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

Custom Collets, Top Jaws & Locators from Skill-Craft Company Inc.

Collets & Locators
Collets & Locators

Collets, Top Jaws & Locators
Collets, Top Jaws & Locators

Well known in the machine tool industry, workholding fixtures are one of the most perishable items. Workholding collets, chuck jaws, and other perishable tooling components is what Skill-Craft is all about. SC manufactures high quality, close tolerance replacement tooling for all brand name workholding fixtures.

All major brand producers of workholding equipment supply replacement components for their tooling; however, it is not always convenient for them to do so on a timely, cost conscious basis. SC is dedicated to meeting the needs of those manufacturers who require quality tooling that is competitively priced and delivered in a timely fashion.

Skill Craft was founded on solely producing workholding replacement parts. With our unwavering dedication to specialization, the customer is the ultimate recipient. You will find SC does it better: better quality, better price, better delivery. When comparing finished products with OEM duplicates, many customers think SC parts look better as well.

Collets allow for the highest level of concentricity and repeatability

Collets come pre-loaded in order to ensure proper release after machining is complete

Let skill-craft quote your collets, top jaws or other replacement components. - We also design specialized workholding products tailored to your specific needs

Click here to upload your blueprints for a quote today

Tolerances guaranteed to be within OEM specs or better.

Custom Collets, Top Jaws & Locator Examples & Information

Bubble Collet
Bubble Collet
Bubble Collet
  • Ideal for chucking O.D. of part in two places
  • Split from one end and allows for chucking in two places simultaneously
Single Tapered Collet
Single Tapered Collet
Single Tapered Collet
  • Ideal for chucking on O.D. or I.D. of part
  • Allows for chucking on narrower chucking lands
  • Does not accommodate tapered chucking surfaces
  • Split from one end or split from both ends
  • Part does not have to be inside entire chucking land
  • Threaded on one end to attach to piston or draw bar
Double Tapered Collet
Double Tapered Collet
Double Tapered Collet
  • Ideal for chucking O.D. or I.D. of part in two places
  • Allows for chucking on tapered parts or where the bore is not perfectly straight
  • Split from each end allowing for opposite sides to be independent of each other
  • Extra rigidity by chucking on two locations of a part
Custom Wheel Chuck
Custom Wheel Chuck
Custom Wheel Chuck
This chuck was designed to balance various sized wheels. We had to have .4 inches per side travel along with a chuck to hold 3 different sizes.
Spline Locator
Spline Locator
Spline Locator
  • Spline locators help orientate part and allow for no slipping while part is being held
  • Helps centralize part prior to chucking
Flatted Collet
Flatted Collet
Flatted Collet
  • Chucks on I.D. of a part
  • Ensures highest gripping force with precision ground flats
  • Collets are pre-loaded to eliminate "sticking" of the collet
Spline Collet
Spline Collet
Spline Collet
  • Used for turning, grinding, inspection
  • Chuck on the major diameter, minor diameter or pitch diameter
  • Precision ground tapers concentric within .0001 to the major, minor or pitch diameters
  • Useful in gear manufacturing or gear testing equipment
Split-Collet - Segmented Collets
Split-Collet - Segmented Collets
Split-Collet - Segmented Collets
  • Allows for extreme load conditions
  • Very high load rooms capable - .125 or more
  • Collets can be made at very high Rockwell making collet last longer
  • If retaining ring breaks, real easy fix by ordering a new one
Square Collets
  • Can be incorporated into I.D. of collet to chuck on a square part
  • Easily configurable to any shape part
Hex Collets
  • Can be incorporated into I.D. of collet to chuck on a hexagon part
  • Easily configurable to any shape part
  • .0002 or better
Step Collets
Chucking on the O.D. of a part
  • Allows chucking on extreme diameters without making body large
  • Allows for chucking a larger piece using a small chuck or spindle
  • TIR .0002 or better


Chucking on the I.D. of a part
  • Has multiple "steps" in the collet to chuck various sizes of parts using same collet
  • Cannot chuck (2) diameters at same time
  • No collet change; collet can accommodate multiple parts
  • TIR .0002 or better
Mandrel Collets
  • O.D. of collet ground precisely to part size in order to assure process accuracy
  • Collets range from 0.500 - 4.467
  • 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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