Couplings kit (PT 500.13)

vibration analysis of couplings



  • Rotating machine elements are interconnected by way of couplings.
  • A coupling exhibiting production or assembly faults generates machine vibrations which can be analysed to give an indication of specific faults or damage.
  • The PT 500.13accessory set can be used to simulate various faults and investigate their effects on vibration behaviour.
  • The properties of various coupling types can also be compared.
  • The curved teeth, pin, flange and claw coupling types are investigated.
  • The couplings are installed between the motor and the shaft.
  • The PT 500.05load unit will also be required to investigate the behaviour of the couplings under load.
  • The accessory setup 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 vibration behaviour of various coupling types with and without faults
  • curved teeth coupling
  • 3 different coupling stars for the elastic claw coupling of the base unit PT 500
  • flange coupling with no fault
  • flange coupling with radial run-out
  • flange coupling with axial run-out
  • pin coupling with and without pitch fault
  • experimental setup can be used with brake and load unit PT 500.05
  • accessory set for PT 500 machinery diagnostic training system
  • stackable storage system to house the components

Technical Data:

  • Pin coupling:
    • 1x centric pin
    • 1x eccentric pin:
    • eccentricity of pin: 1mm
    • max. pitch fault: 180° ±1,909°
    • Coupling stars for claw coupling:
      • 98 Shore A (red)
      • 92 Shore A (yellow)
      • 64 Shore D (green)
      • 80 Shore A (blue, included in PT 500)
      • Flange coupling:
        • radial run-out (centre offset): 0,2mm
        • axial run-out: 0,4 ±0,1mm

Dimensions & Weight:

  • L x W x H: 400x300x170mm (storage system)
  • Weight: approx. 6kg

Learning Objectives/Experiments:

  • effects of alignment errors on different coupling types:
  • pin coupling with offset
  • claw coupling with offset
  • effects of production faults such as radial run-out axial run-out and pitch fault, on the running of the machine:
  • flange coupling with no fault
  • flange coupling with radial run-out
  • flange coupling with axial run-out
  • pin coupling with no fault
  • pin coupling with pitch fault
  • identification of coupling faults from the vibration signal
  • load dependency of running behaviour
  • influence of gear rim hardness on claw couplings
  • comparison of curved teeth, pin, flange and claw couplings
  • understanding and interpreting frequency spectra
  • use of a computerised vibration analyser

Scope of Delivery:

  • 1 curved tooth coupling
  • 1 flange coupling with no fault
  • 1 flange coupling with radial run-out
  • 1 flange coupling with axial run-out
  • 1 pin coupling with adjustable pitch fault
  • 3 coupling stars
  • 1 bearing block
  • 1 set of tools
  • 1 storage system with foam inlay
  • 1 manual


  • vibration analysis of couplings
  • radial run-out, axial run-out and pitch fault
  • properties of different coupling types: pin coupling, curved teeth coupling, flange coupling, claw coupling


  • Required:
  • PT 500 Machinery diagnostic system, base unit
  • Optional:
  • PT 500.05 Brake & load unit

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