Online Rolling Bearing Friction Calculator Helps Make Power Transmission Systems More Energy Efficient

Precision bearing manufacturer Schaeffler (UK) Ltd has launched a new version of its rolling bearing calculation and simulation software, BEARINX®, which now includes new functionality for calculating friction.

Used early in the design process, BEARINX®-online Easy Friction helps users to identify and maximise the potential for energy efficiency savings within a machine or system. For example, after using the software, the user may decide to specify rolling bearings with reduced friction characteristics, or to downsize the bearings and/or other related system components.

Available online and free-of-charge to users and customers, the new BEARINX®-online Easy Friction software module enables users to calculate the energy efficiency of different rolling bearing designs in any application. Users can pre-register now at Users will then receive an email notification as soon as the software module becomes available. Users will be able to conduct online calculations as of mid-2011 after initial registration.

BEARINX®-online Easy Friction takes into account the internal load distribution of the bearing and contact pressures on the raceways and ribs, with the actual rolling element profiles. The new software module utilises a friction calculation theory based on physical algorithms confirmed by a series of comprehensive values from tests on rolling bearings. Bearing life is calculated according to ISO/TS 16281.

The software’s intuitive menu structure and navigational tools enable users to enter data quickly and easily for bearing modeling, bearing selection and operating conditions. The bearing design for an elastic shaft system, for example, can either be modeled with a locating/ non-locating bearing arrangement or as an adjusted bearing arrangement. The geometrical data of INA and FAG rolling bearings is uploaded automatically from an integral database. The user enters the operating data such as the loads on the shaft system, shaft speed, the internal clearance and axial preload of the rolling bearings. Lubrication and cleanliness details can also be specified.

In addition, users can exchange any saved files with Schaeffler’s ‘Engineering Service’ department in order to produce an optimum bearing design. Powerful servers at Schaeffler then perform the actual bearing calculations. The most important results are displayed in a results window, with the input data and calculation results documented in a PDF file.


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