Page 192 - UNION

part. Technical DaTa INch Technical DaTa INch part.
B B

Zr506(8)a - high Speed cutting db512, db502, db522, db312 - general cutting

endmill CARBON STEELS ALLOY STEELS NON-ALLOYED STEELS ALLOY STEELS endmill
& MATERIAL ALLOY STEELS · CAST IRON TOOL STEELS HARDENED STEELS MATERIAL ALLOY STEELS · CAST IRON HEAT RESISTANT STEELS HARDENED STEELS &
drill HARDNESS ~HRc 50 HRc 50~HRc 60 HRc 60~HRc 65 HARDNESS ~HRc 30 HRc 30~HRc 40 HRc 45~HRc 65 drill
STRENGTH 1750N/mm 2 1750N/mm 2 2080N/mm ~ STRENGTH ~1000N/mm 2 1000 ~1250N/mm 2 1500N/mm 2
2
DIAMETER(inch) RPM FEED RPM FEED RPM FEED DIAMETER(inch) RPM FEED RPM FEED RPM FEED
1/4 16800 240.00 8400 120.00 4200 58.00 1 16500 290 13300 230 6100 105
5/16 12600 240.00 6300 120.00 3200 58.00 1.5 16500 405 12700 310 5590 140
3/8 10000 235.00 5000 120.00 2500 58.00 2 15100 865 11200 565 4900 175
1/2 8400 200.00 4200 100.00 2100 50.00 2.5 15100 865 11200 565 4900 175
5/8 6300 150.00 3150 75.00 1600 37.00 3 13800 780 10500 530 4750 175
3/4 5000 120.00 2500 58.00 1260 30.00 4 11000 850 8800 610 4410 205
5 9600 945 7600 665 3860 205
RPM = rev. / min.
FEED = inch / min. 6 8900 1150 7200 955 3340 220
8 7500 1500 6050 1060 2590 255
1.5D 1.0D 1.0D
10 6700 1750 5300 1170 2140 260
0.05D 0.05D .008˝ 12 6150 2000 4900 1280 1840 280
16 5000 1950 3900 1220 1420 280
20 4350 1900 3400 1200 1170 290
RPM = rev. / min.
FEED = mm / min. Ae : D1 ~ D6=0.2mm Ae Ae : D1 ~ D6=0.2mm
D8 ~ D20=0.3mm D8 ~ D20=0.3mm
Ap : 0.2×D Ap Ap: 0.1×D
• Please reduce cutting speed around 20~30% above the table in case of DB522 series.

Zr506(8)a db512, db502, db522, db312 - high Speed cutting

endmill endmill
NON-ALLOYED STEELS ALLOY STEELS ALLOY STEELS NON-ALLOYED STEELS ALLOY STEELS
MATERIAL HARDENED STEELS HARDENED STEELS MATERIAL
ALLOY STEELS · CAST IRON HEAT RESISTANT STEELS HEAT RESISTANT STEELS ALLOY STEELS · CAST IRON HEAT RESISTANT STEELS
HARDNESS ~ HRc 30 HRc 30 ~ HRc 38 HRc 38 ~ HRc 45 HRc 45 ~ HRc 55 HRc 55 ~ HRc 65 HARDNESS ~ HRc45 HRc 30 ~ HRc 40
STRENGTH ~1000N/mm 2 1000~1200N/mm 2 1200~1400N/mm 2 1400~2000N/mm 2 2000N/mm 2 STRENGTH ~ 1500N/mm 2 1500 ~ 2000N/mm 2
DIAMETER(inch) RPM FEED RPM FEED RPM FEED RPM FEED RPM FEED DIAMETER(inch) RPM FEED RPM FEED
1/4 15600 91.35 12400 33.10 8400 22.45 3400 10.25 2400 7.50 1 26000 1500 26000 920
5/16 11600 91.35 9200 33.10 6300 22.45 2400 9.50 1800 7.10 1.5 24000 1600 24000 990
3/8 9200 91.35 7600 33.10 5100 22.45 2000 11.40 1300 7.50 2 22000 1700 22000 1080
1/2 8000 94.50 6000 31.50 4200 22.45 1680 10.25 1200 7.50 2.5 22000 2000 20000 1130
5/8 6000 94.50 4800 29.90 3300 20.05 1200 6.30 800 4.35 3 22000 2300 17800 1200
3/4 5200 91.35 4400 28.35 2700 16.55 1100 5.90 700 3.95 4 22000 3350 14300 1300
1 4800 85.05 3600 22.05 2400 14.15 1000 5.90 660 3.95 5 22000 4150 12600 1380
drill drill
6 22000 4600 11000 1440
8 17500 4600 8800 1440
10 14700 4450 7350 1380
12 12800 4450 6400 1330
16 10000 4000 5000 1150
20 8350 3650 4150 1060
RPM = rev. / min.
FEED = mm / min. Ae : D1 ~ D6=0.2mm Ae
D8 ~ D20=0.3mm
Ap : 0.2×D Ap

• Please reduce cutting speed around 20~30% above the table in case of DB522 series.

94 Union Materials cUttinG tools 95