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6" D1-4, 3 jaw chuck

canuck750

Super User
Premium Member
I have a 6" 3 jaw chuck, D1-4 cam lock mount that came with my generic 12 x 36 gear head lathe I bought used about 8 years ago. The chuck only came with one set of jaws, no outside jaws.

I also have an independent 4 jaw chuck that I often use but I wish I could get a set of jaws for clamping larger items in the 3 jaw.

I don't have any information on the manufacturer of my 3 jaw, I think its a Taiwanese lathe, plate is stamped 2001 12.

Anyone know if I can purchase a set of outside jaws for this chuck or do I need to look at a new 3 jaw chuck with two sets of jaws?

Any recommendations on a Canadian supplier for a 3 jaw chuck for this lathe, preferably 6" or larger?









 
1st - I blame you for helping me spend money by getting me to look at chucks, I've had a nagging want (not need) for a 2nd self centering chuck...was doing well resisting the urge....
Seriously.

I know you asked about 3 jaw ones, and I first checked KBC - ouch! Won't show a link, enough to say not budget friendly @ $742 for KBC brand D1-4 3 jaw chuck, TMX and BISON are 2 to 3x that.

Next I looked at what I got from Grizzly.com many years ago (April 2012) - was $165 USD back then for this (same PN) that is now $300 USD:
https://www.grizzly.com/products/grizzly-6-3-jaw-scroll-chuck-d1-4/g9819
I know you asked for Canadian suppliers but I needed a baseline

Next was to check Accusize as a Canadian supplier:
https://accusizetools.com/products/...he-chucks-direct-mount?variant=35246085243034
$425 CAD is pretty much a direct conversion of US to CAD from the Grizzly price, so pretty good. But I was curious - what about Vevor.

Well, no 3 jaw chucks listed for D1-4 but...

I just spent $299.44 CAD after taxes and discounts on a D1-4 6 jaw chuck. Has 1 review and its negative... I guess I'll see what shows up...
BTW - 1 left according to their website:
https://www.vevor.ca/lathe-chuck-c_...th-d1-4-cam-lock-backing-plate-p_010790897201

A 6 jaw is actually great for me as a second chuck, will be able to put it to use on thin wall stuff, and use the 3 jaw or 4 jaw for heavier clamping duties. I'll try to remember to do a review of it when it shows up.

Finally in closing:
its all @canuck750 fault.
 
Reversible jaws are worth getting because
1) well... they are reversible = it saves you from having a second second set of jaws to misplace
2) you can more readily buy a replacement jaw set because they only rely on the tongue & groove dimension, not the scroll/teeth. Here you need to confirm with an offshore brand. Is it a standard dimension or is it their own concoction dimension or is it a standard dimension but a not-so-so-great fitting actual dimension
3) the bolt pattern means you can install machinable jaws which are very handy for oddball or repetitive fixturing. Picture facing/boring something like a thin washer part. A fussy setup on a regular 3J requiring a sketchy back stop & low grip contact area on the perimeter. But a machine jaw can be turned in-situ to exact holding requirements. You can make these yourself out of aluminum. (Haas is just showing representative picture, I suspect they cost a fortune).



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if you are patient you can find something on EBay. Sometimes they are new old stock. Unfortunately they are heavy so shipping is an issue. Bison is a good name & you can always get jaws for them. Unfortunately new Bison chucks are through the roof cost wise. If you go with an Asian chuck, get something that has a stated runout and a return policy. For example Accusize is in Canada so if it says 0.002" runout & you get a Monday model at 0.005" at least there is hope for exchange / partial refund. If you but it from other vendors, you may not be so lucky.
1755208540179.png
 
Reversible jaws are worth getting because
1) well... they are reversible = it saves you from having a second second set of jaws to misplace
2) you can more readily buy a replacement jaw set because they only rely on the tongue & groove dimension, not the scroll/teeth. Here you need to confirm with an offshore brand. Is it a standard dimension or is it their own concoction dimension or is it a standard dimension but a not-so-so-great fitting actual dimension
3) the bolt pattern means you can install machinable jaws which are very handy for oddball or repetitive fixturing. Picture facing/boring something like a thin washer part. A fussy setup on a regular 3J requiring a sketchy back stop & low grip contact area on the perimeter. But a machine jaw can be turned in-situ to exact holding requirements. You can make these yourself out of aluminum. (Haas is just showing representative picture, I suspect they cost a fortune).



View attachment 68619View attachment 68620View attachment 68621

if you are patient you can find something on EBay. Sometimes they are new old stock. Unfortunately they are heavy so shipping is an issue. Bison is a good name & you can always get jaws for them. Unfortunately new Bison chucks are through the roof cost wise. If you go with an Asian chuck, get something that has a stated runout and a return policy. For example Accusize is in Canada so if it says 0.002" runout & you get a Monday model at 0.005" at least there is hope for exchange / partial refund. If you but it from other vendors, you may not be so lucky.
View attachment 68622
Thanks for this!
 
I looked at the.Vevor 6 jaw Chuck. Looks like you have to drill and tap the backplate for the three camlock studs and perhaps drill and tap for the backplate as well?
 
I looked at the.Vevor 6 jaw Chuck. Looks like you have to drill and tap the backplate for the three camlock studs and perhaps drill and tap for the backplate as well?

I hope not but we'll see when it gets here. I can do that tapping and drilling but that seems to be a pretty silly way to offer a D1-4 compatible chuck, and I hadn't looked that closely at it, but I'm hoping it just a case of lazy marketing with pictures that are "close enough" to the product being offered...
I felt like gambling this week...
 
After going through the great comments and information provided I am leaning to Accusize for a new 3 jaw chuck, considering paying the up cost for a 8” - 3 jaw chuck, any comments on pros and cons between a 6” and a 8” chuck other than the increased diameter of the 8” chuck?
 
Or Accusize on Amazon prime, free shipping and same price as their non-amazon website. So the question is can it be shipped for $55.70 or less?
https://www.amazon.ca/Accusize-Two-...9-0102/dp/B00VKSHIT2/ref=ast_sto_dp_puis?th=1
Lately I've been using Amazon for things like this, can use Amazon for free returns if its a dud/damaged/ etc. I know, US based company, but they are the middle person in this transaction for a Canadian supplier of an offshore product (everyone gets a cut!)
 
any comments on pros and cons between a 6” and a 8” chuck other than the increased diameter of the 8” chuck?
8 vs 6 everything is a bit bigger so kind of depends what you do most of. Weight. Cost of jaws. Sometimes 8" have larger minimum holding diameters, sometimes not. I think Bison both are 3mm even though the jaws are meatier & possibly larger 'gription' teeth profiles. But I think other chucks the minimum may be different. Possibly the runout specs might be different but you'd have to check your specific brands. A big chuck on a small machine is not a good match. Extra weight on the spindle. Potential imbalance if its not well made and/or RPM limit. But if you have a bigger machine no problem. Remember in many larger diameter setups the jaws extend past the chuck body so factor that against your true swing clearance over the ways with/without gap if that's an issue.
 
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Here are reverse jaws for your chuck:

That's a good find Tom, assuming they are ground correctly & all that. Have you bought a set yourself?

I found out the hard way (with a POS 3" chuck) that the fit between the jaw face & tenon needs to be quite close & just right. I measured the jaws & it seemed it was very close to a metric nominal dimension. But my guess is they messed up milling the chuck body slots because they were loose & inconsistent. Now in normal practice do they start with a 12mm jaw & make the slot 12.02mm, or do they start with a 12mm slot & make the jaws 11.98mm? Anyway mine were sloppy, repeated poorly & horrible TIR. Also the scroll was a disaster, like pseudo-forged. So it always felt gritty & cycled tight/loose as you turned the key.

But re those Ali jaws, if they did a decent grind job to presumably some kind of 'jaw standard' it would be the best fix for an otherwise good chuck body, maybe worth a shot. I have heard of people buying Bison jaws for their non-name Asian chuck with hit & miss results so who knows. I do know that Bison jaws fit Bison chucks, you just need to hold your nose & click Buy $$$
 
Unfortunately they don't seem to offer a set to fit my chuck, I need the jaws to be 18mm wide x 72mm long, the cut out height is 8mm and the depth below cut out is 10mm
 
I don’t think they reverse but I will check again. I may have found a source at the Little Machine Shop in the States, I need to email them with dimensions. They are listing a set of outside jaws for a 6” chuck, I might get lucky?

 
I don’t think they reverse but I will check again. I may have found a source at the Little Machine Shop in the States, I need to email them with dimensions. They are listing a set of outside jaws for a 6” chuck, I might get lucky?

Please keep the rest of us posted. It's not too likely that you will be the last member with that nasty little problem.
 
I am not home yet, but I have a box of spare jaws, I will try and see if I have something that will work. If you haven't heard back from me in a couple days, drop me a pm reminder..... Lots going on so I might not remember on my own... I am pretty sure that they are next to the collets for @Susquatch
 
Thanks!
These are the dimensions of the jaws i have in my 3 jaw scroll chuck


After checking the Little Machine Shop list of compatible chucks for the jaws they sell I think I am out of luck, the chuck they spec is a K11-160, seems to be pretty standard but the width, slot and overall height below slot are all different.

 
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