Page 309 - Tungaloy Catalog

TAC Internal Toolholders

Improved tool life

By supplying the optimum level of cutting fluid, flank wear
& rake face wear are suppressed, considerably improving
tool life. Competitor's boring bar

0.20
Corner flank wear width VBc (mm) 0.15 Toolholder : A16Q-STUPR1103-D180
Stream Jet Bar

5 0.05 Work material : 1045 SAE (220HB)
: TPMT110304-PS (GT730)
Insert
0.10
: Boring (1.18 - 2.00 in)
Cutting speed
: Vc = 400
TAC Internal Toolholders d Marking specifications 25 30 Feed : f = .008 in/REV
: ap = .020 in
Depth of cut
Cutting fluid
: Wet
10
20
15
0
5
Cutting time (min)
“Easy to use”
Tool holder Cat. No.
The minimum bore diameter is
indicated in the Cat. No. The three-
digit number at the end of the text
indicates the minimum bore diameter.
(Example)-D140 → 14.0 mm

Applicable clamping screw Scale of overhang length Applicable insert Cat. No.
Cat. No. (Positive type only) Can identify the insert size & relief
If screw is missing, this detail simplifies Useful for easy setting of the angle at a glance. Simplified tool
locating a replacement with Cat. No. toolholder. management.

Carbide shank type

Combination of the highly rigid carbide shank &
the head geometry can increase the tool rigidity &
improve chip evacuation.

d Guide to L/D
Steel shank Carbide shank

L/D ≤ 3 L/D ≤ 5
(Note) L : Overhang length, D: Shank diameter

d For precision boring
The increased rigidity suppresses chatter, producing
excellent surface finishes.
Excellent chip evacuation minimizes damage to the
surface caused by chip re-cutting. This further improves
surface finish.

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