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Jacobs chuck at amazon.ca

PeterT

Ultra Member
Premium Member
#5
That's a good price. I cant find the links I was perusing but the upshot was there's Jacobs & there's Jacobs. The precision version with stated low runout specs is now stupid expensive. The 'opinion' was the industrial grade was no better & no worse than other brands in the same (~150) price range and Jacobs is offshore made now anyway. Not too critical for a drill press, but maybe on lathe/mill depending on what you are doing IMO. I bought an MT3 keyless for my lathe when Glacern had a big sale. I want to say Taiwan made but not 100%. I'm really happy with it. https://www.glacern.com/drill_chucks

Recently I found these 'PM' chucks on ebay which look remarkably similar, so maybe a name re-branding thing? I have the smaller one coming in the mail so I'll report back how it performs.
http://www.ebay.ca/itm/BRAND-NEW-0-...SHANK-0-1-2-/232161106119?hash=item360de158c7
http://www.ebay.ca/itm/232138910175?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT

low runout Jacobs version, holy sh*t $
http://www.jacobschuck.com/keyless-...130-j6-high-precision-keyless-13mm-chuck.html
 

Janger

(John)
Administrator
Premium Member
#6
IMG_0402.JPG Well this turned out to be a smaller chuck than I expected. Can never understand the size of anything on the internet. why are some chucks BIG and some smaller if they both hold a 1/2" shank?

Anyway it is quite smooth action and runout seemed to be about +/- 2/1000 measuring as like I did in the picture. Measuring at the R8 shank showed a little vibration but nothing measurable. So - how is that? I drilled a small hole and measured it at .101 at all angles of the clock with my callipers. Pretty round hole to me. What should I expect?
 
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PeterT

Ultra Member
Premium Member
#7
If by 0.002" runout you mean TIR, total indicator reading (as in 0.001" per side) that's pretty decent. Inline or maybe better than average for medium price chucks. For 62$ that's a great score IMO. Just for sh*ts & giggles, measure your R8 bore, ideally with a DTI. If its bang on, then the deviation is occurring between your arbor and chuck assembly. It could be either or. I've had a crappy arbor with 0.005" runout measured on the tapered boss which fits into the chuck. Back it went. You can also get combinations like the female socket is out 0.002" & arbor/chuck is out 0.002, so depending on how its orientated & seated you either get 0.000" or 0.004". The socket side should be very low runout but if it was abused or the bearings are going... BTW when you check things like this with a drill confirm that the letters on the shank are not every so slightly raised as it & it may not chuck 100% true depending where the jaws land. My good bits are all sub-surface, but I have others I think were stamped & not ground up there. Dowel pins or drill blanks are great for things like this, they are hardened & precision ground & reasonably cheap.
 

Janger

(John)
Administrator
Premium Member
#9
That's a good price. I cant find the links I was perusing but the upshot was there's Jacobs & there's Jacobs. The precision version with stated low runout specs is now stupid expensive. The 'opinion' was the industrial grade was no better & no worse than other brands in the same (~150) price range and Jacobs is offshore made now anyway. Not too critical for a drill press, but maybe on lathe/mill depending on what you are doing IMO. I bought an MT3 keyless for my lathe when Glacern had a big sale. I want to say Taiwan made but not 100%. I'm really happy with it. https://www.glacern.com/drill_chucks

Recently I found these 'PM' chucks on ebay which look remarkably similar, so maybe a name re-branding thing? I have the smaller one coming in the mail so I'll report back how it performs.
http://www.ebay.ca/itm/BRAND-NEW-0-...SHANK-0-1-2-/232161106119?hash=item360de158c7
http://www.ebay.ca/itm/232138910175?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT

low runout Jacobs version, holy sh*t $
http://www.jacobschuck.com/keyless-...130-j6-high-precision-keyless-13mm-chuck.html
What did you think @PeterT Peter of these PM chucks ?
 

Tom Kitta

Active Member
#10
I doubt too many people buy Jacobs chucks at listed price. Maybe industrial orders - same people that pay like $10 per carbide insert.

I got like 10 different chucks made by Jacobs. All work great. Have not tested the runout on any. If I needed something very precise I just use a ER32 collet holder.
 

PeterT

Ultra Member
Premium Member
#11
Janger, I never bought the PM, was just pointing out potential similarity. Their ebay seller ads come & go so might look different today & unfortunately even the website isn't complete in terms of what he sells. Maybe ebay is occassioal inventory reduction? I'm pretty certain a few companies re-brand the good Taiwan chucks & collets under their own label. The body & specs are identical, just different laser logo. But looks can be deceiving amongst the copycats so be sure of what you are getting. With shipping & USDFX & possibly customs fees, you might be $ ahead a GS brand purchased in Canada. Sowa sells them but maybe worth waiting for a sale. Rohm is another decent name depending on which model. KBC sells (select models) again wait for sale if you are in no hurry. Its also important to buy a decent arbor - no sense mounting a 0.0002 chuck to a 0.002 TIR arbour.

http://www.sowatool.com/Catalogue/8/312?Category=Drill+Chucks&Drill+Chuck+Type=Keyless+Chucks
 

Tom Kitta

Active Member
#12
I can add Bison, Yukiwa and Albrecht for quality. Through the internet shows that a lot of people have amazing TIR of 0.001 with some strange "Golden Goose" brand.
 

Dabbler

Well-Known Member
#13
I bought my two Jacobs chucks brand new, and have never regretted it. It's like buying good measuring tools - you only need to buy them once.

Both of my drill chucks are keyed. I recently bought naively bought 2 keyless chucks made of chinesium and they wouldn't even hold a drill - like at all.

- the chuck is now CDN$ 187.11
 

John Conroy

Well-Known Member
Premium Member
#14
I bought this Llambrich chuck with integrated R8 abor a few years ago. Less than .001" run out. Not cheap ($300) but a beautiful piece.

20151121_093158_zpsodwesmow.jpg

I just picked up this 5/8" Vertex keyed chuck on Amazon for about $70. I've had good luck with Vertex stuff so I have high hopes for accuracy. I'll let you know after the JT3 arbor arrives.

20190225_140453.jpg
 

Tom Kitta

Active Member
#17
I think it is fair to ask $140 for it - you can choose between two and both are in excellent condition.

I also have MT5 Skoda (Czechoslovakia made - like German) live center - for $60 turns smooth.