HDC COLLET CHUCKS / HDC-A0 pages

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