CARBÂ® toroidal roller bearings â a revolutionary ... - Acorn Bearings

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Contents The SKF brand now stands for more than ever before, and means more to you as a valued customer. While SKF maintains its leadership as the hallmark of quality bearings throughout the world, new dimensions in technical advances, product support and services have evolved SKF into a truly solutions-oriented supplier, creating greater value for customers. These solutions encompass ways to bring greater productivity to customers, not only with breakthrough application-specific products, but also through leadingedge design simulation tools and consultancy services, plant asset efficiency maintenance programs, and the industry’s most advanced supply management techniques. The SKF brand still stands for the very best in rolling bearings, but it now stands for much more. SKF – The knowledge engineering company 1 Product information.................................................. 3 The winning combination............................................. 3 SKF toroidal roller bearings with revolutionary design characteristics.................................................. 4 SKF Explorer class bearings ....................................... 5 The range for all requirements .................................... 6 Availability.................................................................... 7 Bearing features and benefits ..................................... 7 The CARB toroidal roller bearing – the cornerstone of the new self-aligning system...... 8 Successful in service ................................................... 10 2 Recommendations....................................................12 Selection of bearing size ............................................ 12 Longer life or downsizing ............................................ 12 Design of bearing arrangements ............................... 14 Radial location ............................................................ 14 Axial location .............................................................. 16 Design of adjacent components ................................ 18 Sealing the bearing arrangement ................................ 20 Lubrication ................................................................... 22 Grease lubrication ...................................................... 22 Deviating conditions ................................................... 24 Oil lubrication .............................................................. 25 Mounting ...................................................................... 26 Mounting on cylindrical seatings................................. 26 Mounting on tapered seatings..................................... 27 Dismounting ................................................................. 34 Dismounting from a cylindrical seating ....................... 34 Dismounting from a tapered seating ........................... 35 SKF concept for cost saving ....................................... 36 3 Product data ..............................................................37 Bearing data – general ................................................ 37 Product tables .............................................................. 44 CARB toroidal roller bearings ..................................... 44 Sealed CARB toroidal roller bearings.......................... 56 CARB toroidal roller bearings on adapter sleeve ........ 58 CARB toroidal roller bearings on withdrawal sleeve ... 68 Other associated SKF products ................................. 78 SKF – The knowledge engineering company ............ 82 2
1 Product information 2 Recommendations 3 Product data The winning combination Page ............. 12 Page ............. 37 The winning combination 1 Self-alignment ... Self-aligning bearings are the hallmark of SKF – not surprising since SKF was founded in 1907, based on the invention of the self-aligning ball bearing by Sven Wingquist. But the development did not stop there, other SKF inventions followed: the spherical roller bearing in 1919 and the spherical roller thrust bearing in 1939. Self-alignment is called for • when misalignment exists as a result of manufacturing or mounting errors • when shaft deflections occur under load and these have to be compensated for in the bearing arrangement without negative effects on performance or any reduction in bearing service life. ... and axial displacement ... SKF was also heavily involved in the development of bearings having rings that can be axially displaced with respect to each other. In 1908, for example, the cylindrical roller bearing in its modern version was largely developed by Dr.-Ing. Josef Kirner of the Norma Compagnie in Stuttgart-Bad Cannstatt, which became a subsidiary of AB SKF. Cylindrical roller bearings are applied when • heavy radial loads and relatively high speeds prevail and • thermal changes in shaft length must be accommodated in the bearing with as little friction as possible – provided, of course, that there is no significant misalignment. ... combined for success Previously, it was always necessary to compromise. Because misalignment or shaft bending makes the use of selfaligning bearings essential – and, depending on load and speed, the choice lay between self-aligning ball bearings and spherical roller bearings. However, in contrast to cylindrical roller bearings, those bearings cannot accommodate important axial displacements within the bearing. Therefore, it was necessary for one of the bearings to move axially on its seating in the housing. Such movement is always accompanied by considerable friction, which produces internal axial forces in the bearing arrangement. The result is a shortened bearing service life and relatively high costs for maintenance and repairs. Today, this is a thing of the past. Because Magnus Kellström, a product designer at SKF, had a brilliant idea; he invented the toroidal roller bearing. This bearing not only can compensate for misalignment without friction, but also for changes in shaft length within the bearing. Thus a completely new type of bearing for non-locating arrangements has become available to the engineering world. It is no longer necessary to compromise, and there are added benefits too – much longer service life for the complete bearing arrangement and minimized maintenance and repair costs. Self-alignment … … and axial displacement … … combined in a toroidal roller bearing 3
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Creating a new “cold remedy” In
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CARBÂ® toroidal roller bearings â a revolutionary ... - Acorn Bearings

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CARBÂ® toroidal roller bearings â a revolutionary ... - Acorn Bearings