View Full Version : What does ER stand for in "ER11 collet"?
04-09-2012, 10:12 AM
as title....googled but not found the answer.
URL reference would be nice.
04-09-2012, 10:38 AM
Extended Range me thinks.
04-09-2012, 03:21 PM
Well from what I can find out about ER from Rego-Fix (the company who patented them in 1973) it was simply the mark they used when setting up that type of collet. It was later moved over to a DIN number 6499 (which nobody pretty much uses including Rego-Fix). They claim that they product has <3um of TIR (which considering the cost of their parts I hope so). Hope that helps.
06-09-2012, 01:36 PM
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