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Nova G3 Comet II Reversible Chuck

Item #
92% of 100
The Nova G3 Comet II Chuck features a locking set screw that allows it to be used safely in reverse mode without the risk of unthreading. It is designed for the Nova Comet II Midi Lathe (#46457, sold separately), but can be used on any lathe with a 1" 8-TPI RH thread. When used on non-reversing lathes, the set screw must be removed. Like the similar Nova G3, this chuck is a four-jaw, self-centering scroll chuck with a high-powered TuffLock™ grip for incredibly solid, vibration free performance. The single-handed operation means more time turning and less time setting up. It has less weight, and less overhang than the larger chucks—perfect for the Comet II lathe. The minimal 1.79" body length maximizes your distance between centers, and reduces stress on the spindle. Includes a set of 2" (50mm) jaws.


  • Designed for the Nova Comet II Midi Lathe (#46457, sold separately).
  • Locking set screw lets you use the chuck in reverse mode. If your lathe does not have a reversing spindle, the set screw must be removed.
  • Set screw can be removed to be compatible with the Jet 1221VS. (Note: Not recommended for reversing)
  • 1" 8-TPI RH threading-fits the Comet II Midi Lathe.
  • Up to 400mm/16" diameter swing capacity.
  • Up to 350mm/14" diameter bowls using 50mm/2" Jaws (supplied with chuck).
  • Up to 50mm/2" length spigots (using 50mm/2" Jaws (supplied with chuck).
  • Full packaged weight is (std) 1.4 kgs/3.1 lbs.
  • Locking screw allows the chuck to be used while the lathe is running in reverse mode.
  • Small, compact design minimizes load on small spindles and bearings.
  • Open back for easy cleaning.
  • Precise, powerful hardened gear action with Tuff Lock® technology.
  • Single-handed operation with included chuck key.
  • Able to take all Nova accessory jaws. However, please note: the larger accessory jaws in the Nova line are not recommended for use on the Nova G3 Comet II Chuck. For more information, see the offers for individual jaw sets.
  • All Nova chucks are four-jaw, self centering scroll chucks for fast, secure setups.
  • The four jaw design firmly grips both round and square wood.
  • Quality materials.
  • Precision machined in one operation from a solid steel block for optimal accuracy.
  • Polished self metal finish to allow for closer tolerances and accuracy.
  • Common accessory jaw fixing profile — compatible across all Nova chucks and accessories.
  • Jaw slides made from high-tech copper fused steel for maximum hardness, wear, and self-lubricating properties.
  • Special woodturning dovetail profile on jaws.
  • Auto safety stop feature—jaw slides can't protrude past the chuck body.
  • Comprehensive instructions.
  • Safe Lock™ Woodworm screw included for fast mounting of rough timbers.
  • 2-Year Warranty.
(1) Nova G3 Comet II Reversible Chuck
(1) Set of 50mm/2" jaws
(1) Safe Lock™ Woodworm screw
(1) Instruction Manual
(1) T-bar chuck key
More Information
Brand Nova
Manufacturer Part Number 48232
Weight 4.1500
4.6 / 5.0
112 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Nova 3 Chuck
An excellent and well-made chuck, good for most turning applications. Very good selection of accessory jaws and well used in our shop.
March 29, 2020
over 3 years ago
Woodworking Experience:
Great Chuck
A great chuck for turning. Easy screw on the Jet 1221 wood lathe.
March 18, 2020
2 months ago
Nothing not to like! Fits on Jet mini lathe, no adapter, works great.
February 16, 2020
2 months ago
Woodworking Experience:
An essential tool for turning.
February 13, 2020
3 months ago
Woodworking Experience:
Great product, exceeds my expectations.
February 5, 2020
2 months ago
Good quality
February 1, 2020
5 months ago
Woodworking Experience:
Great chuck awesome
January 5, 2020
3 months ago
Woodworking Experience:
nova g3 chuck
great chuck well made and works great with my new nova wood lathe
December 29, 2019
4 months ago
Woodworking Experience:
Nova G3
This is my third Nova G3 product.
December 28, 2019
4 months ago
Woodworking Experience:
Easy to use and works great!
I've wanted a chuck for years, but since I do so little with my lathe, I just have never gotten one... until now. When it went on sale just before Christmas, I ordered one. But my wife hid it and wouldn't let me have it until Christmas! ;-) So today I finally got to use it and I'm very pleased and impressed. It appears to be a precision instrument and works as advertised. I've now used it and have total confidence in it.
December 26, 2019
4 months ago
Woodworking Experience:
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Browse 37 questions Browse 37 questions and 119 answers
Why did you choose this?
Rockler Store
Your customer service staff was great and made these recommendations to me
Carol C on Feb 13, 2020
Good lathe chuck
Robert T on Dec 14, 2019
Your customer service staff was great and made these recommendations to me
Carol C on Feb 13, 2020
Got Shopsmith lathe working. Need to upgrade accessories
Gary C on Jan 13, 2020
Good lathe chuck
Robert T on Dec 14, 2019
It was a good price.
William W on Dec 2, 2019
It got good reviews. People who bought one said it would hold well and many jaws are available for it.
Leon T on Dec 1, 2019
Just bought a new lathe and I need accessories
John B on Dec 1, 2019
Good price on a chuck that had good reviews and worked well with my lathe.
Jim J on Dec 1, 2019
This will be my 2nd G3 chuck, the says it all.
MOB49 on Nov 29, 2019
Recommended by a woodturning friend.
Molly M on Nov 29, 2019
I've wanted one for a long time and the sale price tempted me enough to jump on it... besides, now my wife has something to put under the tree for me!
TGinAZ on Nov 29, 2019
for turning on lathe
Robert W M on Nov 29, 2019
on sale
chris on Nov 29, 2019
Husband said he wanted it for Christmas. :)
Norma S D on Nov 29, 2019
With a 1-8tpi thread built should fit my Harbor Freight midi lathe without having an adaptor
Gary on Nov 29, 2019
Excellent value
Ralph t on Nov 29, 2019
Fits the excelsior mini lathe without an adaptor
Sam S on Aug 10, 2019
making my Excelsior lathe more operational and better
Sylvie B on Jul 13, 2019
Good chuck, good discount and free shipping.
Gary P on May 10, 2019
make the lathe more versatile
Greg M on Feb 9, 2019
I need a chuck and it appears to be to best.
Antwan M on Jan 31, 2019
Because of ratings and the lathe isn’t much good without a chuck.
Ned Y on Jan 29, 2019
It was what I was looking for and it was the right price
darwin m on Jan 28, 2019
It seemed like the right thing to do at the time!
Scott O on Jan 24, 2019
Good reviews and at a price that could be passed up.
Martin W K on Jan 23, 2019
Just bought a lathe and needed a chuck
Neil Richard J on Jan 23, 2019
Just what I was looking for
Pinkey M on Jan 22, 2019
All the great reviews is what tipped the scales for me!!
Daniel S on Jan 22, 2019
I need the chuck to turn bowls, I need only the body because I already have the 2" insert. If this comes with the Chuck I will return the 2" insert I just received from you. I tried to order the body only but could not find it by itself.
Raymond W on Jan 21, 2019
I chose this chuck because I trust Rockler industry tremendously! <br />I have confidence in the products that Rockler offers.
Willard L on Jan 19, 2019
Great reviews
marty r on Jan 19, 2019
My son's woodshop... Birthday gift...
Donna B on Jan 17, 2019
Wanted a second chuck for Cole jaws
William S on Jan 17, 2019
Good reputation
Steven on Jan 13, 2019
It fits my Nova lathe
Ron on Jan 10, 2019
price, videos, research, and reviews.
Juan-Carlos D on Jan 9, 2019
I'm due for a chuck upgrade from my old two rod system. Hope it will be more convenient
Ted L on Jan 7, 2019
Needed it to make bowls
Jeremy N on Jan 5, 2019
i want to turn bowls and it was on sale.
James B on Jan 4, 2019
Great price!
STEVE S on Jan 4, 2019
for turning bowls.<br /><br />I have always had/got great guilty from you.
Thomas J on Nov 26, 2018
Good reviews for this chuck
Winston S on Aug 31, 2018
I have another one and wanted to avoid changing the jaws so much. I will leave the 3 in jaws in this one and use the other for 2 inch jaws. Also it was on sale and didn't need an insert.
John F on Aug 2, 2018
I needed a Chuck for my jet 1015 to start my first time turning of specific size stock and did a lot of looking around. This appears to be what will meet my expectations.
Rolfe R on Jul 21, 2018
Lathe did not come with one
Michael R on Jul 20, 2018
because I have 2 lathes and one chuck
lucy j b on Apr 17, 2018
Kent on Mar 21, 2018
as a beginner in wood turning, this was recommended by a friend
Steven S on Mar 13, 2018
to try my skills at turning and to see firsthand if this specific chuck is a good investment.and also because it being offered at a good sale price. thanks Rockler.
lee t. on Mar 5, 2018
GREG O on Feb 22, 2018
Was looking for a quality chuck for my new lathe and this looked like a great deal for the price (33% off)
Kent D on Feb 9, 2018
Got Shopsmith lathe working. Need to upgrade accessories
Gary C on Jan 13, 2020
It was a good price.
William W on Dec 2, 2019
What is the minimum diameter that can be clamped in the chuck?
Jim G on Feb 26, 2016
BEST ANSWER: 1 5/8, or just a tad larger. With the jaws supplied. There are other jaws available that take it way down. I have also used a Jacobs chuck in the head stock, then you cna get right down to 1/16! I like the chuck, I have a similar One-way (with stepped jaws). I switch back and forth, no big deal. The little Nova lathe, however, I am not quite as happy with.
Is this the right chuck for the Excelsior mini lathe?
Dixter on Jun 10, 2016
BEST ANSWER: YES: the Nova G3 Comet II is pre-threaded for 1"-8tpi, which fits the Excelsior mini lathe. You will need to remove the set screw, which is used only when the chuck is fitted to a reversible lathe.
Will this chuck fit on a CENTRAL MACHINERY? It is 1", do not know thread pitch and it has reverse threads.
Guest S on Nov 19, 2017
BEST ANSWER: Sure does. That’s what I have. Works great.
What adapter do you use for a nova chuck on a shop smith?
Calvin K on Nov 24, 2017
BEST ANSWER: First, the Nova G3 Comet II chuck WILL NOT adapt to your Shopsmith... you'll need the Nova G3 INSERT chuck with an adapter instead. Look for the 5/8" w/ Set Screw adapter to fit your Shopsmith.
Why is it required to remove set screw for jet 1221vs? Will it cause damage to lathe to leave it in? Removing will defeat purpose of buying a reversible chuck
Ricky on Feb 22, 2018
In the description it says that with the set screw removed it will work on the Jet 1221VS. In any adapter required for this or does it mount directly to the lathe?
Nate H on Feb 3, 2016
BEST ANSWER: I use mine with a Rikon Model 70-100 so I do not know how it will work with other lathes. However, I do like how it works with my lathe. The tool is limited only by MY lack of skill.
Can this chuck be adapted to 3/4" 16tpi?
Rand H on Nov 27, 2016
BEST ANSWER: NO: you'll need the Nova G3 INSERT chuck (or any other model of insert chuck) with a 3/4"-16tpi threaded adapter to fit your lathe.
Would this chuck work with a Delta 46-250 Midi-lathe?
Harry D on Nov 25, 2016
BEST ANSWER: yes it would. I liked it so much that I bought a second one so that I could use the available options more easily.
Will this chuck work on a shopsmith with a 1"x8tpi adapter?
Rick R on Nov 17, 2016
BEST ANSWER: Nova sells the adapters to fit their chucks to just about any/all lathes. If you go to their website and enter the model of this Chuck into their search engine it will show all the the thread adapters they have...and I am sure they will have one in the thread size you mentioned.
Do I need an adapter to mount the Nova G3 Comet II Reversible Chuck on my Delta 12.5 inch diameter lathe?
Kruz on Feb 5, 2018
BEST ANSWER: All the Delta 12" lathes I remember have had 1"-8tpi threads, so the G3 Comet II chuck will fit. It's easy to check your lathe's measurements: you're looking for a threaded spindle that's 1" in diameter (or darned close), and there are eight threads to every inch along the length.
how do you use a lathe chuck?
A shopper on Jul 25, 2015
BEST ANSWER: I turn a lot of vases with my chuck. first you need to cut a tenon on one end i usually cut mine to a 2 inch diameter between centers and then lock in the jaws of the chuck. Just remember not to seat the tenon all the way in, keep it off the bottom of the chuck about a 16th of an inch or it won't turn true. If you go to you tube watch Cap'n Eddie Castlin's videos and Carl Jacobson has good one too.
I have a Rikon70-220 vsr lathe. Is the Nova G3 Comet II reversible chuck compatible with this?
Jim J on Nov 28, 2019
BEST ANSWER: My chuck has 1" dia - 8 threads per inch and fits my Rikon 70-050 VS lathe. I use the chuck a lot and like it. As long as your threads match, it will work for you.
The jaws do not have grooves as other jaws do for different chucks. Does this create a slippage problem on holding bowls while turning?
Kruz on Feb 4, 2018
BEST ANSWER: There is no problem with the bowl slippage. I make my connection close to the size of the chuck jaws when closed. This gives plenty of contact to support bowls. I have made bowls up to 14 inches across the top of the bowl and had no issues.
Can this be used with a Grizzly 12 inch bench top lathe?
JOE Z on Jun 19, 2017
BEST ANSWER: If the 12" lathe you're asking about has a 1" (diameter), 8-TPI (right-handed threads per inch) spindle, this chuck will fit it.
Will this chuck work with the Jet 1015?
Gordon M on Nov 24, 2016
BEST ANSWER: If the Jet 1015 has a one inch, 8 threads per inch spindle with right hand threads (and it appears to, based on a quick Google search), this version of the G3 will fit it. Otherwise you'll want another version of the G3 with the appropriate adaptor for the spindle you have.
Will the G3 work on a Grizzly G1495 woodlathe?
Mark C on Aug 12, 2018
BEST ANSWER: Yes it works just fine. In hind sight I wish I would have bought a chuck with more flexibility but its hard to justify the cost in my case.
Ron K in Bellingham
on all my chucks, turning the chuck key to the right tightens the jaws on a tenon. Is it the same with the Nova G3?
clifton c on Nov 26, 2016
BEST ANSWER: I Guess it would depend on what side your headstock is on! If your standing in front of the lathe and your chuck is on your left side then the answer is "No". Turning the key to the right (clockwise) would be opening the jaws.
What is a self metal finish? will a self metal finish rust?
richard s on Oct 24, 2016
BEST ANSWER: I imagine it's a plating. I have not had any oxidation issues. Keep it lubricated and shouldn't have any rust issues.
Does this screw on normal or is it reverse threads? Thanks
Justin on Mar 6, 2018
BEST ANSWER: This is a "normal," or right-handed (RH) thread, which fits over 99.99% of all lathes. The LH and RH/LH threaded accessories that you see now and then are designed to fit on the outboard end (left-hand end) of lathes which are equipped for outboard turning.
The jaws on this chuck do not have gripping grooves as other jaws do. Can this cause a gripping problem?
Kruz on Feb 5, 2018
BEST ANSWER: Nova's jaw design avoids damaging the wood any more than necessary (less clean-up work to finish), but it still provides plenty of gripping power. Just be sure to read and follow the instructions for how to mount a bowl using these jaws: it's not complicated or difficult by any means, but you really don't want to risk getting it wrong and having tree chunks flying around your shop.
What is the largest diameter that can go inside of the jaws?
pete w on Jul 2, 2016
BEST ANSWER: Hi Pete, I. Honestly don't know what the largest diameter could fit into the G3 jaws assuming that you are asking about the chuck equipped with the standard jaws that come with the chuck. The good news is that there are a wide variety of jaws available that will allow you to turnn larger diameter blanks.
Will this chuck fit my jet 1014vs lathe?
Gary C on Dec 31, 2015
BEST ANSWER: YES: the Jet 1014 series lathes all have a 1"-8tpi headstock spindle thread, the same as the Nova G3 Comet II. Other lathes may require the G3 Insert chuck and a threaded adapter.
I see the Nova G3 offers the option of turning in reverse without the chuck unscrewing itself and flying across the workshop, which is great. I know it's a selling point for devoted woodworkers who like to sand in reverse as a finishing-touch polish after sanding in forward mode. But what about actually turning in reverse? Are the set screws on the Nova G3 sufficient to hold the chuck in place against the greater force being applied while turning (including the occasional, dreaded, catch)? That's a big difference between the light-pressure resistance of sanding in reverse and actually cutting into the wood in reverse.
So, is this chuck up for the task?
BTW, I like the option of reverse turning simply because it makes it easier to safely access the inner wall of a bowl, etc. For comparison, when turning in forward mode, one has to position himself to scrape the inner wall of the spinning bowl nearest to the turner, essentially contorting one's arm to reach back at the inner wall that's facing away from the's terribly awkward (and hard to explain without illustration).
When turning in reverse, the inner wall of the opposite side of the bowl is much more convenient to access as it's basically facing the turner, much like when one faces a basic spindle turning.
Bottom line: If the Nova G3 is safe to use for TURNING in reverse, I'm sold.
Anyone have input?
Joe M on Dec 29, 2019
BEST ANSWER: I believe this is NOT a good idea! Nova does not recommend it and I found NO instances of anyone trying it on YouTube - and they do not seem averse to doing many crazy things on YouTube!😁
Will this fit a craftsman 21752 midi lathe? Looks like I have only a morse taper, no threads. Maybe I'm missing something?
StokedOnSpokes on Dec 2, 2019
BEST ANSWER: Your faceplate should come off you headstock and is 1 and 8" thread. So this chuck should work
I am just starting out in this art and purchased a JET JWL- 1442VSK - I am wanting to star simple and work up to bowls and vases - would this be an item that would work for this model?
Bsiskusa on Jan 2, 2019
BEST ANSWER: Should work. Check the threads on your headstock
Is this chuck the same as the Delta Nova chuck 46-461?
MattR on Dec 30, 2018
BEST ANSWER: Honestly, I’m not familiar with the Delta Nova chuck. My purchase of the Nova G3 Chuck was a gift. Sorry I couldn’t help.
Would this chuck work with a Rockwell 4 speed wood lathe?
on Oct 5, 2018
BEST ANSWER: It will work if the thread portion from the headstock is 1" 8tpi
Will this chuck fit on my Excelsior MC-1018 ?
Michael D on Aug 29, 2018
BEST ANSWER: Yes. The Nova G3 chuck will work fine.
I purchased a Excelsior mini lathe from Rockler a few months a go. I love it. I bought the Nove G3 chuck and it doesn’t thread into the spindle. Chuck threads are much larger. What adapter do I need?
Rod N on Aug 14, 2018
BEST ANSWER: The Nova G3 Insert chuck requires a Nova Adapter IXNS or Rockler SKU# 47163 to fit the Excelsior lathe. A Nova G3 Reversible chuck does not require an adapter to thread on the Excelsior lathe.
i have a jet jwl-125 lathe I wondering if this chuck will fit my lathe and would it be able for me to make bowls?
Richard on Oct 31, 2017
BEST ANSWER: It will fit on your lathe, however the set screw you need to tight in order to use your lathe in reverse does hit the last thread on the spindle