Measuring wheels 300 mm with smooth, studded, corrugated or cross hatched knurling running surface

Aluminium measuring wheels for Encoders with different tread structures for linear measurement of a wide range of materials, very good concentricity properties, maximum measuring accuracy.

Technical data - measuring wheels

technical data MRAR 300 MRAP 300 MRAN 300 MRAG 300
material core aluminium aluminium aluminium aluminium
material running surface aluminium polyurethane polyurethane polyurethane
running surface structure cross-hatched knurling smooth studded corrugated
circumference 300 mm ±0,2 300 mm ±0,2 300 mm ±0,2 300 mm ±0,2
moment of inertia gcm2 1,42x103 1,33x103 1,11x103 1,33x103
weight app. 110 g 110 g 110 g 110 g
fields of application paperboard greased metals rough textiles ungreased metal
  timber steel profiles carpet laquered surfaces
  textiles laquered surfaces cable measurement synthetics
  rubber synthetics fleece paper-paperboard
  soft plastic paper-paperboard paper-paperboard timber
    timber timber textiles
    textiles synthetics glass
    wire   floor coverings
recommended pressure   15N 15N 15N
thread M5 M4 M4 M4


Thermal characteristics  
heat resistance short-term max.    100ºC
permanent temperature resistance max.     80ºC
cold resistance until     -30ºC

the specified temperature depends on the area of application

Due to the large number of possible application and operating conditions, no guarantee can be given for the behaviour of a polyurethane compound in all areas of application. It is the responsibility of the user to test the material selection in a specific application to determine its intended use.


  4 5 6 7 8 10
MRAR 300 x   x   x x
MRAP 300 x   x   x x
MRAN 300 x   x   x x
MRAG 300 x   x   x x


To download the step file, please select the required bore combination.

Further bore sizes on request.

Technical drawings