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PT 500.13 Couplings kit



  • Vibration analysis of couplings
  • Eccentricity, wobble and pitch fault
  • Properties of different coupling types: pin coupling, curved teeth coupling, flange coupling, claw coupling


Technical Description

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 500.13 accessory 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 500.05 load 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 500.04 is required. It includes all the necessary sensors, a measuring amplifier and analysis software to record the vibration phenomena.

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 eccentricity, wobble and pitch fault, on the running of the machine
  * flange coupling with no fault
  * flange coupling with eccentricity
  * flange coupling with wobble
  * 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


[1] investigation of the vibration behaviour of various coupling types with and without faults
[2] curved teeth coupling
[3] 3 different coupling stars for the elastic claw coupling of the base unit PT 500
[4] flange coupling with no fault
[5] flange coupling with eccentricity
[6] flange coupling with wobble 
[7] pin coupling with and without pitch fault
[8] experimental setup can be used with brake and load unit PT 500.05
[9] accessory set for PT 500 machinery diagnosis training system
[10] 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
- eccentricity (centre offset): 0,2mm
- wobble: 0,4 +/-0,1mm

Dimensions and Weight
LxWxH: 400x300x170mm (storage system)
Weight: approx. 6kg

Scope of Delivery
1 curved teeth coupling
1 flange coupling with no fault
1 flange coupling with eccentricity
1 flange coupling with wobble
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

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