TufTorq Pneumatic Core Shafts

Made in the USA

COR-LOK LOGO / NEW TufTorq Pneumatic Core Shafts with PTV inflating valve

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Heavy Duty, High-Grip Core Shaft

CAC's NEW TufTorq pneumatic core shaft is now available. TufTorq's unique design provides higher torque for better core locking with zero core damage. TufTorq pneumatic core shafts utilize unique inflating tube to actuate the core shaft leaves for engagement inside the rolls core. These interlocking segments expand evenly around the circumference and across the width of the shaft, ensuring maximum torque transmission to the inside of your core with zero core damage. TufTorq's interlocking segment (leaf design) allows for easy insertion and removal accommodating the easiest and fastest possible roll changes.

CAC's standard TufTorq air shafts are supplied with thru bores. They may be mounted to any thru bar / shaft and locked in place with CAC's unique split bushing design. TufTorq air shafts can also be supplied with journals or CAC's unique, light-weight thru shaft.

  • Lightweight - easy to use
  • Interlocking segment (leaf) design is easy to slide in and out of cores for fast roll changes
  • Higher torque output to ensure your cores stay locked - no core slipping
  • Interlocking segment (leaf) design ensures zero core damage
  • Engineered inflating tube (bladderless)
  • Low maintenance - built to last
  • 1.5" to 18" Diameter cores
  • 3" to 120" Roll or core width
  • Steel tubing internal construction designed to support heavy weights, lightweight alumunum external components
  • Thru bore design (standard)
  • Lightweight thru shafts available - click here for more info
  • Core stop flange option
  • Standard designs and custom designs to fit your machine
  • Combine with CAC's unwind and rewind modules for a complete engineered solution
  • Made in the USA

Click filename to view Specification Sheets
Filename  Description
18503-393 TufTorq PTV air shaft with thru bore
18503-375 TufTorq PTV air chuck for 3 inch cores
18503-376 TufTorq PTV air chuck for 6 inch cores


Inside CAC's TufTorq Core Shaft

TufTorq air shaft dimensions
Core size
End cap,
valve end
End cap, plain end
2 1-15/16 2-3/32 Up to 3/4 3-72 7-76 2.25 1.75
3 2-15/16 *3-1/8 Up to 1-3/4 3-120 7-124 2.25 1.75
4 3-15/16 4-3/16 Up to 2-1/2 3-120 7-124 2.25 1.75
5 4-15/16 5-3/16 Up to 3 3-120 7-124 2.25 1.75
6 5-15/16 6-3/16 Up to 4 3-120 7-124 2.25 1.75
7 6-15/16 7-3/16 Up to 5 3-120 7-124 2.25 1.75
8 7-15/16 8-3/16 Up to 6 3-120 7-124 2.25 1.75
9 8-15/16 9-3/16 Up to 7 3-120 7-124 2.25 1.75
10 9-15/16 10-3/16 Up to 8 3-120 7-124 2.25 1.75
11 10-15/16 11-3/16 Up to 9 3-120 7-124 2.25 1.75
12 11-15/16 12-3/16 Up to 10 3-120 7-124 2.25 1.75


  • All dimensions in inches. Thru bores machined .010”-.015” oversized unless otherwise specified.
  • Custom and metric core sizes available, please contact us at (800) 433-2413 or sales@converteraccessory.com for more information.

*3-3/16” inflated diameter is attainable with leaf and retainer design (only). Contact us for more information.


CAC's Lightweight Thru Shaft

Lighten your load with our lightweight thru shaft. CAC’s thru shaft is manufactured from hallowed tubular steel and offers a light weight solution with a lot of beam strength for heavy rolls of material. It is a very attractive way to provide a much lighter core support solution. Beam strength primarily is from the outside diameter, the small amount of stiffness lost with the hallowed design is well worth the benefits. We offer solid steel ends to fit your needs.

Couple our lightweight thru shaft with our core support products to achieve a complete solution. Customize your solution by using our end plug and air shaft, or ShaftLok™ safety chucks. Increase productivity and reduce employee injury with this effective, low cost option.

Contact us today so we can discuss how we can provide a solution for your specific needs.

Click filename to view Specification Sheets
Filename  Description
18503-373 Steel Thru Shaft
18503-374 Lightweight Thru Shaft

CAC COR-LOK® Air Shafts and Air Chucks are manufactured under U.S. Patent Numbers: 3825167, 3917187, 3937412, 4124173 AND 4944468
Converter Accessory Corporation
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