Sanou K12-125, 125 mm 4 jaw chuck - Woodworking Talk - Woodworkers Forum
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post #1 of 13 Old 05-20-2019, 01:05 AM Thread Starter
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Sanou K12-125, 125 mm 4 jaw chuck

I purchased a central machinery wood lathe. It is not a mini lathe, it is a full size lathe. I am wanting to buy a wood chuck for it. How do I know which one to buy?

I am looking at a Sanou K12-125, 125mm, 4 jaw, Self Centering Lathe Chuck with Key. Is this a good brand to buy and would it fit my lathe?

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post #2 of 13 Old 05-20-2019, 04:11 AM
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What spindle size do you have?

https://www.amazon.com/K12-125-Self-...SIN=B07R428ZFH

same chuck, much cheaper here:
https://www.banggood.com/SANOU-K12-1...r_warehouse=CN



There is no backing plate shown for this chuck and no thread size given for one either......



The spindle size, diameter and thread pitch will determine what chuck will fit. Metal lathes have standard spindle sizes like 1 1/2" X 8 TPI for instance. I recently bought one from this company, but I went in person with a backing plate I knew fit my lathe spindle. The backing plate is separate and bolts onto the chuck body.


Chucks without backing plates:
https://www.wttool.com/index/page/ca...gory_id/16499/


Threaded backing plates:
https://www.wttool.com/index/page/ca...gory_id/16516/



The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by woodnthings; 05-20-2019 at 04:21 AM.
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post #3 of 13 Old 05-20-2019, 05:22 AM Thread Starter
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I eould hate to buy it and it not fit my lathe.

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post #4 of 13 Old 05-20-2019, 05:23 AM Thread Starter
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What do you mean backing plate? I am new to the terminology of wood turning.

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post #5 of 13 Old 05-20-2019, 05:41 AM
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The backing plate ....

To secure the chuck on the lathe spindle there is a threaded adaptor or backing plate that screws onto the back of the chuck.
https://www.wttool.com/index/page/ca...gory_id/16516/





It is not a term specific to woodworking, rather lathes of any type.
Lathes have spindles, chucks, tailstocks, beds etc., whether wood or metal lathes.
https://www.quora.com/What-are-the-p...-lathe-machine

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by woodnthings; 05-20-2019 at 08:10 AM.
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post #6 of 13 Old 05-20-2019, 09:05 AM
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This Sanou K12-125 chuck looks different than the other woodworking chucks I have seen. The woodworking chucks that are familiar to me all have removable jaws that are attached with small screws. They have jaws that come in a variety of shapes and sizes. The price on this Sanou chuck is comparable to the more familiar style of chucks, so I wonder what makes the Sanou chuck so special?

Chucks come in two types:
* Some chucks thread directly on your lathe. The threads on your chuck must match the threads on your lathe. My Nova G3 chuck has a 1 inch x 8 TPI threads. It does not fit on a lathe with 1.25 x 8 TPI threads.
* Some chucks are "insert chucks." They require an insert (a special adapter) that matches the chuck to the threads on your lathe.
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post #7 of 13 Old 05-20-2019, 09:51 AM
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That shape chuck would not be desirable for wood turning.
If you are new to wood turning, I would do some simple stuff first on the lathe and see if that lathe will do what you want it to.
I hate to see you spend money on an accessory that might not fit another lathe.

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post #8 of 13 Old 05-20-2019, 11:21 AM
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crookedkut Ive been attempting to decide on my first chuck also. A number of the folks from this forum have commented on my thread on the subject and have given some good suggestions. If your interested in their comments they are on the link below

https://www.woodworkingtalk.com/f6/chuck-buy-212501/


The most commonly suggested chuck was the Nova G3. Heres a link to a nice bundle

https://www.amazon.com/NOVA-G3-Chuck...gateway&sr=8-3

I looked up the General Machinery lathes on Harbor Freights website and saw a 12" x 33 3/8" lathe (SKU # 34706) and it has a 1" x 8TPI spindle. If that is your lathe the Nova G3 package from the link above will fit it.
As for the second lathe I saw on HFs site, 10 In. X 18 In. 5 Speed 1/2 HP Benchtop Wood Lathe (SKU # 65345) I was unable to find any mention of its spindle size.
Just for your info and to help you identify your spindle size here are a few of the common sizes
1" X 8TPI
3/4" X 16TPI
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post #9 of 13 Old 05-20-2019, 11:24 AM
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That is a chuck for a metal lathe, you purchase the backing plate separately, mount it on your lathe and true it to your lathe spindle and then attach the chuck to the backing plate.

I would do a bit more research on chucks for wood lathes, browse through here for a start:
https://www.woodworkingtalk.com/f6/

ďEverything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.Ē
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post #10 of 13 Old 05-20-2019, 02:34 PM
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You don't want a self centering chuck!

The one you posted is a "self centering" chuck, mainly used for a metal lathe. That means you can NOT adjust the jaws individually. You need to adjust the jaws individually on a wood lathe because of odd shaped pieces.

The chuck doesn't care if it's used on a wood lathe or a metal lathe, it's the way it operates that is important. There are specific wood chucks for turning bowls that rely on a previously turned concentric boss or recess which they grip onto:
https://www.amazon.com/NOVA-G3-Chuck...gateway&sr=8-1

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by woodnthings; 05-20-2019 at 02:36 PM.
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post #11 of 13 Old 05-21-2019, 09:10 AM
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The link that @woodnthings posted above is the same Nova G3 set that I have, use, and like.

The Nova G3 fits 1 inch x 8 TPI headstock threads. If you have a 1.25 inch x 8 TPI headstock threads on your lathe and you want a Nova brand chuck, then buy a Nova Supernova2. The Supernova2 chuck is also available in a similar multi-jaw kit with a plastic case.

If you want one of those multi-jaw Nova chuck kits in the plastic case, don't worry if it says "30th anniversary" or not - it is the same kit either way.
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post #12 of 13 Old 05-23-2019, 01:57 AM Thread Starter
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Quote:
Originally Posted by Mikhail2400 View Post
crookedkut Ive been attempting to decide on my first chuck also. A number of the folks from this forum have commented on my thread on the subject and have given some good suggestions. If your interested in their comments they are on the link below



https://www.woodworkingtalk.com/f6/chuck-buy-212501/





The most commonly suggested chuck was the Nova G3. Heres a link to a nice bundle



https://www.amazon.com/NOVA-G3-Chuck...gateway&sr=8-3



I looked up the General Machinery lathes on Harbor Freights website and saw a 12" x 33 3/8" lathe (SKU # 34706) and it has a 1" x 8TPI spindle. If that is your lathe the Nova G3 package from the link above will fit it.

As for the second lathe I saw on HFs site, 10 In. X 18 In. 5 Speed 1/2 HP Benchtop Wood Lathe (SKU # 65345) I was unable to find any mention of its spindle size.

Just for your info and to help you identify your spindle size here are a few of the common sizes

1" X 8TPI

3/4" X 16TPI
Yes ,i have stock #34706.

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post #13 of 13 Old 05-23-2019, 02:00 AM Thread Starter
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Quote:
Originally Posted by woodnthings View Post
The one you posted is a "self centering" chuck, mainly used for a metal lathe. That means you can NOT adjust the jaws individually. You need to adjust the jaws individually on a wood lathe because of odd shaped pieces.

The chuck doesn't care if it's used on a wood lathe or a metal lathe, it's the way it operates that is important. There are specific wood chucks for turning bowls that rely on a previously turned concentric boss or recess which they grip onto:
https://www.amazon.com/NOVA-G3-Chuck...gateway&sr=8-1
Thanks woodnthings. That is what I needed to know. All of you have been a big help. I will look at the links you all provided.

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