3/4″ X 1.38″ ER20 STRAIGHT SHANK COLLET CHUCK EXTENSION HOLDER
| MODEL | ER20 COLLET CHUCK | RUN OUT (TIR) | 0.0002″ | FLANGE DIAMETER | 1.1″ |
| HOLDER TYPE | ER COLLET CHUCK | CLAMPING RANGE | Â 3/16-1/2″ | CLAMPING SIZE | ER20 |
| SHANK TYPE | STRAIGHT TOOL HOLDER | DRAWBAR THREAD | NO | COLLET NUT | ER20 UM |
| BALANCE | MAX 12,000RPM | SHANK DIAMETER | 3/4 | COLOR | oxide black |
| OVERALL LENGTH | 2.88″ | SHANK LENGTH | 1.38″ | ATC GROOVE | Yes |
STRAIGHT SHANK COLLET CHUCK EXTENSION HOLDER
For all ER20 Collets.
The flange is 1.5″ groove  for TTS Tormach machine.
Made from alloy steel and hardness is HRC55.
Coolant thru all the shank with M16 drawbar thread.
Nut included.