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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
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/ROLLERS | Built for maximum stiffness. |
| 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/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 REPAIRS | Existing Cores and Rollers can be over wrapped for extended life. |
| 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/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 |
