Amalga Composites, Inc.COMPOSITE CORES & ROLLERS
for lightweight, high speed

Composites...the Better Choice

  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

  Printing Press Rollers
  Process Rollers
  Idler Rollers
  Blown Film Lines
  Laminating Lines
  Paper and Film Machines
  Many other applications



Composite Core Features

  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



Amalga Composites Cores and Rollers are designed, engineered and manufactured to meet the toughest applications


CORES/ROLLERSBuilt for maximum stiffness.
Material PropertiesE-glassCommercial CarbonHigh 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 8,0008,000
CTE Circumferential, in/in/ºF x 10-6 8.6 7.1 6.4
CTE Longitudinal, in/in/ºF 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

OVERWRAP REPAIRSExisting Cores and Rollers can be over wrapped for extended life.
Material PropertiesE-glassCommercial 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/ºF x 10-6 3.7 -0.09
CTE Longitudinal, in/in/ºF x 10-6 13.3 11.9
Poisson’s ratio, NUxy 0.08 0.02
Density, Lb/in3 0.072 0.058


Specific Modulus Comparison

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The Composite Professionals at Amalga Composites

                         are ready to answer all of your questions,  contact us!