Skill-Craft Company Inc.
Serving the Workholding Industry Since 1952

Custom Flat-Lok Expanding Mandrels from Skill-Craft Company Inc.

Flat-Lok Expanding Mandrels
Flat-Lok Expanding Mandrels

Flat-Lok expanding mandrels offer high stability by using precisely ground flats on collet, draw screw and body. If slipping occurs, collet rides up on flats causing increased gripping pressure. Maintains accuracy of .0005 or better and orientation of flats on assembly does not affect concentricity.

Built in safety stop provides long lasting collet functionality and self-releasing collets pre-loaded assuring easy part removal.

Collets are ground specifically to part size, assembly specs can be altered in order to fit custom products. Standard and customizable adaptor plates available to accommodate any machine spindle mount. Actuation can be done by drawbar on machine or by standard and customizable air cylinders. Pull-back allows for proper seating against part-stop.

Standard Flat-Lok Expanding Mandrels & Collets

-Do our standard specs not fit your current application or part? Upload your part and give a brief description of the application and let Skill-Craft give you a proposal in order to accommodate your needs.

-Each arbor is easily configurable as well as the collet.

-Let Skill-Craft know what dimensions you would like changed and we will produce a quality chuck to accommodate you.

Standard Series Flat-Lok Expanding Mandrels
Standard Series Flat-Lok Expanding Mandrels
Standard Series Flat-Lok Expanding Mandrels
Flat-Lok Expanding Mandrels

Stability
• Precisely ground flats on collet, draw screw and body
• If slipping occurs, collet rides up on flats causing increased gripping pressure

Accuracy
• Maintains accuracy of .0005 or better
• Orientation of flats on assembly does not affect concentricity

Long Lasting
• Built in safety stop provides long lasting collet functionality

Self-Releasing
• Collets pre-loaded assuring easy part removal

Adaptability
• Collets ground specifically to part size
• Assembly specs can be altered in order to fit custom products
• Standard and customizable adaptor plates available to accommodate any machine spindle mount
• Actuation can be done by drawbar on machine or by standard and customizable air cylinders

Pull-Back
• Allows for proper seating against part-stop


Short Series Flat-Lok Expanding Mandrels
Short Series Flat-Lok Expanding Mandrels
Short Series Flat-Lok Expanding Mandrels
Flat-Lok Expanding Mandrels

Stability
• Precisely ground flats on collet, draw screw and body
• If slipping occurs, collet rides up on flats causing increased gripping pressure

Accuracy
• Maintains accuracy of .0005 or better
• Orientation of flats on assembly does not affect concentricity

Long Lasting
• Built in safety stop provides long lasting collet functionality

Self-Releasing
• Collets pre-loaded assuring easy part removal

Adaptability
• Collets ground specifically to part size
• Assembly specs can be altered in order to fit custom products
• Standard and customizable adaptor plates available to accommodate any machine spindle mount
• Actuation can be done by drawbar on machine or by standard and customizable air cylinders

Pull-Back
• Allows for proper seating against part-stop
Standard Series Flat-Lok Expanding Collets
Standard Series Flat-Lok Expanding Collets
Standard Series Flat-Lok Expanding Collets
• O.D. of collet ground precisely to part size in order to assure process accuracy
• Precision ground inclined flats on collet taper
• Flats ensure highest possible chucking pressure
• High grade steel for long lasting durability
• Interchangeable with flatted arbor assemblies in industry
• Silicon sealing of slots available upon request
• Orientation of collet on arbor does not affect accuracy of assembly
• Multiple O.D. configurations available to hold the most unique applications
Short Series Flat-Lok Expanding Collets
Short Series Flat-Lok Expanding Collets
Short Series Flat-Lok Expanding Collets
• O.D. of collet ground precisely to part size in order to assure process accuracy
• Precision ground inclined flats on collet taper
• Flats ensure highest possible chucking pressure
• High grade steel for long lasting durability
• Interchangeable with flatted arbor assemblies in industry
• Silicon sealing of slots available upon request
• Orientation of collet on arbor does not affect accuracy of assembly
• Multiple O.D. configurations available to hold the most unique applications
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