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KD712 · Roller Bearing Faults

Roller bearing faults experiment - condition monitoring via vibration analysis

Experiments
  • Vibration spectrum of the running noise of a roller bearing
  • Envelope analysis - isolating high-frequency shock signatures of bearing damage
  • Influence of damage to outer race, inner race and rolling element on the spectrum
  • Identification of a combined-damage bearing and of a long-running (worn) bearing
  • Estimating remaining service life of roller bearings
  • Influence of lubricant type and quantity on the vibration signature
  • Radial loading via the belt drive KD714
  • Works together with the KD700 base unit
KD712
Description
    Vibration analysis is the standard non-intrusive technique for assessing the condition of a rolling bearing. The KD712 experiment provides six bearings - one new reference and five with targeted damage types - that the student mounts, in turn, in the provided bearing block and loads radially through the KD714 belt drive. Using envelope analysis, the characteristic frequencies of each defect can be identified in the spectrum.
KD712 roller bearing faults experiment - schematic
Bearing block with sensor fixing points
Undamaged reference bearing
5 bearings with defined damage
Circlip pliers for bearing exchange
KD712 roller bearing faults experiment - schematic
Bearing block with sensor fixing points
Undamaged reference bearing
5 bearings with defined damage
Circlip pliers for bearing exchange
Types of bearing defects to be studied
    No damage Damage toouter race Damage toinner race Damage torolling element Combineddamage Severe wear(long-running)
Specifications
    Bearing type pendulum ball bearing NU204-E-TVP2
    Geometry inner Ø 20 mm, outer Ø 47 mm, width 14 mm, 12 rollers
    Included bearings 1 new reference + 5 damaged: outer race, inner race, rolling element, combined, long-running
    Accessories bearing block, 2 circlips, circlip pliers
    Radial loading via KD714 belt drive
    Compatibility designed for the KD700 base unit
    Storage 400 × 300 × 120 mm stackable case with foam inlay
    Weight approx. 4 kg

Part of package

Machinery Diagnostics Lab

KD700 KD705 KD710 KD711 KD712 KD713
KD714 KD715 KD716 KD717 KD718 KD719

A modular training system for vibration measurement and condition monitoring of rotating machinery. Built around the KD700 base bench, it covers rotor dynamics, coupling and bearing faults, belt drives, gears, cavitation, fan and motor vibration through interchangeable experiments.

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