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When making a decision about the core support system best suited for your application, keep in mind the simplicity of design of these chucks which assures reliable operation and economy.

Unlike the core cones, the chucks are supplied with the same split bushing design used in our COR-LOK® Air Chucks and Shafts, preventing possible damage to the thru shaft.

These chucks do not require any compressed air to operate. They engage and lock the core without tools or any external operation by the machine operator. When your roll starts to rotate, these chucks automatically engage your core and lock it in place.

COR-LOK® mechanical chucks are an excellent answer where heavy duty, high torque core support is required. They work equally well for light duty applications. They are available in aluminum and steel.

Ease of installation provides another reason for choosing this solution to core support problems. Simply slip the chuck onto the thru shaft, clamp split bushing to shaft with the set screws provided, load the core and you're ready to run.

Mechanical Chuck

Features and Benefits:

  • Available in 2" to 12" diameter
  • Various body lengths available to accommodate heavier rolls longer cores
  • Standard model manufactured in aluminum
  • Heavy duty models manufactured in steel
  • Maintenance free
  • Load sensitive - the greater the load the greater the gripping
  • Backed by CAC's over 44 years of experience designing and manufacturing Mechanical Chucks.

CAC Mechanical Chucks

COR-LOK® mechanical chuck dimensions
To fit core size A
Bore range
Locking face
Over all length
End cap
2” 2.023” 2.122” Up to 1” 3.250” 3.750” .250”
3” 3.022” 3.122” Up to 1.75” 3.250” 3.750” .250”
4” 4.033” 4.122” Up to 3” 3.250” 3.750” .250”
5” 5.014” 5.122” Up to 4” 3.250” 6.500” .250”
6” 6.015” 6.239” Up to 4” 5.000” 6.500” .750”
6 -3/4” 6.779” 6.896” Up to 4” 5.000” 6.500” .750”
7” 7.029” 7.146” Up to 5” 5.000” 6.500” .750”
8” 8.029” 8.146” Up to 6” 5.000” 6.500” .750”
9” 9.029” 9.146” Up to 7” 5.000” 6.500” .750”
10” 10.029” 10.146” Up to 8” 5.000” 6.500” .750”
11” 11.029” 11.146” Up to 9” 5.000” 6.500” .750”
12” 12.029” 12.146” Up to 10” 5.000” 6.500” .750”
NOTE: Thru bores machined .010” - .015” oversized unless otherwise specified.
NOTE: COR-LOK mechanical shafts are available with custom locking face lengths.
Diameters for non-standard and metric core sizes are available
Please contact us at 800-433-2413 or e-mail
for more information on custom locking face lengths and non-standard and metric core diameters.

CAC Mechanical Chucks
Need more Information?

Click filename to view Specification Sheets
Filename  Description
18503-78 2" COR-LOK® Mechanical Core Chuck
18503-18 3" COR-LOK® Mechanical Core Chuck
18503-363" COR-LOK® Mechanical Core Chuck with 3" Overall Length
18503-65 4" COR-LOK® Mechanical Core Chuck with 4 1/2" Overall Length
18503-436" COR-LOK® Mechanical Core Chuck
Tech tip: How do I decide what roll handling equipment is best for me?

Check out our other Core Support Systems solutions
Air shafts and chucks Aluminum core cones

Air shaft with lateral adjust Mechanical shafts and chucks

Air shaft with self contained inflating valve COR-LOK® Core Adapters

COR-LOK® end and center plugs COR-LOK® XE series pneumatic chucks

Air chuck standard dimensions Air shaft standard dimensions

Air shafts and chucks support center Air Chucks and Core Cones In Stock

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Application story featuring our COR-LOK® and Fox TrimAway® System

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Converter Accessory Corporation
201 Alpha Road
PO Box 188
Wind Gap PA 18091-0188

Phone (800) 433-2413 -(610) 863-6008
Fax (800) 709-1007 - 610) 863-7818

What is Web Handling?
Web Handling is the science, engineering and equipment necessary to successfully transport a continuous flexible material through various processes without defect. Enhancing Web Handling with proper equipment will ensure materials are processed at their maximum efficiency, allowing the process to generate maximum profits.

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