lubricated and sealed for life. This makes replacing them quicker.

The change of bearings suggested by NSK led to a substantial improvement in bearing performance, extended the bearings’ average service lives to four months, and cut the cost of lubricant, spare parts and servicing. All in all, the operator now saves approximately #8364;14,850 a year by using SWR spherical roller bearings.


source: NSK Europe

0 commentsback to post

Add your comment



Other articlesgo to homepage

Roller bearings for the High Roller

Roller bearings for the High Roller(0)

The American Bridge Company has contracted SKF to supply technological solutions for the Las Vegas High Roller, soon to be the world’s tallest Ferris wheel. SKF is providing Caesars Entertainment Corporation’s 170-metre-tall Ferris wheel with two custom-designed spherical roller bearings along with related technologies. The two spherical roller bearings weigh approximately 8.8 tonnes each, with

Schaeffler replaces main Trunnion Bearings on BOS Plant Vessels at Tata Steel Port Talbot

Schaeffler replaces main Trunnion Bearings on BOS Plant Vessels at Tata Steel Port Talbot(0)

Schaeffler UK was part of the team that successfully completed the replacement of the main trunnion bearings on a BOS (Basic Oxygen Steelmaking) plant at Tata Steel Port Talbot. By replacing the drive-side trunnion bearings with split rolling bearings, Schaeffler also helped to save the customer five extra days of work. If solid rather than

SKF ProFlex automated lubrication system improves container crane efficiency

SKF ProFlex automated lubrication system improves container crane efficiency(0)

SKF has installed the SKF Proflex automated lubrication systems in the MSC Home Terminal cranes in Europe’s second largest port, Belgium’s Port of Antwerp, enabling the customer to reduce manual maintenance with about 1,900 hours annually. On average, the customer spent about 90 hours to perform lubrication routines manually and this is carried out when

SKF bearing cuts fuel cost for heavy trucks

SKF bearing cuts fuel cost for heavy trucks(0)

SKF launches the SKF Energy Efficient (E2) tapered roller bearing (TRB), especially designed for truck final drive applications that reduces friction, enables less fuel consumption and reduces emissions in heavy trucks. This product is part of SKF’s BeyondZero portfolio*. “All our product engineering efforts are focused towards having solutions that are energy efficient, long lasting

SKF introduces an online network developed to solve maintenance problems

SKF introduces an online network developed to solve maintenance problems(0)

SKF today launches the SKF Maintenance Network, a web site that enables maintenance professionals to connect with other maintenance experts globally and get their feedback on specific problems and find potential solutions. The SKF Maintenance Network is a unique, fun and rewarding way to solve problems. In today’s ever challenging business environment, increasing uptime in

read more

Contacts and information

Social networks

Most popular categories

Legal Notice

© 2012 BEARING NEWS All rights reserved.