Store Locator

Get Expert Advice

Return Policy

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
99 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great chuck
Works as described with no issues and a great price.
July 17, 2019
5 months ago
Woodworking Experience:
Just love it easy to use good price and it holds on tight can’t go wrong with it
July 5, 2019
6 months ago
Nova G3 Comet II Reversible Chuck
it is a excellant top quality tool.
June 9, 2019
6 months ago
Woodworking Experience:
Very versatile! Excellent quality.
March 24, 2019
9 months ago
Woodworking Experience:
You need one
Ok, new to turning and thought eh, do I really need one of these? I bought one for my Grizzly 10” bench lathe...dang glad I did. Love it. Cannot wait to justify adding other jaws to expand its capability. Easy to set up, easy to use and makes turning more fun and rewarding. Buy one, you won’t regret it.
March 6, 2019
9 months ago
Woodworking Experience:
I've been using Aloft and make the job more easy
February 8, 2019
10 months ago
Woodworking Experience:
This has handled everything that I have asked it to do so far. Good solid chuck.
Works better than expected. Highly recommend.
February 6, 2019
10 months ago
Woodworking Experience:
Very impressed with this chuck. The fit and finish is impeccable.
This chuck is the absolute best accessory you can get for your lathe.
Simple to install and holds your stock securely. They're worth every cent.
February 4, 2019
10 months ago
Woodworking Experience:
Perfect for a novice woodturner
I am brand new to wood turning and bought this chuck to go with my Central Machinery 10”x18” tabletop mini-lathe from Harbor Freight. It has made a world of difference in the efficiency of turning pieces as well as my confidence in the stability of the blank while turning. For the price, speed of delivery, and ease of use, you can’t go wrong.
January 30, 2019
11 months ago
Woodworking Experience:
I love all my Nova accessories. This chuck was my first Nova purchase. Everything has been good quality. I use it with their pen jaws and Nova drill chuck in my lathe to drill perfect pen blanks. Makes the process easy and always accurate.
January 24, 2019
11 months ago
Woodworking Experience:
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 36 questions Browse 36 questions and 118 answers
Why did you choose this?
Rockler Store
It was a good price.
William W on Dec 2, 2019
Just bought a new lathe and I need accessories
John B on Dec 1, 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!
Tim G on Nov 29, 2019
for turning on lathe
Robert W M on Nov 29, 2019
on sale
Chris Y 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.
terry 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
Look to be best choice for my equipment and goals.
Robert W on Feb 5, 2018
Needed for Delta Midi Lathe
Ken S on Jan 2, 2018
new to lathe and want to get into bowls & ornaments.
Eric L. G on Jan 1, 2018
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
Good price on a chuck that had good reviews and worked well with my lathe.
Jim J on Dec 1, 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.
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.
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.
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.
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
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.
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
I am interested in buying a G3 chuck and using this jaw. Why the warning? "Note: Caution recommended when using these jaws with the G3 chuck."
Brent G on Nov 21, 2016
Nova G3 Comet II Reversible Chuck
Nova G3 Comet II Reversible Chuck
Nova 75mm (3'') Bowl Jaw Set
Nova 75mm (3'') Bowl Jaw Set
BEST ANSWER: Whill the jaws will fit the G3 they are designed for work holding that exceeds the capacity of the G3. They'll work fine if you don't overload the chuck though.