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Bill Gruby
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My opinion on the BS 9 collet is it is limited. They top out at only 9/16 inches. ER40 collets go to 1 inch. You would be much better outfitted with the ERs. ------ "Billy G"
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Do I need ER collets?
- Thread starter tigtorch
- Start date
tigtorch,
The big advantages to the ER collets have a greater gripping range, you don't need a draw bar, and you can pass long stock thru them on the lathe. You can make an ER collet chuck relatively easily. I bought a kit from Tallgrass Tools because it was my first real project, but you can certainly make one without the kit.
Here's a link to an old post showing what I made: http://www.hobby-machinist.com/showthread.php/7920-ER-40-Collet-Chuck(s)
Hope that helps.
Steve
The big advantages to the ER collets have a greater gripping range, you don't need a draw bar, and you can pass long stock thru them on the lathe. You can make an ER collet chuck relatively easily. I bought a kit from Tallgrass Tools because it was my first real project, but you can certainly make one without the kit.
Here's a link to an old post showing what I made: http://www.hobby-machinist.com/showthread.php/7920-ER-40-Collet-Chuck(s)
Hope that helps.
Steve
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Tom Griffin
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It looks like that lathe only has a 15/16" hole through the spindle, which means the ER 32 collets would be the proper size. You may need to get creative to mount the chuck to your spindle though. They can be had with a backing plate that could be bolted to a threaded chuck mounting plate.
Tom
ER 32 Collet Chuck
Tom
ER 32 Collet Chuck
Actually, Bill, that link showed up to 3/4".
However, overall, I think you'd be happier with a full set of ER40 collets. Find the best deal you can on a set with R8 chuck to fit your mills. Then you can make a 4C shaft and chuck to take the collets and nut. It would be a good project. You should be able to find the specs online for 4C and ER40.
However, overall, I think you'd be happier with a full set of ER40 collets. Find the best deal you can on a set with R8 chuck to fit your mills. Then you can make a 4C shaft and chuck to take the collets and nut. It would be a good project. You should be able to find the specs online for 4C and ER40.
As billy said those type collets are limmited in use. not only in size but in depth also. ER40 would alow you to go throu the spindle for longer parts.
I made my Er40 collet chuck. This place sales a kit for ER32 but if you call them thay have a kit for ER40.
http://shop.tallgrasstools.com/product.sc?productId=4
I made my Er40 collet chuck. This place sales a kit for ER32 but if you call them thay have a kit for ER40.
http://shop.tallgrasstools.com/product.sc?productId=4
Hello, I dont like er collets for tool holding in my mill which does not have a spindle lock because of the larger range & because (i assume) they are metric based. Some inch sized tools fit near the lower capacity range & take quite a bit of loosening to get a tool out, whereas tools are usually a slip fit in inch based collets. With the er collets you need 3 hands, one to hold the spindle, one to loosen the collet, & one to catch the tool so it doesn't drop on vise or table. I suppose not a problem for holding stock in a lathe. Regards, Earl
I'm not much of a machinist yet, but I'm learning, I put an ER16 collet set up on my Taig lathe and loved it so much I put a ER32 on my 7x10 HB lathe & love it. I'm going to holler at Tallgrass Tools and ask them about the ER40 so I can build one for my 11" Logan. I still haven't got the Logan put back together, in the middle of rebuilding it. but looking forward to using it for a lot of projects. I do Love the ER collets though!
I'm not much of a machinist yet, but I'm learning, I put an ER16 collet set up on my Taig lathe and loved it so much I put a ER32 on my 7x10 HB lathe & love it. I'm going to holler at Tallgrass Tools and ask them about the ER40 so I can build one for my 11" Logan. I still haven't got the Logan put back together, in the middle of rebuilding it. but looking forward to using it for a lot of projects. I do Love the ER collets though! Now that we're talking about collets, let me bounce something off of yall, I'm wanting to get an indexing head to do some stuff on the milling machine and I was looking at the kind that use the 5C collets. Is there a better way? After hearing yall talk about the 5C collets I'm wondering if you'd be better off putting a ER set up on a rotary table that uses the indexing stuff.
Hi Tigtorch,
Should you decide to go with ER collets, for a few dollars an extra MT ER chuck for the tailstock of your lathe is one of the best investments you can make, I wouldn't hold a center drill or reamer any other way.
G'Day Earl,
I also have a mill without a spindle brake and use ER32 collets without any problems, when changing cutting tools I put a rag on the table in case the cutter drops, hold the chuck body with a 36mm open end wrench and use the "C" wrench to loosen the nut.
Regards,
Martin
Should you decide to go with ER collets, for a few dollars an extra MT ER chuck for the tailstock of your lathe is one of the best investments you can make, I wouldn't hold a center drill or reamer any other way.
G'Day Earl,
I also have a mill without a spindle brake and use ER32 collets without any problems, when changing cutting tools I put a rag on the table in case the cutter drops, hold the chuck body with a 36mm open end wrench and use the "C" wrench to loosen the nut.
Regards,
Martin
Do you need ER collets? I wasn't sure but now I wouldn't be without them. I have an old Myford S7 Lathe (I suspect there may be very few of them in the USA) and used ER25's in the lathe for holding milling cutters [when when I used to mill in the lathe] and also in place of the 3 jaw when turning small dia. stock.
Although my ER chuck is an inexpensive one, it's still far more accurate work-holding than I could ever have achieved with the old chuck holding small diameter stock.
When I bought my small mill I quickly followed up with a ER25/MT3 collet chuck for the mill to replace the odd-ball collet chuck (non ER) that came with the mill. Now the collets are all inter-changable. And, as I think someone else remarked, I can also use it in the tailstock for centre-drilling, etc.
In summary, I think you'll find it a good investment, when you buy the collet chuck just buy a few collets then follow up with other sizes as and when the occasion arises.
Although my ER chuck is an inexpensive one, it's still far more accurate work-holding than I could ever have achieved with the old chuck holding small diameter stock.
When I bought my small mill I quickly followed up with a ER25/MT3 collet chuck for the mill to replace the odd-ball collet chuck (non ER) that came with the mill. Now the collets are all inter-changable. And, as I think someone else remarked, I can also use it in the tailstock for centre-drilling, etc.
In summary, I think you'll find it a good investment, when you buy the collet chuck just buy a few collets then follow up with other sizes as and when the occasion arises.