Vibrations in fans kit (PT 500.18)

Vibrations in fans kit (PT 500.18)

vibration measurements on fans

Code PT500.18


  • Vibration measurements on fans and blowers play a major role in field monitoring operations.
  • In addition to the usual signals caused by bearings and imbalance, the vibrations induced by the fan blades can be measured.
  • The vibrations are induced by inhomogeneous flow fields.
  • The PT 500.18accessory set induces the vibrations magnetically.
  • Three fan rotors with differing numbers of blades can be investigated.
  • A guard plate covers the rotating fans.
  • An obliquely-mounted inertia disk is used to investigate the gyroscopic effect.
  • Just as in actual practice, the fan model can also be driven directly via a flexible coupling or by the belt drive PT 500.14.
  • The accessory set is mounted on the base plate of the machinery diagnostic base system PT 500.
  • To measure and evaluate the experiment, the computerised vibration analyser PT 500.04is required.
  • It includes all the necessary sensors, a measuring amplifier and analysis software to record the vibration phenomena.

Technical Details:


  • investigation of the vibrations of fans
  • model of an axial fan with blades
  • magnetic induction of blade forces
  • obliquely-mounted inertia disk to investigate gyroscopic effects
  • 3 fan rotors with different numbers of blades
  • guard disk for fan rotors
  • gap between magnet and blades adjustable
  • can be used with belt drive PT 500.14
  • accessory set for PT 500 machinery diagnostic training system
  • stackable storage system to house the components 

Technical Data:

  • Sheet-steel fan rotor:
    • 3 blades
    • 5 blades
    • 7 blades
    • Ø 204mm
    • speed: 3000min-1
  • Protective disk, made of aluminium:
    • Ø 220mm

Dimensions & Weight:

  • L x W x H: 400x300x320mm (storage system)
  • Weight: approx. 6kg

Learning Objectives/Experiments:

  • vibration measurement on fans
  • measurement of blade pass frequency
  • identification of the vibration induced by the blades from the vibration spectrum
  • effect of dynamic imbalance on the fan
  • understanding and interpreting frequency spectra
  • use of a computerised vibration analyser

Scope of Delivery:

  • 3 fan rotors
  • 1 mass disk
  • 1 holder
  • 1 guard disk
  • 1 storage system with foam inlay
  • 1 manual


  • vibration measurements on fans
  • simulation of blade-induced vibrations


  • Required:
  • PT 500 Machinery diagnostic system, base unit
  • Optional:
  • PT 500.14 Belt drive kit

Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.