STRAIGHT SHANK COLLET HOLDERS/EXTENSIONS

RAINIER brand straight shank ER Collet holders are widely used in both mills and lathes. This is one of largest variety of straight shank holders available in the USA.

Application of Collet holders

Used as extensions in MILLING applications installed either into an endmill holder or a milling chuck. This gives is done to reach into harder to reach areas that need to be milled out and where due to clearance issues an extended nose endmill holder will not reach.

In TURNING applications they are used to hold drills, center drills, form tools etc. in an ER collet - RAINIER offers straight shank holders in various sizes with locating flats to simplify the setup process.