Inside COR-LOK® air shafts and chucks Air shaft dimensions
Air chuck dimensions Valve options
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Air Shafts & Chucks
 The Field-Proven Concept in Core Locking

Use COR-LOK® air shafts and chucks for positive locking without core damage and virtually maintenance-free operation. These unique air shafts and chucks employ a totally new inflating and gripping principle for greater gripping pressure and improved core contact.

The COR-LOK® design utilizes a single, small diameter tube spirally wound around the shaft body. When inflated, the tubing provides even, controlled expansion for the aluminum leaves and full surface engagement with the core I.D. - locking it securely to the shaft.

COR-LOK® air shafts are available in 1" to 18" diameters. Special, fractional and metric core sizes available.

Call for more specifications.

 COR-LOK® air shaft and chucks
Click here to view air chuck specifications
COR-LOK®
3" COR-LOK® air chucks/shafts		 6” COR-LOK® air shaft
6" COR-LOK® air shaft		 internal view of COR-LOK® air shaft and chuck
Internal view

18503-37 COR-LOK® Air Shaft with thru bore
18503-38 COR-LOK® Air Shaft with Journals or Thru Shaft
18503-86 COR-LOK® Shaft for Cantilevered Mounting
Features:
  • Minimum down-time.
  • Very low maintenance.
  • Lightweight - saves employee fatigue.
  • Easy to slide in and out of cores for fast operation.
  • High torque output to ensure your cores stay locked in place.
  • Zero core damage with use of interlocking segment (leaf) design.
  • Rubber tubing size is standard on all size chucks.
  • Positive locking over the full core length.
  • Greater gripping pressure.
  • No core damage due to reaming ... less down-time for roll changes.
  • Minimum down-time ... standardized rubber tubing available from any local source ...easily attached to air valve ... can be replaced in minutes.
  • Requires only 70-120 psi input to fully inflate.
  • Available in aluminum (standard), steel, stainless steel and carbon fiber construction
  • Air shafts and chucks are available with thru bores (standard), thru shafts and journals.
  • Standard and custom configurations to suit your needs.
  • Easily combined with CAC's shaft holders and safety chucks for complete unwind station upgrades.
  • Made in the USA





Inside CAC's COR-LOK® Air Shafts & Chucks

COR-LOK® air shaft dimensions
To fit core size A
Deflated
diameter		 B
Inflated
diameter		 C
Bore range		 D
Expanding length		 E
Over all length		 F
End cap,
plain end		 G
End cap, valve
end (PTV valve)		 H
End cap, valve
end (Schrader valve)
1” 31/32” 1-3/32” N/A 3” - 30” N/A  1”  N/A  1” 
1-1/2” 1-15/16” 1-19/32” N/A 3” - 30” N/A  1”  N/A  1” 
2” 1-31/32” 2-3/32” Up to 1” 3” - 72” 5” - 74”  1”   1.5”   1” 
3” 2-15/16” 3-3/16” Up to 1.75” 3” - 120” 5” - 122”  1”   1.5”   1” 
4” 3-15/16” 4-3/16” Up to 3” 3” - 120” 5” - 122”  1”   1.5”   1” 
5” 4-15/16” 5-3/16” Up to 4” 3” - 120” 5” - 122”  1”   1.5”   1” 
6” 5-15/16” 6-3/16” Up to 4” 3” - 120” 5” - 122”  1”   1.5”   1” 
6.75” 6-11/16” 6-7/8” Up to 4” 3” - 120” 5” - 122”  1”   1.5”   1” 
7” 6-15/16” 7-3/16” Up to 5” 3” - 120” 5” - 122”  1”   1.5”   1” 
8” 7-15/16” 8-3/16” Up to 6” 3” - 120” 5” - 122”  1”   1.5”   1” 
9” 8-15/16” 9-3/16” Up to 7” 3” - 120” 5” - 122”  1”   1.5”   1” 
10” 9-15/16” 10-3/16” Up to 8” 3” - 120” 5” - 122”  1”   1.5”   1” 
11” 10-15/16” 11-3/16” Up to 9” 3” - 120” 5” - 122”  1”   1.5”   1” 
12” 11-15/16” 12-3/16” Up to 10” 3” - 120” 5” - 122”  1”   1.5”   1” 
NOTE: Thru bores machined .010” - .015” oversized unless otherwise specified.
NOTE: COR-LOK air shafts are available for non-standard and metric core sizes.
Please contact us at 800-433-2413 or e-mail us at cac@epix.net
for more information on non-standard and metric core diameters.




COR-LOK® air chuck with Schrader valve
COR-LOK® air chuck with PTV valve
Air chuck with Schrader valve Air chuck with PTV valve

COR-LOK® air chuck dimensions
To fit core size: A
Deflated
Dia.		 B
Inflated
Dia.		 C
Bore range
O.D.		 D
Expanding length		 E1
Overall
length		 E2
Overall
length		 F1
End cap,
valve end		 F2
End cap,
valve end		 G
End cap,
plain end		 Approx. Weight
3” 2 15/16” 3 3/16” Up to 1.75”  5”   7”   7.5”  1” 1.5” 1” 2 lbs
4” 3 15/16” 4 3/16” Up to 3”  5”   7”   7.5”  1” 1.5” 1” 2-1/2 lbs
5” 4 15/16” 5 3/16” Up to 4”  5”   7”   7.5”  1” 1.5” 1” 3 lbs
6” 5 15/16” 6 3/16” Up to 4”  6”   8”   8.5”  1” 1.5” 1” 12-1/2 lbs
6.75” 6 11/16” 6 7/8” Up to 4”  6”   8”   8.5”  1” 1.5” 1” 13 lbs
7” 6 15/16” 7 3/16” Up to 5”  6”   8”   8.5”  1” 1.5” 1” 13 lbs
8” 7 15/16” 8 3/16” Up to 6”  6”   8”   8.5”  1” 1.5” 1” 15 lbs
9” 8 15/16” 9 3/16” Up to 7”  6”   8”   8.5”  1” 1.5” 1” 17 1/2 lbs
10” 9 15/16” 10 3/16” Up to 8”  7”   9”   9.5”  1” 1.5” 1” 22 lbs
11” 10 15/16” 11 3/16” Up to 9”  7”   9”   9.5”  1” 1.5” 1” 25 lbs
12” 11 15/16” 12 3/16” Up to 10”  7”   9”   9.5”  1” 1.5” 1” 27 lbs
Note: Thru bores machines .010” - .015” oversized unless otherwise specified.

Valve Options

COR-LOK® air shaft and chuck valve options
CAC COR-LOK® Air Shafts and Air Chucks are manufactured under U.S. Patent Numbers: 3825167, 3917187, 3937412, 4124173 AND 4944468