MS710 · Elastic Shaft Experiment

Elastic shaft experiment — flexural vibration, resonance and critical speed

Experiments

Familiarisation with the concepts of critical speed and resonance in rotating machinery
Subcritical, resonance and supercritical operating regimes of an elastic rotor
Influence of unbalanced excitation on the elastic shaft
Field balancing of elastic rotors
Influence of alignment errors on the elastic rotor
Study of the rotor orbit in the subcritical and supercritical range (with two displacement sensors)
Interpretation of frequency spectra and use of the Sangari vibration analysis software
Works together with the MS700 base unit

Description

The MS710 experiment lets students explore the response of an elastic rotor to unbalanced excitation. The slender shaft runs in pendulum ball bearings that accommodate its full mobility, while a safety bearing limits amplitudes near the first resonance. By sweeping the drive speed, the subcritical, resonance and supercritical regimes can be demonstrated and the orbit analysed in two planes.

MS710 elastic shaft experiment — schematic

Overview

Specifications

Elastic shaft stainless steel, min. Ø 10 mm, Ø 20 mm at bearings

Shaft length 530 mm total; nominal length between bearings 450 mm

Bearings 2 bearing blocks with pendulum ball bearings, 1 safety bearing

Sensor mounting bores on bearing blocks and safety bearing for displacement / acceleration sensors

Compatibility designed for the MS700 base unit; requires two displacement sensors

Storage 600 × 400 × 120 mm stackable case with foam inlay

Weight approx. 6 kg

Part of package

Machinery Diagnostics Lab

A modular training system for vibration measurement and condition monitoring of rotating machinery. Built around the MS700 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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