Lightweight and High Speed Composite Cores and Rollers

Carbon Fiber Rollers are designed for reduced weight and high critical speed. Lightweight, low-inertia rollers allow faster web speeds, reduce vibration, decrease waste and improve product quality.

Reasons for Choosing Composite Cores and Rollers

Reasons for choosing Composite Cores and Rollers includes:

  • Up to 75% lighter than metals.
    Lighter rollers mean less inertia and higher speeds
  • High stiffness to weight ratio.
    Reduced machine wear
  • Increased Machine Life.
    Less wear and tear on bushing, bearings and journals

Applications of Composite Cores and Rollers

Applications of Composite Cores and Rollers includes:

  • Printing Press Rollers
  • Process Rollers
  • Idler Rollers
  • Blown Film Lines
  • Laminating Lines
  • Paper and Film Machines

Features of Composite Cores and Rollers

Features of Composite Cores and Rollers includes:

  • FILAMENT WOUND CONSTRUCTION
  • CARBON FIBER AND/OR FIBERGLASS CONSTRUCTION
  • LARGE RANGE OF DIAMETERS
    From 1 inch to 42 inch
  • LARGE RANGE OF LENGTHS
    Up to 30 feet
  • CUSTOM ROLL ENDS
    Thru Shaft w/ bearings, Live Shaft, Internal
    Bearings w/ shafts
  • DYNAMIC BALANCING
  • WALLS AS THIN AS 0.060"
  • CUSTOM FINISHES AND COATINGS AVAILABLE

Mechanical Properties of Composite Cores and Rollers

The mechanical properties of Composite Cores and Rollers are listed in the table below.

Material Properties E-Glass Commercial Carbon High Modulus Carbon
Flexural Modulus Longitudinal, 106 x psi 5.5 14.0 21.0
Flexural Modulus Circumferential, 106 x psi 1.1 5.0 7.5
Tensile Strength Longitudinal, psi 115,000 130,000 130,000
Tensile Strength Circumferential, psi N/A 36,000 36,000
Compressive Strength Longitudinal, psi 5,000 130,000 130,000
Compressive Strength Circumferential, psi 26,000 50,000 50,000
Shear Modulus, psi x 106 1.0 1.0 2.2
Shear Strength, psi 8,000 8,000 8,000
CTE Circumferential, in/in/°F x 10-6 8.6 7.1 6.4
CTE Longitudinal, in/in/°F x 10-6 4.8 0.17 -43.6
Poisson's ratio, Nuxy 0.27 0.24 0.69
Density, Lb/in3 0.072 0.058 0.058

Over Wrapping Existing Cores and Rollers

Existing Cores and Rollers can be over wrapped for extended life. The table below shows the mechanical properties of Composite Cores and Rollers for Overwrap Repairs.

Material Properties E-Glass Commercial Carbon
Flexural Modulus Longitudinal, 106 x psi 1.2 1.3
Flexural Modulus Circumferential, 106 x psi 8.0 19.0
Tensile Strength Longitudinal, psi 5,000 6,000
Tensile Strength Circumferential, psi 210,000 210,000
Compressive Strength Longitudinal, psi 17,000 35,000
Compressive Strength Circumferential, psi 138,000 185,000
Shear Modulus, psi x 106 0.8 1.0
Shear Strength, psi 8,000 8,000
CTE Circumferential, in/in/°F x 10-6 3.7 -0.09
CTE Longitudinal, in/in/°F x 10-6 13.3 11.9
Poisson's ratio, Nuxy 0.08 0.02
Density, Lb/in3 0.072 0.058

This information has been sourced, reviewed and adapted from materials provided by Amalga Composites, Inc.

For more information on this source, please visit Amalga Composites, Inc.

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