Page 110 - HOLE MAKING CATALOG p185-310

GUNDRILLS GDV Weldon (W) Type Cylindrical (C) Type Whistle Notch 15° (S) Type Whistle Notch (WN) Type
Shanks for SUMOGUN
Modular Gundrills with LS
Threaded Connection
THSZWS DCONMSg6

Designation THSZWS DCONMS Shank(1) LS
19.05 S 69.8
GDV56-MF16X1-I-WN.75" MF16X1 19.05 W 69.8
GDV99-MF16X1-I-W.75" MF16X1 20.00 C 50.0
MF16X1 20.00 W 50.0
GDV10-MF16X1-M-C20 MF16X1 25.40 WN 69.8
25.00 C 56.0
GDV22-MF16X1-M-W20 25.00 W 56.0
25.00 S 70.0
GDV80-MF16X1-I-WN1.00" MF16X1 25.40 W 57.9
GDV11-MF20X1-M-C25 MF20X1 25.40 S 69.8
GDV23-MF20X1-M-W25 MF20X1 31.75 W 57.9
GDV57-MF20X1-M-WN25 MF20X1 31.75 C 57.9
GDV100-MF20X1-I-W1.00" MF20X1 32.00 C 60.0
32.00 W 60.0
GDV58-MF20X1-I-WN1.00" MF20X1 40.00 C 70.0
GDV101-MF20X1-I-W1.25" MF20X1 40.00 W 70.0
GDV97-MF20X1-I-C1.25" MF20X1
GDV12-MF20X1-M-C32 MF20X1
GDV24-MF20X1-M-W32 MF20X1

GDV13-MF20X1-M-C40 MF20X1
GDV25-MF20X1-M-W40 MF20X1

(1) W-Weldon, C-Cylindrical, S-Whistle notch 15°, WN-Whistle notch

For tools, see pages: MNSNT (293)

Machining Conditions for MNSNT

SUMOGUN
Tensile Material Feed vs. Drill Diameter
Strength Hardness Group D=10-11.9 D=12-13.9 D=14-15.9 D=16-19.9 D=20-25.9
ISO
Material Condition [N/mm2] HB No. V (m/min) mm/rev
< 0.25 %C Annealed 420 125 1 80-110-140

Non-alloy >= 0.25 %C Annealed 650 190 2 80-105-130

steel and < 0.55 %C Quenched and 850 250 3 80-100-120 0.15 0.18 0.20 0.25 0.25
cast steel, tempered 0.18 0.21 0.23 0.30 0.30
750 220
free cutting >= 0.55 %C Annealed 4 70-90-110 0.21 0.24 0.27 0.35 0.35
steel Quenched and 1000 300
5 50-70-90
tempered 600 200
930 275
P Low alloy steel and cast Annealed 1000 300 6 80-100-120 0.14 0.16 0.18 0.23 0.25
steel (less than 5% of 1200 350 7 70-90-110 0.17 0.20 0.22 0.27 0.30
Quenched and 8 50-70-90 0.21 0.24 0.26 0.31 0.35
alloying elements) tempered 9 40-55-70

High alloyed steel, cast Annealed 680 200 10 50-70-90 0.12 0.15 0.18 0.20 0.22
steel, and tool steel 1100 325 0.17 0.20 0.22 0.24
Quenched and 11 40-60-80 0.14 0.20 0.23 0.25 0.27
tempered 0.17

Stainless steel Ferritic/ 680 200 12 40-55-70 0.12 0.14 0.16 0.16 0.18
and cast steel martensitic. 0.13 0.15 0.18 0.19 0.21

Martensitic 820 240 13 0.15 0.17 0.20 0.21 0.24

Ferritic/pearlitic 180 15 90-125-160

Cast iron nodular (GG) Pearlitic/ 260 16 80-110-140 0.20 0.25 0.30 0.35 0.35
K Grey cast iron (GGG) martensitic
160 17 90-135-180 0.23 0.28 0.33 0.40 0.42
Ferritic
250 18 80-110-140 0.27 0.32 0.37 0.45 0.47
Pearlitic

Malleable cast iron Ferritic 130 19 90-125-160
Pearlitic 230 20 80-110-140

Aluminum-wrought alloys Not hardenable 60 21
Hardenable
<=12% Si 100 22 90-155-220 0.25 0.30 0.35 0.40 0.45
>12% Si Not hardenable 75 23 0.28 0.33 0.38 0.45 0.50
N Aluminum- 90 24 0.32 0.37 0.42 0.50 0.57
cast alloys Hardenable
130 25 80-120-160
High
temperature

Recommended cutting data
• Mandatory use of emulsion or oil when drilling
• For the 400mm long tools please reduce the cutting speed by 20%.

294 ISCAR