MVS 130D/240D - 4 Pages

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MVS 130D/240D

Catalog excerpts

Noise, vibration and axial clearance tester MVS 130D, MVS 240D General description Measurement of vibration is of great importance when aiming for a high quality bearing production. Some types of vibration are related to diminished bearing life, or can be a source of customer dissatisfaction. Vibrations in bearings are caused by time varying forces in bearing. The contact forces move around the bearing, giving rise to perfect bearing vibrations in the outer ring. Geometric imperfections which can arise in raceways are: • • • • • • Waviness Local defects Dirt particles Roughness Form errors Cage problems SKF noise and vibration equipment serves to quantify and trace the reasons for vibrations. The MVS equipment is designed for measuring axial clearance in spherical rollers and self-aligning ball bearings. Bearings with a cylindrical bore and a tapered bore can be measured.

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An electronically-controlled motor drives the spindle, on which the bearing is placed on a mandrel, one for each bearing bore diameter. The advantage of the frequency-controlled motor is that acceleration and retardation can be regulated in order to prevent the bearing from skidding and either becoming damaged itself or damaging the mandrel. The pickups and clearance sensors are mounted on the spindle housing. The spindle and the loading device are mounted on a base plate which, in turn, is mounted on vibration dampers in order to eliminate vibrations from the surroundings. The loading...

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Functional principle During measurement, the inner ring of the bearing is rotated on a highquality spindle. An axial load is applied to the outer ring. The axial load is changed during measurement from one side to the other. On a two-row bearing, this means that first one side and then the other will be loaded, with the radial vibrations being measured by two pickups, one for each side. During measurement, connection is made to the pickup which is placed over the loaded side. The vibration signal is analysed in the CMME 7000 electronics. Clearance is measured by means of two displacement...

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Lubrication systems These competence areas include bearings and units, seals, lubrication systems, mechatronics, and a wide range of services, from 3-D computer modelling to cloud-based condition monitoring and asset management services. SKF’s global footprint provides SKF customers with uniform quality standards and worldwide product availability. Our local presence provides direct access to the experience, knowledge and ingenuity of SKF people. SKF BeyondZero is more than our climate strategy for a sustainable environment: it is our mantra; a way of thinking, innovating and acting. For...

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