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Non Woven Rolls

non woven rolls

Discover the unbeatable advantages over conventional rubber-, PU-, or steel rolls.

FM-Rolle Wöhler
  • Best wringing and squeezing results through "sponge effect"
  • Individual residual moisture levels
  • Excellent grip on dry, wet and oily strip surfaces
  • Consistently high friction coefficient over the complete service life
  • No aquaplaning or airplaning
  • Elastic and gentle covering surface
  • Internal oiling or rinsing possible
  • Extremely durable porous fibre structure
  • Individual replacement of damaged sections
FM-squeezing Wöhler

Nonwoven qualities

Our FM nonwoven material was specially developed by us to offer industrial users outstanding properties in critical applications.

All our experience made over the years in the demands set on nonwoven rolls has been effectively fed back into our continuous development process.

Apart from the standard qualities listed below there are also special qualities available for specialised applications.

Nonwoven qualities

Our FM nonwoven material was specially developed by us to offer industrial users outstanding properties in critical applications

rubber roll squeezing

A rubber roll absorbs no fluids.

FM-Roll squeezing Woehler

The “sponge effect” of a nonwoven roll

coefficients of friction FM-Rolls Woehler

Excellent grip on dry, wet and oily strip surfaces.

CSM FM Logo
691
CSM FM Logo
693
CSM FM Logo
898
Working temperature
100°C
100°C
180°C
Chemical restistance (pH)
4-12
0-10
0-14
Outer diameter
max. 1524mm
Covering length
max. – 5500mm
Covering thickness
~12 – 150 mm
Hardness
55 A – 65 D (Shore DIN 53505)
Core geometry
metric, inch sizes, custom specific

applications

FM® rolls stand out for their excellent wringing and squeezing performance and high friction coefficient even on oily and wet surfaces.

Our FM®-rolls ensure minimal residual oil levels on strip surfaces in all kinds of cold rolling mills. This allows you to run your duo, four-high, Z-high or 20 roll stand at top speed for highest productivity. Furthermore, metal chips and other particles are absorbed by the porous fibre structure of the nonwoven covering, preventing surface damage of the strip.

The high friction coefficient guarantees permanent synchronous running with the strip and the risk of aquaplaning is eliminated. FM®-rolls provide exact strip speeds as measuring rolls and draw even the oiliest of strips as infeed drivers.

Our FM®-rolls are successfully operated in slitter and cutting lines as feeding, drive and bridle rolls. Slippage and strip migration are effectively prevented by the excellent friction coefficients of our FM®-rolls, allowing high strip tension to be realised in confined space!

Modern high tensile materials, advanced strip specifications or increased quality demands quickly push conventional roll coatings to their limits – slipping strip in auxiliary drivers or feeding rolls, insufficient grip on stopping in S-rolls or residual rinsing water on the strip: The direct installation of our nonwoven rolls offers a quick and cost-effective process optimisation.

Our expert team is at your service in determining appropriate applications for our FM®-rolls and designing them to your requirements and specifications!

 

Our FM®-rolls effectively wring or squeeze all kinds of fluids from your strip, such as alkaline degreasants, pickling agents, rinsing cascades, final rinses, coolants or passivating agents.
Minimal residual moisture levels and dry strip edges relieve the load on your dryer, while boosting process reliability. Together with our roll brushes you will achieve the best possible surface qualities!
Multiple service life and higher friction coefficients compared to conventional coatings make our FM®-rolls the first choice for your S-rolls. Make the change and solve your problems with slipping!

Whether upgrading existing lines or used for the compact design of new lines – our FM®-rolls ensure that high torque is transmitted onto the strip without slippage. Plant manufacturers and steelworks worldwide rely on the consistently high friction coefficient of our FM®-rolls.
Experience outstanding durability and bring your strip on correct course under correct tension!

FM®-traction rolls with their high friction coefficient even on wet and oily surfaces are predestined for various different kinds of transport and feeding applications.

Engineering

FM®-rolls are optimally calculated and designed to the respective customer specific operating conditions using the latest computer programs and the finite element method (FEM).

Woehler-TB Production shop

Engineering

FM®-rolls are optimally calculated and designed to the respective customer specific operating conditions using the latest computer programs and the finite element method (FEM).

Strength verification in accordance with DIN 743 Standard taking account of:

  • All known forces and loads
  • The core geometry with all form and surface influences
  • The material

Calculation of the required crowning of the coating

compensating roll deflection in operation and ensuring a consistent line pressure, considering:

  • Radial forces and line load
  • Net weight of the roll
  • Bearing stiffness
  • Additional impact forces
Safety against fatigue failure Woehler

     Safety factor against fatigue failure

defelction diagram

Calculation of roll deflection for establishing the required crowning