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Coil/Stock Straightening Machines

Colt Automation Coil/Stock Straightening Machines

Production Resources offers 7, 9, 11,19, and 21 roll straighteners designed primarily to remove coil set and reduce crossbow. The 19 and 21 roll models approach the performance of levelers. We also offer coil straightener lines specially designed for HSLA steel applications. Material type, tensile strength, thickness, cross section, and line speed all affect straightener requirements for roll spacing, roll diameter, number of rolls, and horsepower.


Colt Automation Powered Straighteners for Sheet Metal Coil Processing

Colt Automation manufactures light-duty, medium-duty, heavy-duty and extra heavy-duty Straighteners processing steel coils in a range of gauges and sizes from 6” to 84” wide and roll diameters from 2” to 8”. All of Colt’s Straighteners share these common elements:

  • Solid Frame construction
  • Heavy-Duty Entry Guides with 2″ Self Centering Acme Threaded Rod
  • 52100 Aviation Bearing Quality Roll Material for Straightener & Pinch Rolls (Rockwell 60/64)
  • Large Roll journals with full outboard roll support
  • Entry and Exit Pinch Rolls
  • Counterbalanced Pinch Roll design (Weightless Pinch Roll settings) allowing very thin Material (.020”) and exotic marking sensitive material processing (aluminum, perforated, coated, painted)
  • Bauer Straightener Motors (expected life to 40 yrs)
  • Backup roll support from single to quadruple Backup rolls in order to limit deflection when running narrow or AHSS material
  • Bearing quality zero back lash gears with hardened teeth
  • Optional satin or chrome flash finish coating
  • Catenary support
  • Material detection sensors
  • Absolute encoders at each Straightener Roll
  • Fully Automated as desired
Colt automation power straightener with options
Colt Automation power straightener with options

Straightener options available to handle heavy high tensile coil stock and provide hands free material threading.

  • Stock peeler to position the leading edge of a coil from the stock reel to the straightener entrance pinch rolls.
  • Debender/threader/hold down to remove “kinks” from the leading edge of the coil and assist in getting material started into the straightener.
  • Entrance and exit pinch rolls
  • High horsepower drives
Colt automation ltd pre-ship straightener
Colt Automation LTD Pre-Ship Straightener



Colt only uses 52100 Aviation Grade Alloy for Straightener Roll Construction. Once ground and polished, COLT Straightener Rolls meet or exceed RC 60/64…the Hardest Rolls Manufactured!
ALWAYS INNOVATING Using the latest Variable Frequency Drives with Ethernet /IP interface. When integrated with a laser loop sensor, your Colt Straightener and Uncoiler will run at constant speed, matching the throughput of the Feeder eliminating the start/stop motion. This will reduce wear and tear and increase service life of drive components.


Colt has always built the toughest equipment available, capable of processing High Strength Steel. As the composition of steel including: AHSS | HSLA | Dual Phase has evolved, so has Colt Straighteners. Our engineering science & calculations build in generous service factors. This ensures limited, if any roll deformation or deflection when processing the toughest strength steels, resulting in less wear and downtime.

STRAIGHTENER quality manufacturing includes wider side plates, full outboard support, larger roll journals, bigger drive gears and stronger drive trains. We machine all transitions with large radius to limit metal fatigue and reduce possible shear points.
Pinch Rolls are Flash chromed with #3 matte finish for maximum traction. Combined with larger journals, hardened gears and in some cases, dual drive, double redundant drive chains extend equipment uptime and life cycle.


  • Stronger construction means less downtime
  • Optional configurations 7,8,9,11,13 or more roll options to better suit your needs
  • Wide range of equipment to process .020 to over .600
  • AHSS | Dual Phase | Cold Rolled


Press Room Equipment Coil Straightener Lines

PRE’s PMS Power Straighteners represent a full line of motorized, variable speed straighteners. Designed for durability and ease of operation, they offer:

  • Variable speed drive
  • Pneumatically actuated pinch rolls
  • Independently adjustable upper straightening rolls
  • Various loop control options
  • Hardened and ground rolls

We also offer PRE’s Pull-Thru Straighteners.

Pre pms powered coil straightener
PRE PMS Powered Coil Straightener


Rapid-Air Power Straighteners

Rapid-Air high-performance powered coil straightener lines feature superior stock processing capabilities, simple operation, and the same rugged durability Rapid-Air products are famous for. Precision coil set removal is combined with smooth payout for material over a wide range of stock widths and thicknesses.

Features include:

  • Variable speed loop arm control or non-contact loop controls
  • Tilt open straighten head for easy roll cleaning
  • Small roll diameters with close spacing to optimize straightening of lighter duty coil stock.
  • Power to pull of non powered stock reels up to 1,500 pounds
  • Flat and wire stock models
Rapid-air power straighteners
Rapid-Air Power Straighteners

For more information, visit Rapid-Air’s coil straightener page.

Waddington Precision Stock Straighteners

Waddington precision stock straighteners feature modern design and ground components made from stress relieved steel to ensure precise alignment, allowing you to work the material beyond its yield point without imparting distortion into the strip because of machine deflection.

9, 11, 17, and 21 roll precision straighteners for handling all types of flat coil stock.

  • 6″-48″ width range
  • .005″ to .250″ thickness range

Series Available: LC, MD & SF

Waddington precision stock straightener
Waddington Precision Stock Straightener

Production Resources offers a full line of equipment to meet your coil handling and other pressroom needs. You may also be interested in:


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Production Resources Incorporated.  All Rights Reserved.
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