Looking for advice on a 8" plus wood lathe chuck

[Stephen Zumbach]

Good morning

I own a Grizzly G0766 - 22" x 42" Variable-Speed Wood Lathe
I already have a few 4" chucks, and I would like to buy a 8" or 10" chuck, but they seem to be few and far between.

I am looking for recommendations on what my options are.

It has a "1-1/4" x 8 TPI spindle" But I am sure I could find an adapter.

All of the 8" ones I have seen all seem to be metal, and all have a mount that my wood lathe doesnt have.
I would like to try turning 10,15,20" bowls, but seriously on a 4" chuck that looks dangerous.

any advice would be most appreciated.

 

[Michael Anderson]

When you say 8” chuck, are you referring to jaw size or chuck body diameter? I suspect (hope) the former. Vicmarc sells chuck jaws that are suited for 223m (~8.7”) tenons, which if used with their vm150 chuck would be seriously heavy duty.

If you need anything bigger than that, I’d recommend going the faceplate route.

 

[Bill Boehme]

I’ve never heard of 8 or 10 inch chucks. Are you asking about faceplates? You can get 8" and 10" faceplates from Oneway. There shouldn’t be a problem using a 4" chuck to turn bowls up to 16" or even 20 inches.

Michael mentioned the Vicmarc 150 chuck. You can also use the Vicmarc 120 which is the same as the 150, but it doesn’t have the rapid scroll feature.

 

[Michael Anderson]

the Vicmarc 120 which is the same as the 150, but it doesn’t have the rapid scroll feature.

Actually didn’t know that. Cheers!

 

[Lou Jacobs]

I have a Nova Titan III chuck for large and heavy work. It is more than enough chuck to handle the largest bowls and platters that my Powermatic 3520C can handle. Here are the specifications of the chuck:

Brand	Nova
Manufacturer Part Number	13060
Weight	11.250000
Tech Spec	Threading: 1-1/4'' x 8 TPI (direct thread) Chuck Dimensions: 5'' diameter x 2-1/2'' deep Powergrip Jaw Depth: 1-1/2'' Contraction Capacity (with included jaws): 4'' to 5-3/8'' Expansion Capacity (with included jaws): 4-5/8'' to 6''

I think if you get some practice in on gradually larger bowls, you’ll gain confidence and realize that a 4” chuck is big enough to handle your needs.
Edit: I got it mostly to handle coring with the McNaughton system. That puts lots of pressure on the tenon, and I’ve never had one fail.

 

[Stephen Zumbach]

Thanks much for the comments so far.

I currently have a onway stronghold and I thibj the other us a Nova but has no markings that I can tell.

The stronghold was in a drawer and it's bigger then I remember , so I think might looks at jaws for it

The smaller chuck is just so tiny, I cut imagine feeling safe using it.

 

[Doug Freeman]

Get a set of 6” jaws for the stronghold chuck, I think they will handle what you want to turn.

 

[Marc Banka]

Vicmark 120 is the way to go. Seriously strong with a great selection of larger jaws. Certainly fits your spindle.

 

[Kent Jaffrey]

The Stronghold, with larger jaws, is certainly capable of any bowl size you mentioned. If you like the profiled jaws you should be all set once you decide how big you want. I don’t use the stronghold but would think #4 jaws could work easily for 16” and probably 20”,

 

[Bill Boehme]

The Stronghold, with larger jaws, is certainly capable of any bowl size you mentioned. If you like the profiled jaws you should be all set once you decide how big you want. I don’t use the stronghold but would think #4 jaws could work easily for 16” and probably 20”,

I have a couple Stronghold chucks and the #4 jaws will hold anything that @Stephen Zumbach can turn on the G0766. The nice thing about Stronghold chucks is that you can choose between profiled or dovetail jaws (or both).

 

[JeffSmith]

I regularly turn bowls in the sizes you mention - using. a Oneway Stronghold with 4" dovetail jaws and have never lost a blank yet. I core using the same chuck and jaw setup. Got three Strongholds and three Talon chucks - they're strong enough to handle anything that Griz can turn.

 

[Stephen Zumbach]

thanks everyone, I ordered the #4 jaws, Standard and dovetail.

much appreciated for the insight.

 

[hughie]

I have a Nova Titan III chuck for large and heavy work. It is more than enough chuck to handle the largest bowls and platters that my Powermatic 3520C can handle. Here are the specifications of the chuck:

Brand	Nova
Manufacturer Part Number	13060
Weight	11.250000
Tech Spec	Threading: 1-1/4'' x 8 TPI (direct thread) Chuck Dimensions: 5'' diameter x 2-1/2'' deep Powergrip Jaw Depth: 1-1/2'' Contraction Capacity (with included jaws): 4'' to 5-3/8'' Expansion Capacity (with included jaws): 4-5/8'' to 6''

I think if you get some practice in on gradually larger bowls, you’ll gain confidence and realize that a 4” chuck is big enough to handle your needs.
Edit: I got it mostly to handle coring with the McNaughton system. That puts lots of pressure on the tenon, and I’ve never had one fail.

I have 5 of the equivalent of the Titan 125mm or 5" dia SN2 Nova chucks you can swing a 29" diameter with them. I have done a 20" ... a piece of cake for them, much depends on the jaw configuration. In fact, these chucks are my go-to chucks and I would buy more, but they are very hard to come by these days and Titans aren't sold down under.

 

[Neil S]

Michael mentioned the Vicmarc 150 chuck. You can also use the Vicmarc 120 which is the same as the 150, but it doesn’t have the rapid scroll feature.

Vicmarc have the best range of larger jaw sizes.

The VM120/140/150 chucks have jaws that go up to 223mm (true circle) outside dovetail and about 200mm inside (true circle) and larger than that if true circle is not required.