Recommended Starting Speeds • Inch and Metric

Maximum Feed Rate Values

Material Feed Group Factor Data above is for P and K material groups. Maximum

feed rates should be adjusted by multiplying max feed rateM0.8
values by following factors for shown material groups.N1.2

S 0.8 H 0.5

Material WU25PT

Group Inch Metric

0–1360740880110225270
2360520880110160260
P3360410800110125235
42002905406090160
5320530680100160210
628040060085120185
130055080090170245
M230050080090150245
330045070090140210
1320480760100145225
K224040056070120170
31602804005085120
1–240014402560120440780
3
N43209601600100290490
524044064070135195
6320560800100170245
12512520084060
22510025083075
S12540
3502501575
425175350850110

NOTE: FIRST choice starting speeds are in bold type. As the average chip thickness increases, the speed should be decreased.