80 pcs ER32 collet set $400
- Thread starter DavidR8
- Start date
Dabbler
ersatz engineer
I agree with Tom. Collets are something that pays back to buy the best you can afford. I'd be inclined to pay a bit more and get it from a dealer where you might have some recourse should you get a defective collet or a duplicate - that is one missing size because you have a duplicate. It has happened to me.
Last edited:
darrin1200
Darrin
A newbie question here. Are there 80 different sizes of ER32?
I can find about 23 each of metric and imperial.
I can find about 23 each of metric and imperial.
Johnwa
Ultra Member
@darrin1200 I‘m wondering the same thing. You don’t even need both metric and imperial.
Tom Kitta
Ultra Member
The 80 set most likely has lots of repeats - the ER collets have in metric usually 1mm clamping range - say 12-13. BUT they can also have just one size listed and have less flexibility - I have an ER collets (in ER40) that are marked as just one size and visibly more rigid. Some smaller collets may be marked with just one size, say 1/8.
Set of 18 is usually the metric set.
Also with collets you can have some that are used and kind of "abused". This is a precision instrument - so "used" from unknown source are like a lottery.
I know most known this, but for ER you use the collet that is in its max range same or a bit bigger then the tool, i.e. for 12mm EM you use 11-12 not 12-13. For 1/2 you either use one stamped 1/2 (me) or 12-13. I.e. you want to avoid collet flexing
Set of 18 is usually the metric set.
Also with collets you can have some that are used and kind of "abused". This is a precision instrument - so "used" from unknown source are like a lottery.
I know most known this, but for ER you use the collet that is in its max range same or a bit bigger then the tool, i.e. for 12mm EM you use 11-12 not 12-13. For 1/2 you either use one stamped 1/2 (me) or 12-13. I.e. you want to avoid collet flexing