Page 926 - YG 2019

X-POWER X-POWER
END MILLS RECOMMENDED CUTTING CONDITIONS END MILLS RECOMMENDED CUTTING CONDITIONS

CARBIDE, 2 FLUTE BALL NOSE with PENCIL NECK CARBIDE, 2 FLUTE BALL NOSE - MMC

EM979 SERIES RECOMMENDED
ae
■ NORMAL SPEED CUTTING
P ap CONDITIONS
MATERIAL ALLOY STEELS
HEAT RESISTANT HARDENED STEELS HARDENED STEELS
STEELS
HARDNESS HRc30 ~ HRc40 HRc45 ~ HRc50 HRc50 ~ HRc55
STRENGTH 1000 ~ 1250N/mm 2 1250 ~ 1750N/mm 2 1750 ~ 2000N/mm 2
DIAMETER RPM FEED RPM FEED RPM FEED ▶ ap=0.02×D1
▶ ae=0.05×D1
R3/32 × 3/16 4670 14.5 6000 27.7 5760 26.8
R1/8 × 1/4 4030 15.8 5520 29.0 5200 27.7
R5/32 × 5/16 2830 16.7 4480 26.5 4240 25.2
R3/16 × 3/8 2420 17.9 3880 25.2 3720 24.2
R1/4 × 1/2 1880 16.7 3480 25.2 3320 24.2
EM084, EM096, EM669, EM863 SERIES
ap: D3/16~D1/4 =.008″ ap: D3/16~D5/16 = .010″ ap
D5/16~D1/2 =.012″ D3/8~D1/2 = .012″ ■ NORMAL SPEED
ae: 0.2×D ae: 0.1×D
ae P
RPM = rev./min. MATERIAL NON-ALLOYED STEELS ALLOYED STEELS
FEED = inch/min. ALLOY STEELS HEAT RESISTANT HARDENED STEELS
CAST IRON STEELS
HARDNESS ~HRc30 HRc30 ~ HRc40 HRc45 ~ HRc65
STRENGTH ~1000N/mm 2 1000 ~ 1250N/mm 2 1500N/mm 2
DIAMETER RPM FEED RPM FEED RPM FEED
R1/16 × 1/8 35000 110.2 33000 102.4 12000 35.4
R5/64 × 5/32 26000 90.6 25000 86.6 9000 31.5
■ HIGH SPEED R3/32 × 3/16 21000 82.7 20000 78.7 7000 27.6
P R1/8 × 1/4 17000 74.8 16000 70.9 6000 25.6
MATERIAL ALLOY STEELS R5/32 × 5/16 13000 66.9 12000 63.0 4500 21.7
HEAT RESISTANT HARDENED STEELS HARDENED STEELS R3/16 × 3/8 10500 57.1 10000 55.1 3500 19.7
STEELS R1/4 × 1/2 9000 55.1 8000 51.2 3000 17.7
HARDNESS ~ HRc45 HRc45 ~ HRc50 HRc50 ~ HRc55 R5/16 × 5/8 6000 47.2 5500 43.3 2000 15.8
STRENGTH 1500N/mm 2 1250 ~ 1750N/mm 2 1750 ~ 2000N/mm 2 RPM = rev./min.
DIAMETER RPM FEED RPM FEED RPM FEED FEED = inch/min.
R3/32 × 3/16 13440 45.4 6000 41.6 5760 39.4 ■ HIGH SPEED
R1/8 × 1/4 13440 58.2 5520 44.1 5200 42.5 P
R5/32 × 5/16 10080 71.5 4480 39.4 4240 36.2 MATERIAL NON-ALLOYED STEELS ALLOYED STEELS
R3/16 × 3/8 8740 76.9 3880 36.3 3720 34.6 ALLOY STEELS HEAT RESISTANT HARDENED STEELS
R1/4 × 1/2 6720 66.2 3480 35.6 3320 33.0 CAST IRON STEELS
HARDNESS ~HRc30 HRc30 ~ HRc40 HRc45 ~ HRc65
ap: D3/16~D1/4 =.008″ ap: D3/16~D5/16 = .010″ ap STRENGTH ~1000N/mm 2 1000 ~ 1250N/mm 2 1500N/mm 2
D5/16~D1/2 =.012″ D3/8~D1/2 = .012″ DIAMETER RPM FEED RPM FEED RPM FEED
ae: 0.05×D ae: 0.05×D R1/16 × 1/8 47000 145.7 44000 137.8 17000 55.1
ae R5/64 × 5/32 35000 126.0 33000 118.1 13000 47.2
RPM = rev./min. R3/32 × 3/16 28000 110.2 27000 102.4 10000 43.3
FEED = inch/min. R1/8 × 1/4 23000 102.4 22000 94.5 8000 37.4
R5/32 × 5/16 18000 90.6 17000 82.7 6000 33.5
R3/16 × 3/8 14000 78.7 13000 74.8 5000 29.5
R1/4 × 1/2 12000 70.9 11000 70.9 4000 27.6
R5/16 × 5/8 9000 63.0 8000 59.1 3300 23.6
RPM = rev./min.
FEED = inch/min.

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