Recommended cutting conditions (MEY)

fz (m/t)Recommended insertgrades (Vc: m/min)
Workpiece materialMEGACOAT
DrillingShouldering, slottingPR1225PR1210
Carbon steel0.08~0.150.05~0.25★ 120~250-
Alloy steel0.08~0.150.05~0.25★ 100~220-
Mold steel0.08~0.120.05~0.15★ 80~180-
Stainless steel0.08~0.120.05~0.15★ 120~220-
Cast iron0.05~0.200.05~0.25-★ 100~220

★: 1st Recommendation ✩: 2nd Recommendation

Caution of drilling Shape of the bottom of the drilled hole

1. Drilling conditions should be calculated as one flute line.Cutting dia.(DC)Max. hole depth (mm)Cutting dia.a (mm)Shape of the bottom
2. Use compressed air during drilling.ø1613ø16,ø170.5Cutting dia. DC
3. Carbon steel other than low carbon steel can be drilled to a depth of 0.5D without step feeding.ø17 ø20 ø2113 17 17ø20,ø210.64
For soft steel or sticky material such as stainless steel, Step feed drilling (0.5 ~ 1.0mm) is recommended.ø25 ø2622 22ø25,ø260.85a
4. For stainless steel drilling, coolant is recommended.ø3229ø32ø33112
5. Please refer to right list for maximum hole depth.ø3329,.ø16 ~ ø33
ø40 ø5036 40ø401.54Cutting dia. DC
ø501.65a
ø40, ø50

Helical milling

Vertical milling (Plunging)

Ramping Helical milling

Drilling Slotting Pocketing Ramping

Shouldering