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TM 625

Whirling Shaft Apparatus

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

Features

* Laval rotor, self-centering
* Mode shapes of continuous rotor shafts
* Variation of bearing spacing and shaft diameter
* 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

Specification

[1] Table-top experiment on critical rotational speeds on simply loaded and continuous shafts
[2] 6 rotor shafts made of high-strength steel, diameters: Ø3mm, Ø6mm, Ø7mm
[3] Rotor shaft length: 600mm and 900mm
[4] Rotor disc: Ø80mm, 1kg, steel
[5] Drive via elastic coupling
[6] Motor: 0.37kW, rotational speed 0...6000rpm, electronically regulated, digital display, adjustment with 10-turn potentiometers, 2 rotational speeds can be preselected, can be switched as required
[7] Up to 4self-aligning bearings on the rotor shaft
[8] Up to 3 securing catch bearings with plastic packing can be positioned on the rotor
[9] Protective cover made of transparent plastic
[10] l x w x h: 1550x375x355mm

[11] 230V, 50Hz, 1 phase

Technical Data

Rotor shafts made of steel:
- diameter: Ø3, Ø6, Ø7mm
- length: 600mm, 900mm
Rotor disc: Ø80mm, 1kg, steel
Rotational speed: 0...6000rpm, electronically regulated, digital display
Motor: 0.37kW
Rotor bearing with up to 4 self-aligning ball bearings

Dimensions and Weight

l x w x h : 1550 x 375 x 355 mm
Weight : approx. 65 kg

Connections

230V, 50Hz, 1 phase

Scope of Delivery

1 complete experimental apparatus, 6 rotor shafts, 1 rotor disc, 1 instruction manual

Order Details

040.62500 TM 625 Whirling Shaft Apparatus