• Constructed of alloy steel for long, durable service life • Hardened to RC 52–56 to avoid damaging collet chuck threads • Shiny taper with black oxide finish for the best combination of accuracy and durability • Collet seat taper T.I.R. .0002 • Collet face within .06 of nut face for maximum rigidity. • Collet can be removed with single hand. No tooling required and improved collet life • Precision ball bearing type collet races provide higher clamping forces • Through-spindle coolant capability • Parsymmetry design for high-speed operation • Plastic bumper protects spindle and holder during tool changes. Available on NMTB 40 and 50 tapers only. • Flange-entry coolant is the same as DIN Form B. Other sizes available on request
