Some Considerations on Vibration Diagnose of Miniature Ball Bearings

Abstract:

Vibration based fault detection and diagnose analysis is a well established field in machine or monitoring supervision. The vibration diagnose is also suited for the miniature ball bearings monitoring. The typical balls size starts at 3 mm with the bearing outer diameter of maximum 20 mm. Ball bearings of this size are ideal for precision mechanisms, they are able to carry light loads and they are perfect for handheld medical equipment and tools which must be very small but also very precise and durable. The paper presents experiments carried out on a fully instrumented universal CETR micro-tribometer at room temperature. The tested miniature ball bearing, lightly loaded and operating at low speeds, is subjected to dry and lubrication conditions with two different oil viscosities. A comparative study is realized concerning the vibration diagnose potential using the FFT analysis of the bearing acquired signals. Statistical analysis of the vibration signals is a key point in the detection of the overall vibration level of bearings lubricated with oils of different viscosities.

• Periodical: Applied Mechanics and Materials (Volumes 809-810)
• Pages: 670-675
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.809-810.670
• Online since: November 2015
• Authors: Iulian Paul Tărăboanţă, Viorel Paleu*, Carmen Bujoreanu, Marcelin Benchea, Dumitru Olaru
• Keywords: Fast Fourier Transform, Lubrication Regime, Micro Ball Bearings, Vibration Diagnose

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