MVH 90 200EL Vibration Tester

8/9/2019 MVH 90 200EL Vibration Tester

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The MVH 90 and MVH 200 devices are similar equipments, but withdifferent working ranges; please see the technical specifications onpage 7.

There are two versions of each type available:• MVH 90E/MVH 200E

These testers use the MEA 200 velocity-proportional pickup,which has an almost linear characteristic curve up to 10 000 Hzand receives the radial vibration of the bearing through its station-ary outer ring.The pickup tip touches the outer ring.Advantage: robust pickup, favourable price

• MVH 90EL/MVH 200ELIn this version the SKF Laser Vibrometer MSL-7000 picks-up thenoise signal of the bearing in a contactless manner. This is veryuseful if a special bearing with non-symmetrical bearing outerring with restricted sensor contact area should need to be tested.The SKF Laser Vibrometer combines a robust, integrated, single-box design with the clear advantages of non-contact, laser-basedvibration measurement.Advantage: contactless measurement, easy handling, and no wear

or damage by wrong sensor positioning.

The MVH equipment can be described as follows:• Has an extremely precise sliding-bearing spindle, which drives the

inner ring of the bearing under test.

• Incorporates a pneumatic axial loading unit with adjustable testload. A radial loading unit is optionally available.

• A two-hand operation starts the automatic test cycle: then axialloading unit applies an axial load to the outer ring and moves thebearing against the testing spindle, and the pickup is applied to thestationary bearing outer ring. The bearing noise is measured(using a freely programmable measuring time), analysed and thendisplayed. Once the testing is completed, the loading unit returnsto its initial position and the machine is ready for the next testcycle, etc.

• Resetting for another type of bearing can be done quickly and sim-ply. The arbor on the spindle and the loading tool of the axial load-ing unit need to be exchanged and the pickup is to be positionedagainst the new bearing. If using the MSL-7000, then only thehorizontal position and the focus must be adjusted.

• The pickups receive the radial vibration of the bearing through itsstationary outer ring.

• The vibration analysis is performed by the CMME 7000 measuringelectronics. Normally the three standard frequency bands areevaluated. Within these bands the tolerance limits are freely pro-

grammable and/or are available after selecting the appropriatebearing type. Evaluation criteria according to customer’s require-ments (i.e. specific spectrum masks) are possible. Frequency spec-trum and detailed analysis of the spectrum is also used to deter-mine the bearing vibration locations and their causes.

Machine description1 LCD monitor2 Keyboard with track ball (mouse)3 Loudspeaker4 Control panel5 Measuring mechanics6 CMME 7000 measuring electronics7 Electrical cabinet8 Drive motor9 Pneumatics

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MVH 90EL

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Functional principle• During measurement, the inner ring of the bearing is rotated at a

constant set speed.• An axial load is applied to the outer ring of the bearing by a spe-

cially designed tool.• The MEA 200 pickup (MVH 90E/200E) or the SKF Laser Vibrom-

eter MSL-7000 (MVH 90EL/200EL) converts the radial vibrationof the bearing into a velocity proportional electrical signal.

• The MEA 200 signal is amplified and digitalized using a high-reso-lution analogue-to-digital converter for evaluation in our measur-ing computer CMME 7000.

• The digital MSL-7000 laser signal is transferred via S/P-DIF for-mat to the miniStreamer board in the CMME 7000.

• The SKF measuring electronics with the SKF evaluation softwaregives much more information in the narrow-band spectrum thanthe broad-band parameters L, M and H. These results can beshown in µm/s or Anderon units.

• Different signal frequencies corresponding to a specific bearingcomponent (e.g. inner ring, outer ring, or rolling elements) can bemeasured and analyzed using time domain, enveloping tech-niques, narrow-band frequency analyses, Fourier transformationsand spectrum masks, together with a special digital filtering tech-nique FPM.

• The result identifies one or more possible defect types such as:contaminated components, cage noise, or bearing componentform deviations.

• Although relatively small damages can perhaps not be observed inany of the three vibration bands, they can be detected using theSKF peak analysis.

• The vibration measurement tolerances of various bearing typesare stored in the computer and all measurement data are com-pared with these tolerances. If the measurement data are withinthe tolerances, then the bearing continues it’s testing regime with-in the machine. However, if the measurement data are outside thetolerances, then the screen shows a reject message.

Measuring principleMVH 90E, MVH 200E

Measuring principleMVH 90EL, MVH 200EL

MEA 200 Pickup

SKF Laser VibrometerMSL-7000

Axial load via axialloading tool

Axial load via axialloading tool

Arbor Arbor

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Noise and vibration tester MVH 90E withradial loading unitFeatures:• Pickup MEA 200• Axial load• Radial load• Test objects:

Deep groove ball bearings, angular con-tact ball bearings, self aligning ball bear-ings, spherical roller bearings, etc.Additional cylindrical roller bearings, nee-dle roller bearings, etc.

Noise and vibration tester MVH 90EFeatures:• Pickup MEA 200• Axial load• Test objects:

Deep groove ball bearings, angular con-tact ball bearings, self aligning ball bear-ings, spherical roller bearings, etc.

Variants MVH 90For all machines optionally an additionalradial loading unit is available.The following shows all MVH 90 variants.

MVH 90E mechanics with axial load

MVH 90E mechanics with axial load and radial load

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Noise and vibration tester MVH 90ELFeatures:• SKF Laser Vibrometer MSL-7000

• Axial load• Test objects:Deep groove ball bearings, angular con-tact ball bearings, self aligning ball bear-ings, spherical roller bearings, specialbearings with unsymmetrical bearingouter ring, flange bearings, etc.

Noise and vibration tester MVH 90EL withradial loading unit

Features:• SKF Laser Vibrometer MSL-7000• Axial load• Radial load• Test objects:

Deep groove ball bearings, angular con-tact ball bearings, self aligning ball bear-ings, spherical roller bearings, sphericalroller bearings, special bearings withunsymmetrical bearing outer ring, flangebearings, etc.Additional cylindrical roller bearings, nee-dle roller bearings, etc.

MVH 90EL mechanics with axial load

MVH 90EL mechanics with axial and radial load

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Variants MVH 200Example noise and vibration testerMVH 200EFeatures:• Pickup MEA 200• Axial load• Test objects:

Deep groove ball bearings, angular con-tact ball bearings, self aligning ball bear-ings, spherical roller bearings, etc.

The MVH 200 is available in the same con-figurations as the MVH 90 described above.You can roder it with either the MEA 200 orMSL-7000 pickups and with a radial loadingunit.



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Please contact:SKF Österreich AGCondition Monitoring Centre – SteyrSeitenstettner Strasse 15 · Postfach 205 · A 4401 Steyr · AustriaTel: +43 (0)7252 797-571 · Fax: +43 (0)7252 797-574 · E-mail: [email protected]

Web: www.skf.com/cmc-steyr

® SKF is a registered trademark of the SKF Group.Windows is either a registered trademark or trademark of Microsoft Corporation in the United States an d/or other countries

© SKF Group 2014The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior writtenpermission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but n o liability canbe accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein. SKFreserves the right to alter any par t of this publication without prior notice.

PUB CM/P2 14583 EN · April 2014

Technical specifications subject to change without notice.

For more information on your specific application, please contact our engineers at CMC – Steyr.

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MVH 90 200EL Vibration Tester

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