KGD recommended cutting conditions (PM / PH chipbreaker)

Recommended insert grades f (mm/rev)

( Vc: m/min) PM PH

Workpiece material MEGACOAT MEGACOAT Edge width CW (mm) NANO

PR1535PR1225PR12152 ~ 42 3 ~ 4
Carbon steel
80 ~ 20080 ~ 200100 ~ 200
0.08 ~ 0.180.10 ~ 0.250.15 ~ 0.28
Alloy steel
70 ~ 18070 ~ 18080 ~ 180
Stainless steel0.06 ~ 0.120.05 ~ 0.120.08 ~ 0.15
60 ~ 15060 ~ 15060 ~ 150
Cast iron--0.08 ~ 0.180.10 ~ 0.250.15 ~ 0.28

100 ~ 200 ★: 1st Recommendation ✩: 2nd Recommendation

HH

Example of feed [ In the graph indicates the most recommended value of feed (f)]

࣭PM chipbreaker [ Workpiece material: S50C ][ Workpiece material: S50C ]

2~4

0.1 0.2 0.3

Feed rate f (mm/rev) ࣭PH chipbreaker [ Workpiece material: S50C ][ Workpiece material: S50C ] 3~4 2

0.1 0.2 0.3

Feed rate f (mm/rev)

Caution (Cut-off)

1. Be sure to perform wet processing. Apply enough coolant to the cutting edge. 2. Keep a constant rate during processing so that optimum product life will be achieved. 3. Cut-off as close to the chuck as possible. 4. Lower the feed rate to 1/2 to 1/3 at the near center to prevent impact caused by machining.