NT’s HDC collet chucks uses a symmetrical ground design to produce the best all around chuck available. HDC collet chucks symmetrical design, and wide chucking range (5 different size chucking series) make it rigid enough to mill and drill with. Coolant through the tool applications can also be addressed with the addition of a FDC coolant collet. HDC A High precision type Tool length adjustment Preset screw is included in the holder. Press down on the tool shank toward the preset screw and rotate the tool for length adjustment. (Clockwise) Tool length shortened (Counterclockwise)Tool length extended Preset screw Holder FDC Collets When the desired tool projection length is reached, tighten the nut with a special spanner wrench (sold separately) securely. Holder size HDC Spanner size 07A 09A 12A 16A 22A S-0 S-1L S-3L S-4L S-5L Recommended torque 8-11 lbf-ft 22-26 lbf-ft 26-30 lbf-ft 30-33 lbf-ft 41-44 lbf-ft (89-133 lbf-in) (266-310 lbf-in) (310-354 lbf-in) (354-398 lbf-in) (487-531 lbf-in) (1)High precision trio Coolant supply + + High precision holder High precision collet = High precision Completely sealed by short slotting High precision Nut L (2)High precision collet d Grade AA A 4d Cutter with oil hole FDC-OH type 4d R.P.M. Coolant Pressure 8,000rpm 870psi No damage to ball bearings from coolant leakage (3)High balance HDC is designed for high balance quality, high-speedcutting is possible. Effective coolant flow thru 2 coolant nozzles (grooves) L L Completely sealed by short slotting Cutter without oil hole FDC - C type No damage to ball bearings from coolant leakage R.P.M. Coolant Pressure 8,000rpm 870psi

High-Precision Collet Chucks

High-Precision Collet Chucks ST/HDC • A Straight Shank Type