DORIAN TOOL
CAT40 ER20H-2500 ER Collet Holder

Precision Balanced to 12,000 RPM

Features
• Tapers Ground to AT-3 Specifications or BETTER. Ensures precise fit with max contact surface area with machine spindle. Translates into more cutting tool life and better surface finish. • Thru Coolant Feature. Thru Hole of the toolholder allows the use of Thru Coolant Tools when used with Thru Coolant retentention knob and sealed collet. • .0001" Taper-Bore Runout Tolerance. Means more cutting tool life and better surface finish. • Made of 8620 Alloy Steel with Case Hardness of 56-60 HRC and Core Hardness of 36-40 HRC. Translates into durability and rigidity

Specs
Collet Series: ER20
Collet Range (in): .039-.511
Nose Diameter (D) (in): 1.38
Gage Length (L) (in): 2.50
MPN: 45180