Cantilevered COR-LOK Air Shaft

Made in the USA

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COR-LOK® Air Shaft for Cantilevered Mounting

Cantilevered COR-LOK Air Shaft

COR-LOK® cantilevered air shafts are different. Their unique design provides high-torque core locking with zero core damage. COR-LOK B2 series air shafts utilize inflating tube engineered to fit the COR-LOK spiral internal housing. Inflating the air shafts with pressurized air will actuate COR-LOK’s interlocking segments to engage the core and lock it in place. These interlocking segments expand evenly around the circumference and across the width of the core, ensuring even torque distribution in the core’s inside diameter. This means your cores will not slip and will not distort during the unwind/rewind process.

COR-LOK cantilevered air shaft bodies are supplied with thru bores, mounted to a thru shaft, locked in place with CAC’s unique split bushing design. Custom designs are available, designed to fit your machine.

Features and Benefits:

  • Thru shaft design uses CAC’s standard thru bore air shaft
  • Journals designed for minimum deflection, low inertia
  • Interlocking segment (leaf) design ensures rolls slide on and off easily for fast roll changes
  • High torque output to ensure your cores stay locked - no core slipping
  • Interlocking segment (leaf) design ensures zero core damage
  • Engineered inflating tube (bladderless)
  • Built to last
  • Made in the USA
  • 2” - 18” Diameter cores
  • 3” - 60” Roll or core width
  • Aluminum (standard), steel, stainless steel and carbon fiber construction
  • Designed to fit your cantilevered unwind or rewind stand


  • Core stop flange
  • Steel construction for heavy duty loads (aluminum construction standard)
  • Carbon fiber construction
  • Inflating tool
  • Custom engineered journals with specialized machines
  • Combine with CACs unwind and rewind stands
  • Special and metric core sizes

Cantilevered COR-LOK Air shafts

  A B C
Core size
2 1-31/32 2-3/32 3-40
3 2-15/16 3-1/8 3-48
4 3-15/16 4-3/16 3-60
6 5-15/16 6-3/16 3-60
6 3/4 6-11/16 6-7/8 3-60
7 6-15/16 7-3/16 3-60
8 7-15/16 8-3/16 3-60
9 8-15/16 9-3/16 3-60
10 9-15/16 10-3/16 3-60
11 10-15/16 11-3/16 3-60
12 11-15/16 12-3/16 3-60
1) All dimensions in inches.
2) Custom and metric core sizes available, please contact us at
(800) 433-2413 or for more information.

Click filename to view Specification Sheets
Filename  Description
18503-86 COR-LOK® Air Shaft for cantilevered mounting
Tech tip: Do you use cantilevered unwind and rewind shafts in your operation?

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