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Products  |  Engineering Mechanics and Machine Elements  |  Dynamics  |  TM 625
TM 625 Whirling Shaft Apparatus Show data sheet (pdf file) Print page
Technical Description

  The modes of oscillation and resonances of rotors with continuous mass distribution can be clearly demonstrated using this unit. Due to the use of thin, elastic rotor shafts made of high-strength steel, the oscillatory phenomena can be easily understood. A range of shaft diameters and the free choice of the bearing arrangement make it possible to perform a wide variety of experiments. Adapters in the bearings compensate for different diameters, catch bearings limit the amplitude of the oscillation. The freedom of movement of the rotor is assured by an elastic coupling. A Laval rotor with discrete mass distribution can be assembled using a mass disc. As a supplement to this unit, a set of vibration sensors, TM 620.01, is available. These enable the path of the rotor to be displayed on an oscilloscope.

Learning Objectives / Experiments
Speed-dependent experiments on rotation
- modes of oscillation of a rotor shaft with individual
  masses (Laval rotor)
  * critical speed
  * self-centering
- modes of oscillation of a continuous rotor shaft
  * for varying bearing spacing
  * for varying shaft diameter
* Laval rotor, self-centering1
* Mode shapes of continuous rotor shafts1
* Variation of bearing spacing and shaft diameter1
* Transparent protective cover enables the
  experiment to be optimally observed
Available accessories
TM 151 -- Sensor Supply Module
TM 620.01 -- Vibration Sensors with Clamping Set
Alternative products
PT 500.10 -- Elastic Shaft Kit
TM 620 -- Critical Speed Investigation Apparatus

[1] experimental unit on critical rotational speeds on simply loaded and continuous shafts
[2] 6 rotor shafts made of high-strength steel,
[3] rotor disc made of steel
[4] drive via elastic coupling
[5] motor: adjustable speed, digitally display, adjustment with potentiometers, 2 rotational speeds can be preselected, can be switched as required
[6] up to 4self-aligning bearings on the rotor shaft
[7] up to 3 securing catch bearings with plastic packing can be positioned on the rotor
[8] protective cover made of transparent plastic

Technical Data

Rotor shafts made of steel
- diameter: 3mm, 6mm, 7mm
- length: 600mm, 900mm

Rotor disc made of steel

- diamter: 80mm

- weight: 1kg


- power: 0,25kW

- speed: 0...6000min-1

- speed electronically controlled

Dimensions and Weight
LxWxH: 1.550x380x450mm
Weight: approx. 60kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery

1 complete experimental unit,

6 rotor shafts

1 rotor disc

1 instruction manual

Order Details
040.62500  TM 625  Whirling Shaft Apparatus
© 2005 G.U.N.T. Gerätebau GmbH