4PC CAT40 ER40 Chuck
Gage or projection length of ER40 is 2.75".
Accuracy in couple tenth chuck and collets together
11PC ER40 Collets by 16th: 1/8, 3/16, 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, 1, 1-1/16, 1-1/8
Fully ground flange and V-groove — easy on tool changers for less spindle and
V-Flange CAT40 is production balanced to high speed spindle turning and meet standard industrial needs
Even though all sellers are saying balance, but it's not true,
few smart guy copy few words from seller A, and another words from seller B to
make up their description or over describe the item. It's easy to find out
balance or not, set spindle speed higher, and you'll see the difference, could
be couple thousands, true balanced holder works the same way at low and high
speed even up 20K RPM, however, poor or not evenly balanced only works normally
under low spindle speed.
Hardened and ground to ensure maximum accuracy
Through spindle coolant capability from pull stud to collets
Decent quality at reasonable price