Burnerd Multi-Size Lever operated Collet Chuck

[6ply]

Another example for @Agroshield , showing it has a range, not just a nominal size.

 

[6ply]

Unfortunately, it is not the correct type for my chuck.

I think I need EC type collets.

Rotagrip sells them.

https://www.rotagriponline.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=37&category_id=24&option=com_virtuemart&Itemid=29

View attachment 504826

However, I need something MUCH cheaper priced than what they sell for new.

Yes, sadly not compatible. They definitely aren't cheap new.

 

[6ply]

I am looking for some for my big Holbrook D1-8 fitting.
I get confused with all the different types. What is the type called with the springs and sliding fingers inside?
I think D would be the best size although I could probably use an E size collet as well.

@fizzy do you already have a collet that fits? Post or message a picture and we can compare with the ones I've got.

Or if anyone has a chuck they'd like to sell me...

 

[daedalusminos]

Unfortunately, it is not the correct type for my chuck.

I think I need EC type collets.

Rotagrip sells them.

https://www.rotagriponline.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=37&category_id=24&option=com_virtuemart&Itemid=29

View attachment 504826

However, I need something MUCH cheaper priced than what they sell for new.

You can pick them up new and lightly used on eBay - I think I paid £60 for a new old stock and then approx £13ea for these:

 

[Smouser]

You can pick them up new and lightly used on eBay - I think I paid £60 for a new old stock and then approx £13ea for these:

View attachment 504838

Nice!

How do you like them?

I suppose you have experience with other collets (ER type).

How do they compare?
Are the Burnerd ones your 'go to' collets?

 

[Milkybars]

I have a (KC) D1-3 collet chuck and selection of the collets. Been holding out for a D1-4 to appear for reasonable money

 

[6ply]

I have a (KC) D1-3 collet chuck and selection of the collets. Been holding out for a D1-4 to appear for reasonable money

What's a KC?

 

[6ply]

Ignore that question. Just googled it. Has a key, not lever operated.

 

[Martin-Sy]

Here's mine with the bed-plate for the previous owners lathe.

Sorry the pics are not very sharp.

 

[6ply]

@Martin-Sy so that's a multi-size whereas my collets are multi-bore. Easy to get the names mixed up.

Lc = lever operated
KC = key operated

... If I'm not mistaken after a quick Google.

 

[6ply]

Do the lever versions normally use a bed attachment? I thought I had seen some mounted onto the headstock before. But I like the bed version.

 

[Martin-Sy]

Do the lever versions normally use a bed attachment?

The ones I've seen used the bed attachment, but it could be either.
The open/close lever position may not be very convenient though.

 

[daedalusminos]

Nice!

How do you like them?

I suppose you have experience with other collets (ER type).

How do they compare?
Are the Burnerd ones your 'go to' collets?

They're brilliant each collet probably has a larger range than ER's of a similar capacity....if there is anything similar, and the lever operation makes opening and closing faster.

The small EC2 size is obviously subject to damage. I'm guessing if you haven't got enough material engaged and it comes loose it will tend to chip the jaws - the set that came with my lathe had 3 of that size with damaged jaws. I bought this off eBay to replace:

I do find swapping between collets a bit of a faff though - the front ring can be tricky to re-install, but that's a minor inconvenience.