DuraShell™ and EquaTherm®

American Roller Company DuraShell™ and EquaTherm® Rolls have what it takes to meet your needs for new chill/heat transfer rolls and reconditioning or modification of your existing units.

Features and Benefits

DuraShell™

  • Shrink fit double shell spiral design provides uniform temperature control: ±0.5°C (±1°F).
  • Consistent performance under loads up to 2100 N/cm, higher if your process requires.
  • High precision: TIR (total indicator runout) of 13 μm standard.
  • Our large in house CNC machining capability, offers many diameter and face length combination to meet your requirements.
  • Low-carbon steel tubing, hard surfaced, overlaid with 420 stainless steel to 52 Rc.
  • More resistance to worm tracking than carburized and flame-hardened shells.
  • Lower reconditioning costs.

EquaTherm®

  • Maximum heat-transfer rate
  • Increased productivity. The heat-transfer efficiency of the EquaTherm® design lets you specify your rolls for maximum line speed, minimum roll size or anywhere in between.
  • Energy savings. The efficiency of the spiral design lets you operate at minimum flow rates, reducing costs associated with heating, cooling and pumping process water.
  • Improved product quality. Uniform temperature across the roll face, ±1ºF (±0.5ºC), combats across-the-web variations in gauge, appearance etc.

Service Offering

DuraShell™

  • Complete Design Engineering, Manufacturing, Hard Chrome Plating and Finishing
  • Hard Chrome Plating — 63-65 Rc hardness
  • Vertical Stress Relief — 42” (1065mm) dia. and 210” (5330mm) lengths
  • Dynamic Balancing — In accordance with ISO 1940/1

EquaTherm®

  • Computerized Heat Transfer and Mechanical Analysis — For Most Process Applications including: Cast Film, Extrusion Coating, Laminating, Coating, Metallizing; General Heating, Cooling and Roll Design
  • ASME Code Certified to manufacture and repair rolls — “U“ and “R“ Stamp Approved
  • Hard Chrome Plating — 63-65 Rc hardness
  • Acid Flushing and Flow Testing — Up to 10 tons – 500 GPM max
  • Roll Repair & Refinishing — Up to 40 in diameter by 120 overall length

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