The BBS provides a basic setup for performing experiments and learning vibration signatures of unbalance and bearings malfunctions. Detailed investigation of particular and more advance vibration phenomena will require additional attachments and fixtures which are available through optional kits.
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Balancing Training Book (B-BK) |
- 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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Eccentric Rotor (M-ER-5/8) |
- 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 and one clamp collar.
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Cocked Rotor (M-CR-5/8) |
- 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 (0.5 degree off-axis) and one clamp collar.
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Centrally Bent Rotor Shaft for Balance Studies (B-BRS-5/8) |
- Demonstrate the signature of a bent shaft.
- Observe the difficulty associated with attempting to balance a rotor mounted on a bent shaft.
- Learn to cope with the alignment issues due to a bent shaft.
- The kit consists of one 5/8″ shaft centrally bent ~0.020″
- The kit consists of a cocked aluminum rotor (0.5 degree off-axis) and one clamp collar.
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1″ Shaft Bearing Study Kit (B-BSK-1) |
- Study bearing fault frequencies away from multiples rotational speed. The standard 5/8″ shaft exhibit fault frequencies close to multiples rotational speed, requiring ultra high resolution spectra to clearly identify bearing fault frequencies.
- Understand the signal processing issues such as averaging, spectral resolution, and leakage phenomena.
- The kit consists of two split bearing housings, two 1″ inside diameter bearings, one 1″ diameter shaft, and one coupling.
- The kit consists of one 5/8″ shaft centrally bent ~0.020″
- The kit consists of a cocked aluminum rotor (0.5 degree off-axis) and one clamp collar.
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5/8″ and 1″ Bearing Fault Kit (M-BFK-5/8 and M-BFK-1) |
- 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 with increasing severity of defects.
- Learn how a large signal can mask adjoining low amplitude signal due to spectra leakage.
- The kit consists of one inner race defect, one outer race defect, one with ball defect, and one combination of defects.
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5/8″ and 1″ Bearing Loader (M-BL-5/8 and M-BL-1) |
- Investigate bearing radial loading effects.
- Enhance the spectral amplitude of system.
- The kit consists of one 5/8″ or 1″ bore loader weighting 11lb (5kg) and two clamp collars.
- Learn how a large signal can mask adjoining low amplitude signal due to spectra leakage.
- The kit consists of one inner race defect, one outer race defect, one with ball defect, and one combination of defects.
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Cocked Bearing Housing (M-CBM-5/8) |
- Recognize the signature of a cocked bearing due to improper seating or due to inconsistent installation.
- The kit consists of one cocked bearing housing.
- The kit consists of one 5/8″ or 1″ bore loader weighting 11lb (5kg) and two clamp collars.
- Learn how a large signal can mask adjoining low amplitude signal due to spectra leakage.
- The kit consists of one inner race defect, one outer race defect, one with ball defect, and one combination of defects.
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5/8″ Sleeve Bearing Resonance Study Kit (M-SBK-5/8) |
- Investigate waveform and spectral recognition of worn or loose fitting bearings.
- Modify the clearance of the split bearings with plastic shims.
- Perform shaft orbital analysis.
- The kit consists of two customized grease-lubricated, babbitt lined sleeve bearings, two bearing pedestals, and various thickness plastic shims.
- The kit consists of one inner race defect, one outer race defect, one with ball defect, and one combination of defects.
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