PG vs TG collets ?

Milacron · Dec 30, 2004

Same dimensions, same capacity...both "single angle collets" ...what's the difference ?

Difference seems to be that PG types may be a bit like Rubberflex and have more range, whereas TG is more definite I.D., without range. Yea or nea ?

Milacron · Dec 30, 2004

Well, ok, since apparently everyone else is just as in the dark on this earth shattering subject as I am, I did some further investigating and called Parlec.

As it turns out, PG is simply Parlec's "we'll create the illusion that these are propriatry to us" name for TG collets. Except for perhaps one or two less or more slits, they are the same.

The RPG collets do indeed have rubber inserts, but have *less* range than the standard PG collets (.005" collapse vs .016" on standards) and exist only for the purpose of being "sealed" from coolant intrusion.

You heard it here first folks !

www.workholding.com/techcnatg100.htm

metlmunchr · Dec 30, 2004

Don, I think Erickson-Kennametal may have a trademark on the TG designation, since I've seen some others besides Parlec that refer to them as PG's. Collis calls them Precision Grip, and their equivalent of a TG100 series collet is a PG100.

Milacron · Dec 30, 2004

Make's sence Metl. So what's TG....Tommy Grip ??

earlypearl · Dec 30, 2004

Don, I remember reading somewhere that TG stands for Tremendous Grip.

TK

metlmunchr · Dec 30, 2004

Don, I remember reading somewhere that TG stands for Tremendous Grip.

Yep, I've read the same thing in the past. As goofy as that sounds, its no wonder they shortened it to TG.

Dave K · Dec 30, 2004

Metlmunchr,

I'm not so sure about the kennametal propriatorship on that tg designation. Lyndex is using those same designations.

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