Shaft Support Systems

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Pinch point free shaft locking system for Unwind and Rewind stations

ShaftLok™ safety chucks are the perfect answer for safely handling and mounting unwind and rewind shafts. ShaftLok's unique axially sliding capture plate ensures safe shaft holding with no pinch points.

CAC currently has several models available for your application: Standard, Medium or Heavy Duty. Our safety chucks open only in the up position allowing a safe, easy unload operation and automatically lock to hold rotating shafts. Replaceable shaft cradles and inserts are available for square, diamond, triangle, 1/2 round, round and custom shaped shafts and shaft ends as well as custom drive extensions.

ShaftLok™ safety chucks operate flawlessly and are perfect for low to high speed applications. Available in several models able to handle loads and roll weights up to 10,000 lbs, these extra heavy duty steel constructed chucks also include heavy duty ball bearings.

Unlike conventional safety chucks, the unique design of the CAC ShaftLok™ safety chuck provides a no pinch point shaft locking device that offers a level of worker safety unequalled by any other shaft locking system.

Competitively priced with OEM and quantity discounts available. Contact us today for more information.

  • Skew and / or lateral adjustment models available
  • Foot or flange mounting available
  • Standard models combine with CAC brakes for total unwind answers
  • Custom designs to combine with the brake, clutch or drive of your choice and CAC's COR-LOK® air shafts

Standard Duty Safety Chuck

Closed Position

Standard Duty Safety Chuck

Open Position






Click filename to view Specification Sheets
Filename ShaftLok™ Standard Duty Safety Chucks
18503-325 ShaftLok™ Standard Duty Safety Chuck idle - 1000 lb. roll weight
18503-326 ShaftLok™ Standard Duty Safety Chuck idle flange mount - 1000 lb. roll weight
18503-323 ShaftLok™ Standard Duty Safety Chuck drive / brake - 1000 lb. roll weight
18503-324 ShaftLok™ Standard Duty Safety Chuck drive / brake flange mount - 1000 lb. roll weight

Click filename to view Specification Sheets
FilenameShaftLok™ Medium Duty Safety Chucks
18503-329 ShaftLok™ Medium Duty Safety Chuck idle - 3000 lb roll weight
18503-330 ShaftLok™ Medium Duty Safety Chuck idle flange mount - 3000 lb. roll weight
18503-327 ShaftLok™ Medium Duty Safety Chuck drive/brake mount - 3000 lb roll weight
18503-328 ShaftLok™ Medium Duty Safety Chuck drive/brake flange mount - 3000 lb roll weight

Click filename to view Specification Sheets
FilenameShaftLok™ Heavy Duty Safety Chucks
18503-333 ShaftLok™ Heavy Duty Safety Chuck idle - 10,000 lb roll weight
18503-334 ShaftLok™ Heavy Duty Safety Chuck idle flange mount - 10,000 lb roll weight
18503-331 ShaftLok™ Heavy Duty Safety Chuck drive/brake - 10,000 lb roll weight
18503-332 ShaftLok™ Heavy Duty Safety Chuck drive/brake flange mount - 10,000 lb roll weight



ShaftLok™ Safety Chuck Insert Shapes

Safety Chuck Inserts
CAC Converter Accessory Corporation
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