3.1″ ER-16 3-Jaw Chuck
2.5″ 4-Jaw Chucks – Various Thread
2.5″ 4-Jaw Independent Chucks – Various Thread
Top Jaws for Extended Laser Pin Chuck Jaws
These extended pin jaws are specifically designed for laser marking operations that require holding parts with outer diameters up to 6" (153 mm) and inner diameters as small as 0.66" (16.7 mm), using Sherline 3-jaw chucks manufactured after 2014*. Each top jaw features four holes for 3/16" hard-steel dowel pins (not included) and mounts to the master jaws using a socket head cap screw (not included).
These jaws are intended for light-duty holding only and are not suitable for machining or any application requiring more than finger-tight clamping force. They are ideal for securely holding round parts—either internally or externally—during laser marking.
Compatible with all Sherline 3-jaw chucks.
*NOTE: Chucks manufactured before 2014 require custom fitting of each jaw. You may either send your chuck to Sherline for modification or measure the width of each jaw (A, B, and C) using micrometers and submit the measurements for proper fitting.
3.1″ 4-Jaw Chuck with Pie Jaws
3.1″ 4-Jaw Chuck – ER-16
3.1″ 4-Jaw Independent Chuck – ER-16 Thread
3/8″ Drill Chuck with #1 Morse Arbor
5/32″ 0JT Chuck with #0 Morse adjustable back
5C 3″ 4-Jaw Independent Chuck
Note: 5C collets are commonly used with full-size machines. This chuck is designed for use on full-size equipment, like those in our shop, and is not compatible with Sherline lathes.
5C 4″ 4-Jaw Independent Chuck
Chuck Adapters for Rotary Table
About the Rotary Table Chuck Adapters You can attach a 1/4″ or 3/8″ drill chuck, an older Unimat chuck with 12 x 1 mm or 14 x 1 mm threads, or a 1/2-20 Sears chuck to your Sherline rotary table. … Continued
Individual WW Collets
Collets offer a fast and accurate way to mount cylindrical parts or bar stock in a lathe. Each collet functions like a miniature precision 3-jaw chuck and fits into a tapered adapter mounted in the headstock. A drawbar passes through the headstock and threads into the rear of the collet, pulling it into the adapter. This action causes the collet jaws to close and securely grip the workpiece. Collets are known for their exceptional centering accuracy, but each collet size accommodates only a limited diameter range—typically ±.001" (0.02 mm).
WW Collets vs. Milling Collets
Unlike milling collets, WW collets feature a through-hole, allowing material to pass completely through both the collet and drawbar. The maximum diameter stock that can pass through is 3/16" (4.5 mm), although WW collets are available in sizes up to 5/16" (8.0 mm). Collets larger than the through-hole capacity are sometimes referred to as “pot chucks,” as they are only bored to a depth of approximately .260".
Collet Accuracy
Sherline WW collets are precision-made and have a maximum runout of .002" or less. When the WW collet adapter is properly trued as recommended in the instructions, runout is minimized, providing optimal accuracy. Pot chucks (collets larger than 3/16" or 4.5 mm) are not bored through and may exhibit increased runout if your part extends far beyond the front of the collet.
Logical Part Numbering
Sherline collets are organized by size for easy identification:
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Inch Collets: Part numbers begin with 1160, followed by two digits representing the size in 64ths of an inch.
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Example: P/N 116013 is 13/64"; P/N 116016 is 1/4" (16/64").
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Metric Collets: Part numbers begin with 1178, followed by two digits representing the size in 0.1 mm increments.
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Example: P/N 117813 is 1.3 mm.
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Compatibility and Specifications
Sherline WW collets are manufactured in-house to standard WW specifications but are not hardened. The shank diameter is .312–.313", and the thread is .275-40. While some third-party WW collets may not fit properly, Sherline offers an optional .315" adapter and drawbar set (P/N 1163) to accommodate select 8 mm collets from other manufacturers.
Available Sizes
Sherline WW collets are offered in:
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Inch sizes from 1/64" to 5/16", in 64th-inch increments.
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Metric sizes from 0.3 mm to 8.0 mm, in 0.1 mm increments.
Special inch sizes up to .320" can be custom ordered with approximately a 3-week lead time. Please contact us for details.
Quck Order
If you are ordering a lot of different size collets please use the quick order table below to make it easier!
Mill Collet Set
Sherline milling collets are specifically designed for use with the Morse #1 internal taper, which is standard on both the Sherline lathe and vertical mill. Due to the shallow angle of the Morse #1 taper, tightening the drawbolt results in significantly greater clamping force compared to WW collets. For this reason, we recommend using these milling collets to securely hold miniature end mills (with 3/16" or 1/4" shanks), #1 and smaller center drills, Dremel® bits (1/8" shank), and a variety of other small cutters.
Inch Mill Collet Set: 1/8", 3/16", 1/4"
Metric Mill Collet Set: 3 mm, 4 mm, 6 mm
Note: Tools held in these collets must have a shank diameter within .001" of the stated size. Because of the shallow taper, the collet will remain tight in the spindle even after loosening the drawbolt. To release it, back the drawbolt out a few turns and tap it lightly to free the collet.
⚠️ CAUTION: When tightening the collet drawbolt with a Tommy bar, be careful not to insert the bar too far into the spindle. Doing so can damage the collet’s taper area. The red arrow in the image below shows an example of this type of damage.
