NMTB 30 ER20 ER Collet Chuck Tool Holder

SKU 202-1414

NMTB 30 ER20 ER Collet Chuck Tool Holder

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SKU 202-1414
Tool Holder Category Collet Chuck
shank size NMTB 30
projection length 2.76
drawbar thread size 1/2x13UNC
Dual Contact Tool Holder No
collet series ER20
collet chuck style standard
collet nut diameter 28mm
Full Details

Product Spotlight

  • Reduced nose diameter under the flange to allow compatibility to quick change system

  • Taper ground to AT3 or better accuracy standard for maximum contact with spindle

  • Runout is less than 0.0002" from taper to end mill pocket
  • Made of alloy steel and hardened to HRc 58 and all critical surface is precision ground


  • Internal set screw is included and can be used as a stopping pin to prevent end mill or drill from sliding backwards while performing heavy cutting
  • Each holder comes with a lab certificate on its taper accuracy and runout measurement
  • In a generic standard ER collet nut, an internal ring is off-centered so that an ER collet can be easily snapped into it and holds the ER collet in place.  To minimize this off-centering, SHARS ER collet nut is optimized to distribute the flat sides' area to off-set the off-center