Eccentric Rotor - Learn the effects of rotor eccentricity on vibration spectra.
- Determine relationships between eccentricity and unbalance.
- Develop techniques to locate and correct the effects of eccentricity.
- Learn the effect of varying the mass moment of inertia on vibration amplitude.
The kit consists of one aluminum rotor with an asymmetrically located center bore and one clamp collar |  |
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Cocked Rotor - Learn the effects of a sheave that has not been fitted to the shaft properly.
- Learn vibration signature of a cocked rotor.
- Develop methods to correct cocked rotor problems.
- Learn the effect of varying the mass moment of inertia on vibration amplitude.
The kit consists of a cocked aluminum rotor and one clamp collar. |
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Centrally Bent Shaft - Demonstrate the signature of a bent shaft.
- Observe the difficulty associated with attempting to balance a rotor with a bent shaft.
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Bearing Fault Kit
- Deliberately faulted bearings to learn waveform and spectra of classic bearing defects.
- Learn about signal processing issues such as averaging techniques, leakage, and spectral resolution on determining bearing faults.
- Perform experiments while increasing the severity of defects.
- Determine why ultra-high resolution spectrum is needed to diagnose a bearing fault when fault frequencies are located close to multiples of RPM.
- Learn how a large signal can mask adjoining low amplitude signals due to spectral leakage.
The kit contains: one inner race defect, one outer race defect, one with ball defect, and one combination of defects. The fault frequencies are very close to the multiples of shaft RPM. |
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Cocked Bearing Kit
Due to improper seating, bearings are sometimes not installed uniformly in the cavity, creating a cocked situation. Recognizing the signature of a cocked bearing is beneficial in that corrective action can be taken long before failure occurs. The kits consists of one bearing housing designed to exhibit this condition. |
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1" Diameter Shaft Bearing Fault Signature Study Kit - This system is designed to exhibit bearing fault frequencies further away from multiples of the shaft rotational speed (RPM). The standard MFS bearings (typical of many bearings) exhibit fault frequencies close to multiples of shaft RPM requiring ultra high-resolution spectra to clearly identify bearing fault frequencies. This kit is essential for a more complete study of rolling element bearing faults because real world applications include both types of bearings, one with fault frequencies close to multiples of RPM and one with fault frequencies away from the multiples of rotational speed.
- Identify bearing fault frequencies in the presence of defects at multiples of shaft RPM without using high resolution spectra.
- Understand signal processing issues such as averaging, spectral resolution and leakage phenomena.
- Perform experiments while increasing the severity of defects.
The kit includes two precision-machined split bearing housings, two 1" diameter ID bearings, one 1" diameter shaft, and one coupling. |
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1" Diameter Shaft Faulted Bearings Kit- The kit provides deliberately faulted bearings to learn waveform and spectra of classic bearing defects when bearing fault frequencies are not close to multiples of the shaft running speed (RPM).
- The kit includes four faulted bearings: one outer race, one ball, one inner race, and one combination defect.
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1" Diameter Shaft Bearing Loader - Demonstrate how rotor loading affects bearing vibration amplitude.
- Location can be adjusted axially.
- A radial load on bearings shows the effects of loading and enhances the spectral amplitude.
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Balancing Training Book
- The Balancing Training Book teaches the basics of machine balancing.
- Use prescribed laboratory exercises to enhance learning through hands-on experimentation.
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