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RKB ROVSX for Vibrating Machinery

RKB ROVSX for Vibrating Machinery
15Pages

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RKB spherical roller bearings: new ROVSX class for vibrating machinery

RKB ROVSX spherical roller bearings: endowed with RKB’s latest technology RKB ROVS design To produce the new ROVSX design, RKB utilizes all the latest technologies available: • advanced calculation and simulation tools for continuous improvement of inner design and geometry • special bearing steel for premium reliability • bainite treatment for tougher resistance in harsh conditions • higher precision of inner geometry and better topography parameters by means of the latest generation CNC super-finishing grinders RKB ROVSX new design

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One inner ring with retaining flanges, one outer ring and a twopiece machined brass cage guided on the outer ring RKB ROVSX spherical roller bearings: design

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RKB ROVSX spherical roller bearings: main features available Rings thickness (mm) Geometry Heat treatments Inner ring Series 17 > 17 Straight Tapered 1:12 ISO 223 Other* HB1 S1 HB1+S1 Steel SAE 52100 X X X X X X X X SAE A485.RAV X X X X X X X X X X X X X X X X The RKB ROVSX spherical roller bearings are produced with two different types of steel based on the heat treatments required and the thickness of the rings (for further information refer to the related educational videos “RKB special bearing steel for premium reliability”). * Only special projects (RKB can produce other ISO series...

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RKB ROVSX spherical roller bearings: applications In many mechanical applications (e.g. vibrating screens, vibrating hammers etc.) the bearing is subjected to high speeds, high vibrations and heavy loads. Due to the high rotational accelerations, the centrifugal force represents the main load. When all these factors act together, the lubrication of the bearing is very difficult. In these severe conditions, RKB recommends using its spherical roller bearings ROVSX design. Heavy loads High speeds High vibrations RKB ROVSX design

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RKB ROVSX spherical roller bearings: applications The RKB ROVSX spherical roller bearings are frequently used in the vibrating screens. The vibrations are produced by the shaft due to the eccentricity between the axis of revolution and the center of mass. The vibrations are transmitted from the shaft to the machine through the bearings (a system of springs separates the machine from the ground). The RKB ROVSX spherical roller bearings perfectly fit also vibrating hammer applications. The power is generated by two different sources and transmitted to all the shafts by couples of gears. The...

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Higher precision than standard class RKB ROVSX spherical roller bearings: main features Improved cage design RKB bainite treatment (available also with S1 stabilization treatment)

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RKB ROVSX design main features: improved cage design The cage is separated into two different pieces to allow possible sliding movements (due to revolving shaft deflections). The machined brass cage, guided on outer ring, is thicker than the standard design to increase stiffness and resistance. RKB ROVSX cage design The cage is designed open-end to improve the lubrication of the rolling elements. Furthermore the brass enhances the damping of the vibrations.

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RKB ROVSX design main features: higher precision than standard class The RKB ROVSX spherical roller bearings are designed with tighter dimensional tolerances than standard class. These tolerances are used for some of the dimensions that directly influence the radial internal clearance of the bearing: • d, bore diameter • D, outer diameter • B, bearing width The reduction of the tolerances leads to a better control of the radial internal clearance of the bearing. In addition this type of bearing is produced with a special radial internal clearance, with a restricted range, generally C4R...

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RKB ROVSX design main features: bainite treatment Aichelin furnaces for bainite treatment in RKB T3 Plant • higher impact resistance • higher wear resistance • higher fatigue resistance For further information refer to the related educational video “RKB special heat treatments for heavy duty applications” In order to improve bearing life in harsh working conditions, RKB typically applies the bainite treatment to its ROVSX spherical roller bearings. This ensures better impact, wear and fatigue resistance.

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RKB ROVSX spherical roller bearings: example of Technical Fiche

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RKB ROVSX spherical roller bearings: comparison table Spherical roller bearings for vibrating applications Main manufacturers Suffix RKB ROVS/ROVSX SKF VA405/VA406 Schaeffler Group (FAG) T41A/F80 NSK VS SNR/NTN EF800 Every care has been taken to ensure the accuracy of the information in the present document, but no liability can be accepted for any errors or omissions contained herein. Because of continuous redesign and technological progress, this document cannot be considered exhaustive in terms of product range and executions. RKB Bearing Industries reserves the right of any amendment...

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Conclusions • HIGHER PRECISION THAN STANDARD CLASS • HIGHER IMPACT, WEAR AND FATIGUE RESISTANCE • BETTER BEHAVIOR IN CRITICAL APPLICATIONS RKB ROVSX SPHERICAL ROLLER BEARINGS ENSURE: HIGHER RELIABILITY AND PERFORMANCE APPLICATIONS: • VIBRATING SCREENS • CRUSHING AND CONSTRUCTION EQUIPMENT • VIBRATING HAMMERS

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RKB ROVSX for Vibrating Machinery 15Pages

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RKB ROVSX for Vibrating Machinery
15Pages