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TM 210: Dry Friction

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Dry Friction

Dry Friction Dry Friction Dry Friction

Product Details

Technical Description 
The precision measuring unit is used to determine coefficients of friction experimentally. Several different pairs of materials with varying surface finishes can be investigated. During this process, the specimen under examination is stationary and the supporting friction surface is pulled past it. In this way a stable force measurement is made over the measuring range 0...2N with a resolution of 0.05N. The force dial gauge is equipped with an air damper to compensate slip-slap effects to a large degree. The supporting friction surface is driven using an electrical synchronous motor. The drive provides two constant speeds. The normal force can be changed by adding weights. The sturdy benchtop unit was specially designed as a student experiment.

Learning Objectives / Experiments
- Qualitative static and sliding friction
- Friction forces as a function of
  + normal force
  + materials used
  + surface finish of the materials
- Friction forces as a function of the friction area
- Influence of the relative speeds of the friction materials on the friction
* Stationary friction specimen, supporting friction
  surface in motion1
* Improved precision by means of air damping

[1] Benchtop unit on mechanical friction, designed as a student experiment
[2] Friction body stationary, supporting friction surface in motion
[3] 2 feed speeds
[4] Air-damped precision dynamometer
[5] 2 friction bodies, 3 friction plates
[6] l x w x h 650x150x100mm
Technical Data
Drive: synchronous motor
Feed speeds: 2.35m/min and 4.70m/min
Dynamometer with air damper
- measuring range: 0...2N
- resolution 0.05N
Weights: 8x0.5N
Dimensions and Weight
l x w x h : 650 x 150 x 100 mm
Weight : approx. 7 kg

Scope of Delivery
1 complete unit, 1 instruction manual

Order Details
040.21000  TM 210  Precision Friction
                     Measurement Apparatus

Alternative products
TM 110.01 -- Supplementary Kit Inclined Plane and Friction
TM 200 -- Friction Measurement Apparatus
TM 225 -- Friction on Inclined Plane

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
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