Advantages:

• Higher Longitudinal Modulus 
  • Unlike braided carbon fiber composites which are limited to 10 mpsi, filament wound tubes are available in 15, 21, 28, and 38 mpsi as a standard grade longitudinal Modulus of Elasticity.
• Greater Tension Ranges 
  • The increased stiffness of high modulus composite rolls are required by machinery manufacturers to be used in advanced equipment able to handle wider ranges of web tensions.
• Greater Web Speeds 
  • Stiffer roll material raises the first critical speed (natural frequency) of the roll, permitting faster web speeds.
• Electrically Conductive 
  • The O.D. is ground down to the finish diameter, exposing the fibers to the web. Thus, static electricity is allowed to transfer through the roll body.

Disadvantages:

• High Price 
  • Filament wound tubing is still more expensive than braided composite tubing.
• Low Impact Resistance 
  • Filament wound tubing is more brittle than our braided composite tubing. Special provisions are necessary if there will be any impact to the tube.
• Low Hoop Strength 
  • Epoch will only sell filament wound tube in thickness of 1/8" or more to ensure that the aluminum ends do not come loose.

Limitations:

• Maximun Temperature is 325 deg. F. 
• Soft surface can be damaged by a box knife 
• Shear modulus, Elongation percentage, and Impact Values are much lower than steel