Home           Products           Company           Contact us     
> Statics
> Strength of Materials
> Dynamics
> Fundamentals of Engineering Design
> Machinery Diagnosis
> Properties of Materials
Products  |  Engineering Mechanics and Machine Elements  |  Fundamentals of Engineering Design  |  TM 262
TM 262 Hertzian Contact Apparatus Show data sheet (pdf file) Print page
Technical Description

This portable unit demonstrates the characteristics of the contact area in the case of Hertzian contact.


A pressure pad made of rubber is pressed against a transparent plastic plate using a lever. Plate and pressure pad are convex. In this way both circular and also elliptical contact areas can be generated.


The force on the lever is measured with the aid of a spring balance and the contact area is measured. This can be clearly seen as it is illuminated from the side by a halogen lamp.


Learning Objectives / Experiments

- Characteristics of the contact area on point contact

  with varying contour radii
- Characteristics of the contact area as a function of

  the contact force
- Influence of an additional transverse component in

  the contact force


* Demonstration of the characteristics of a contact area

  particularly easy to see due to use of transparent

  plastic with silicone rubber

Alternative products
TM 260.02 -- Experimental Module Optical Elastohydrodynamics

[1] Benctop experiment for demonstrating Hertzian contact
[2] Pressure pad made of silicone rubber
[3] Transparent plastic pressure plate
[4] Dynamometer spring balance

[5] Sliding device for spring balance to allow continuously adjustable contact force

[6] Optimal illumination of the contact area using halogen light from the side
[7] Sturdy metal chassis with rubber feet

Technical Data

Spring balance

- 0...25N, graduations: 0.5N

Pressure pad: 60 Shore

Halogen lamp

- voltage: 12V

- power: 20W


Dimensions and Weight
l x w x h : 400 x 400 x 530 mm
Weight : approx. 16 kg
Required for Operation
230V, 50/60Hz, 1 phase
Scope of Delivery
1 complete experimental apparatus
1 instruction manual
Order Details
040.26200  TM 262  Hertzian Contact Apparatus
© 2005 G.U.N.T. Gerätebau GmbH