Oversized Chuck Talk On The G9729

LX Kid

H-M Supporter - Gold Member
H-M Supporter Gold Member
Joined
May 26, 2015
Messages
694
I bought a 10" Chinese 4-Jaw independent chuck thinking I could use it on my 17x31" Grizzly. I bought it at a yard sale, new in crate, so I had to make a quick decision and bought cause the price was right. Once I got home and checked my manual, it does not recommend using any chucks larger than 6". I've had time to soak it in and was thinking why wouldn't it be good? It weights 50 pounds and my spindle bearings are roller type. The chuck mount is part of the spindle with only three holes for mounting chucks, back plates, face plates etc. They use these same type bearings in autos and they support 3000 lb front ends so why couldn't it support 50 lbs? Crashing the tool post would really be hazardous to the gears as well as maybe starting the chuck spinning. Does anyone else use a larger than recommended chuck on their lathe? What ya think?
 
I didn't read the title properly, sorry.
 
Last edited:
It is a 3-in-1 but is a more robust machine.

View attachment 122099

I think they boost the height of the lathe to make the milling envelope better. This might make it a bit more flexible compared to a regular 17" lathe. The head stock does look quite narrow gaugeing against the chuck pictured but it's always hard to tell from photos.

The grizly site says it has an MT4 spindle bore so the spindle must be fairly sturdy.

Could be an ass covering thing also as it could make it much more top heavy.

Is their a max work piece weight spec in the manual ?

Stuart
 
To play it safe I have already ordered a 6" 4-jaw. I've already got a bundle of money in the lathe cause I bought it at an estate sale and it was missing a lot of the accessories. Such as face plate, back plate adapter, change gears, follow rest, lead screw crank, tools etc. Not to mention all the problems that I'm still working out. " However it is getting better as I have tackling them one at a time." If I ever buy another lathe it won't be Chinese. Some of the more expensive Chinese models are probably a lot better than this budget priced 3-in-one. I do have some wooden floor weight limitations in my little shop.
 
I'd have to look at the manual again but I don't recall seeing any weight piece specs.
 
To play it safe I have already ordered a 6" 4-jaw. I've already got a bundle of money in the lathe cause I bought it at an estate sale and it was missing a lot of the accessories. Such as face plate, back plate adapter, change gears, follow rest, lead screw crank, tools etc. Not to mention all the problems that I'm still working out. " However it is getting better as I have tackling them one at a time." If I ever buy another lathe it won't be Chinese. Some of the more expensive Chinese models are probably a lot better than this budget priced 3-in-one. I do have some wooden floor weight limitations in my little shop.

It's always good to get to know your lathe and how to put it together and take it apart etc. Wooden floors are nice, they bend a little to let you know your using them :) (well the old georgian ones do, the ones made out of french war ships less so :) )

Stuart
 
The smaller chuck recommended might be to try and protect the gearing on the lathe. With a larger heavier chuck not only could you be cutting at larger diameters but you would also generate more momentum. Stay small my friend. Jack
 
The smaller chuck recommended might be to try and protect the gearing on the lathe. With a larger heavier chuck not only could you be cutting at larger diameters but you would also generate more momentum. Stay small my friend. Jack
That sounds like good advice to me.
 
Back
Top