Core Shafts

Core shafts are used throughout the converting and packaging industries to unwind and rewind web material. Winding shafts usually expand to grip the inner diameter of a core to help control web tension.

 

Double E offers the right core shaft for your converting application.

• Carbon Fiber Expanding Core Shafts (Lug Style)
• Carbon Fiber Through Shafts (Non-Expanding)
• Strip Shafts (External Gripping Element)
• Pneumatic/Mechanical and Fully Mechanical Expanding Core Shafts
• Differential Rewind Shafts
• Reel Spool Shafts (Expanding and Non-Expanding)

More Info Carbon Fiber Core Shafts

DLB-2000 Carbon Fiber Expanding Core Shafts
For Unwind and Rewind Applications


CF-1000 Carbon Fiber Through Shafts
(Non-expanding core shafts are available
for through-roll support using air chucks)

• Carbon fiber shaft body provides the strength of steel at a fraction of the weight.
• Proprietary corded polyprene internal bladder expands with air to force the lugs to grip the inner diameter of the core. The special bladder material reduces bladder failure and minimizes maintenance.
• Deep journal insertion and a close tolerance fit provide a high-strength connnection, yet ensures easy maintenance access when necessary.
• Comprehensive two year warranty even includes bladder (most applications).

More Info Expanding Core Shafts (Lug Type ~ Aluminum or Steel Housing)

DG-2000 Expanding Core Shafts in Steel or Aluminum
(for unwind and rewind applications)

• The same design features as the carbon fiber core shaft, with a metal housing.

More Info External Element (Strip Design) Expanding Core Shafts

SR-2000 Strip Core Shafts
(for multiple slit rewind applications)

• For multiple slit rewinding.
• Simple clamping unit secures bladder/gripping element assembly for easy maintenance.
  
• Durable hard rubber grippers offer excellent core grip.
  
• Protective Teflon strip covers bladder to reduce liklihood of bladder failure.
  
• Brass air valve resists corrosion.

More Info Pneumatic/Mechanical & Mechanical Expanding Core Shafts

Pneumatic/Mechanical and Fully Mechanical Core Shafts (for high-speed and/or heavyweight winding applications)

• Mechanical operation for strongest grip.
• Intended for aggressive applications where rolls are heavy and line speeds are fast.
• Independent lug action accommodates core variations.
• Concentric expansion reduces vibration and roll bounce.
• Roll security is guaranteed because of fail-safe design.

More Info Differential Rewinding Core Shafts

Differential Rewind Core Shafts
(for multiple slit differential rewinding applications)

• Works in low or high tension applications.
• Allows narrow and/or varying slit widths and yields uniformly wound rolls.
• Slipping occurs inside the shaft so no core dust is crated – contamination is minimized.

More Info Carbon Fiber Expanding Reel Spool Shafts

RS-2000 Expanding Carbon Fiber Reel Spool Core Shaft (for reel spool winding applications)

• Much lighter in weight than expanding steel shafts; requires far less driving energy.
• Carbon fiber housing allows faster critical speeds without increasing core size.
• Pneumatic/mechanical system ensures true concentric expansion.
• Traditional non-expanding reel spools also available.