Elastic Shaft Kit PT 500.10

Elastic Shaft Kit

Type: PT 500.10
Name: Elastic Shaft Kit
Technical Description

  This accessory setup enables the response of an elastic rotor to unbalanced excitation to be studied. The subcritical, supercritical and resonance running states can be demonstrated. A comparison of the orbits (path curves) in the subcritical and supercritical range is of particular interest.
  The field balancing of elastic rotors is another area which can be investigated. The supplied pendulum ball bearings ensure full mobility of the shaft. The retainer bearing limits the amplitudes to harmless values at speeds close to resonance.
  The accessory setup is mounted on the base plate of the machinery diagnostic PT 500 base system.
  To measure and evaluate the experiment, the computerised vibration analyser PT 500.04 and two displacement sensors PT 500.41 are required. It includes all the necessary sensors, a measuring amplifier and analysis software to record the vibration phenomena.

Learning Objectives / Experiments

- familiarisation with the terms 'critical speed’ and


- influence of unbalanced excitation
- balancing the elastic rotor
- influence of alignment errors
- understanding and interpreting frequency spectra
- use of a computerised vibration analyser

together with two displacement sensors PT 500.41

- study of the orbit in the subcritical and supercritical


* Flexural vibration of the elastic shaft1
* Resonance and critical speed
Available accessories
PT 500 -- Machinery Diagnostic System, Base Unit
PT 500.04 -- Computerised Vibration Analyser
PT 500.41 -- Two Displacement Sensors
Alternative products
TM 620 -- Bending Elasticity in Rotors
TM 625 -- Elastic Shafts

[1] investigation of flexural vibration of an elastic shaft
[2] stainless steel elastic shaft
[3] 2 bearing blocks with pendulum ball bearing
[4] 1 retainer bearing
[5] bearing blocks and retainer bearing with bores for sensor mounting
[6] accessory set for PT 500 machinery diagnostic training system
[7] stackable storage system to house the components


Technical Data

Elastic shaft
- min. diameter: D=10mm
- diameter at bearings: D=20mm
- length: 530mm
- nominal length between bearings: 450mm


Dimensions and Weight LxWxH: 600x400x120mm (storage system)
Weight: approx. 6kg Scope of Delivery 1 elastic shaft
2 bearing blocks
1 retainer bearing
1 storage system with foam inlay
1 manual Order Details 052.50010  PT 500.10  Elastic Shaft Kit