Carbon Fiber Idlers & Rollers

The Advantages of Carbon Fiber Idlers & Rollers Include:

  • High strength and rigidity means less deflection across the roll face.
  • Less deflection will result in faster web speeds and better web alignment.
  • Lower weight means smaller drives, less startup inertia and less wear on bearings
  • Carbon fiber rollers have faster speeds because the lower weight results in increased critical speeds
  • Supporting technical data on the reverse side of this sheet

Carbon fiber rollers increase efficiency and reduce maintenance

Carbon Fiber materials, developed for aerospace applications, are gaining increased acceptance in industrial roller applications because of their reduced weight and inertia, and high relative stiffness. For a 3.5 inch diameter roller with a 74 inch face length, quarter inch wall, that the carbon fiber roll weighs about 20% of what a comparably dimensioned steel roll would weigh, and 58% of what an aluminum roll weighs. This reduced mass results in reduce bearing loads, which increases bearing life and therefore reduces maintenance costs. In addition, ease of maintenance is increased as large rolls can be handled by a single man without crane support. Carbon fibers are manufactured of two types of material: PAN (polyacrylonitrate) fibers and pitchbased fibers. Each type has its own advantages. The PAN carbon fiber has about 50% higher ultimate strength than the pitch-based fiber roll, but the pitch-based fiber roll has a Modulus of Elasticity approaching that of steel, resulting in less roll deflection. The carbon fiber roll can have as little as 35% of the deflection of an aluminum roll.

Carbon fiber rollers reduce operating costs

The reduced weight of the carbon fiber roller also results in higher resonant frequencies. The pitch-based carbon fiber roll has a resonant frequency twice as high as a steel roll, resulting in the potential of twice the processing line speed. The reduced weight also results in a reduced mass moment of inertia. The carbon fiber roller has about a fifth of the mass inertia of a steel roll. This means it will take one fifth of the torque to accelerate the roll to line speed and one fifth the energy, resulting in reduced operating costs. Have a question about our carbon fiber rollers? Contact us today!

"I feel the carbon fiber roller, used as an idler or coupled with one of our proven rubber coverings, offers an alternative to steel and aluminum cores that can provide significant advantages in certain applications, particularly when weight and inertia are important considerations." - Matt Menges