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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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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.
Deluxe Mill Column – CNC Ready
Multi-Direction Mill Column – Manual
Multi-Direction Mill Column – DRO
Multi-Direction Mill Column – CNC Ready
NexGen Mill Column – Manual
NexGen Mill Column – DRO
NexGen Mill Column – CNC Ready
8-direction Benchtop Mill Column Upgrade
Rigid Column Base – Round
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:
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:
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!
Headstock Riser Block Set
The standard Sherline lathe can accommodate parts up to 3.5" (90 mm) in diameter. However, there are times when you may need to work on larger pieces. The Sherline headstock spacer block increases the lathe’s maximum working diameter to 6" (152 mm), significantly expanding its capabilities.
This set includes a 1.235" (31.37 mm) spacer block that fits beneath the headstock, along with a riser-rocker tool post to elevate the cutting tool accordingly. If you plan to turn parts between centers while using the headstock riser, you’ll also need a tailstock riser block to maintain proper alignment.
Note: Although the spacer block allows turning parts up to 6" in diameter, the lathe’s motor power remains unchanged. This accessory is best suited for machining easy-to-cut materials or for occasional use when extra clearance is needed. If your work frequently requires this added capacity, upgrading to a larger lathe may be advisable.
Tailstock Riser Block
Steady Rest
All materials tend to deflect away from the cutting tool when you are turning them on a lathe. This tendency is especially noticeable on long, slender parts and long pieces of bar stock, which makes it quite difficult to hold close tolerances. The best way to support a long section is with a center mounted in the tailstock. However, for one reason or another, this is not always possible. As an example, it may be a piece of stock that you want to center drill so that you can mount it between centers, or it may be a part where a center drill hole would ruin the looks of the piece. Whatever the reason, a steady rest provides a means of supporting the piece while it turns.
The Sherline steady rest has three adjustable brass blades mounted in a holder that mounts on the bed of the lathe. These blades can be adjusted to the diameter of the part to provide the necessary support. Another advantage of the steady rest that is often overlooked is the fact that work held in position by the rest turns concentrically with its outside diameter. This means that concentricity is assured when working near the steady rest, because, at that point, it must be running perfectly true despite imperfections in how it is chucked or centered at either end. The Sherline steady rest will accommodate any size part, up to 1.75" (44mm) in diameter.
A steady rest riser block is available, which makes it possible to use the steady rest on the lathe with the headstock and tailstock riser blocks in place.
