Speed and Feed Charts

parameter settings.

THINGS TO CONSIDER WITH SPEED & FEED CHARTS

At least a 40 taper style machine
Rigidity of setup
Stability of machine and software capabilities
Length of tool out of spindle
Steel shank tool verses carbide shank

These are suggested conservative parameters adjustments may be required based on individual machine type, strength, set up,and programming requirements.

SPEED AND FEED CHART FOR SO AND HBS STYLE OF BALL NOSE INSERTS.
(DIE AND MOLD STEELS 1018,4340,P-20,H-13,A2,S7,DUCTILE AND GRAY CAST IRON)

Diameter	RPM	DOC	Stepover	Feed Rate
0.375	6000	0.010	0.015	60 ipm
0.500	4500	0.010	0.020	70 ipm
0.625	4000	0.015	0.020	70 ipm
0.750	3500	0.020	0.025	75 ipm
1.000	3200	0.025	0.030	80 ipm
1.250	2800	0.030	0.040	80 ipm

SPEED AND FEED CHART FOR BL, WO, AND SW STYLE OF INSERTS
(DIE AND MOLD STEELS 1018,4340,P-20, H-13, A2, S7, DUCTILE AND GRAY CAST IRON)

Diameter	RPM	DOC	Stepover	Feed Rate
0.375	5500	0.010	0.015	40 ipm
0.500	4200	0.010	0.020	40 ipm
0.625	3800	0.015	0.020	50 ipm
0.750	3500	0.020	0.025	60 ipm
1.000	3000	0.025	0.030	65 ipm
1.250	2600	0.030	0.040	70 ipm

SO AND HBS STYLE IN HARDENED STEEL, STAINLESS STEEL, AND HIGH-TEMP ALLOYS

Diameter	RPM	DOC	Stepover	Feed Rate
0.375	6000	0.005-0.008	0.010	40 ipm
0.500	5000	0.008	0.010	50 ipm
0.625	4500	0.010	0.015	50 ipm
0.750	4500	0.015	0.015	60 ipm
1.000	4000	0.020	0.020	60 ipm
1.250	3600	0.025	0.025	60 ipm

BL, WO, AND SW STYLE OF INSERTS CUTTING HARDENED STEEL, STAINLESS STEEL, AND HIGH-TEMP ALLOYS

Diameter	RPM	DOC	Stepover	Feed Rate
0.375	5000	0.005-0.007	0.010	35 ipm
0.500	4200	0.005-0.008	0.010	35 ipm
0.625	4000	0.010	0.010	40 ipm
0.750	4000	0.012	0.015	50 ipm
1.000	3600	0.015	0.020	50 ipm
1.250	3200	0.020	0.025	55 ipm

These are only conservative starting points. Adjust your parameters to get the best finish and life of insert you desire.

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