Epoch Industries Lightweight Carbon Fiber Composite Idler Rollers

Carbon Fiber Rollers / Rolls

Carbon Fiber Idler Rollers - Live Shaft
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Live shaft rollers have a shaft (axle) that is fixed to the idler roll and therefore rotates with the roller body. The roller bearing is mounted to the machine frame, generally a pillow block or flange mounted bearing.

Carbon fiber live shaft idler rolls

When an application requires lightweight idlers, Epoch composite idlers are the best choice. These idlers are ideal for running wider, lighter weight webs at higher critical speeds, and are the lightest standard idlers we manufacture. 


Epoch composite idler rollers are made using 1/8" wall (3/16" in larger sizes), carbon fiber/epoxy matrix composite. The tube has nearly double the stiffness-to-weight ratio of aluminum, yielding rolls that are unmatched for their low rolling inertia. Made for medium to low web tension applications, these rolls include our removable bearing carriers with stainless steel stub shafts. The bearing carriers decrease bearing replacement time, lower the weight of the assembly, have lower breakaway torque, and lower rolling drag than other idler rolls. All this adds up to an idler that can ramp up to speed faster, stops quicker, and maintains line speed better than heavier idlers. 


A special feature of Epoch composite rolls is that they can easily be converted to live shaft rolls by using bolt-on live shafts.


These idlers are dynamically balanced to ISO grade G6.3. Each roll is machined to precision tolerances and has a 63 RMS surface finish across the face.



  • 75% - 80% lower rolling inertia than comparable standard aluminum idlers, the lowest of any idler 
  • 85% - 90% lower total roll assembly weight than comparable standard aluminum idlers, the lowest of any idler 
  • The lowest breakaway torque and rolling drag of all our bearing assemblies 
  • Non-corrosive in ambient environment 
  • Lower maintenance costs 
  • Low total assembly weight 
  • Easier installation 
  • Lower shipping weight 
  • Better tension control 
  • Less loading on machine frame 
  • Surface more dent resistant than aluminum 
Illustrations, Specifications, & Prices

Lightweight Composite Live Shaft Idlers

  • 3.0" Nominal Outside Diameter
  • 4.0" Nominal Outside Diameter
  • 5.0" Nominal Outside Diameter
  • 6.0" Nominal Outside Diameter

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