Boring: Positive insert (Cutting diameter under 10 mm)

ISO Corner-R Lower limit - Recommendation - Upper limit

Workpiece material Hardness Cutting range Applications Chipbreaker Insert grades

classification(RE)Vc (m/min)ap (mm)f (mm/rev)
FinishingContinuousEZB-F0.0530 - 70 - 1100.05 - 0.1 - 0.20.01 - 0.04 - 0.07

Interruption PR1225

Solid type EZB-H 0.15 30 - 60 - 90 0.05 - 0.1 - 0.2 0.03 - 0.07 - 0.1

Low-carbon steel HB

Continuous 0.1 40 - 80 - 120 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07

≤ Finishing F PR1725

Low-carbon alloy Interruption 0.2 40 - 70 - 100 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1

300

Continuous 0.1 40 - 80 - 120 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07

Finishing-Medium CF PR1725

Interruption0.240 - 70 - 1000.05 - 0.15 - 0.250.03 - 0.07 - 0.1
FinishingContinuousEZB-F0.0530 - 70 - 1100.05 - 0.1 - 0.20.01 - 0.04 - 0.07

Interruption PR1225

Solid type EZB-H 0.15 30 - 60 - 90 0.05 - 0.1 - 0.2 0.03 - 0.07 - 0.1

Medium-carbon steel HB

Continuous 0.1 40 - 80 - 120 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07

P * ≤ Finishing F PR1725

Medium-carbon alloy Interruption 0.2 40 - 70 - 120 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1

300

Continuous 0.1 40 - 80 - 120 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07

Finishing-Medium CF PR1725

Interruption0.240 - 70 - 1000.05 - 0.15 - 0.250.03 - 0.07 - 0.1
FinishingContinuousEZB-F0.0530 - 70 - 1100.05 - 0.1 - 0.20.01 - 0.04 - 0.07

Interruption PR1225

Solid type EZB-H 0.15 30 - 60 - 90 0.05 - 0.1 - 0.2 0.03 - 0.07 - 0.1 FF

HB

Continuous 0.1 40 - 80 - 120 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07

High-carbon alloy ≤ Finishing F PR1725

Interruption 0.2 40 - 70 - 100 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1

280

Continuous 0.1 40 - 80 - 120 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07

Finishing-Medium CF PR1725

Interruption0.240 - 70 - 1000.05 - 0.15 - 0.250.03 - 0.07 - 0.1
FinishingContinuousEZB-F0.0530 - 60 - 800.05 - 0.1 - 0.20.01 - 0.03 - 0.05

Interruption PR1225

Solid type EZB-H 0.15 30 - 60 - 80 0.05 - 0.1 - 0.2 0.02 - 0.05 - 0.07

HB

Continuous PR1225 0.1 30 - 60 - 80 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07

Stainless steel ≤ Finishing F

Interruption PR1535 0.2 30 - 60 - 80 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1

220

Continuous PR1225 0.1 30 - 60 - 80 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07

Finishing-Medium CF

Interruption PR1535 0.2 30 - 60 - 80 0.05 - 0.15 - 0.25 0.03 - 0.07 - 0.1

M

Finishing Continuous EZB-F 0.05 30 - 60 - 80 0.05 - 0.1 - 0.2 0.01 - 0.03 - 0.05

Interruption PR1225

Solid type EZB-H 0.15 30 - 60 - 80 0.05 - 0.1 - 0.2 0.02 - 0.05 - 0.07

HB

Continuous PR1225 0.1 30 - 60 - 80 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07

Stainless steel ≤ Finishing F

Interruption PR1535 0.2 30 - 60 - 80 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1

300

Continuous PR1225 0.1 30 - 60 - 80 0.05 - 0.15 - 0.25 0.03 - 0.05 - 0.07

Finishing-Medium CF

InterruptionPR15350.230 - 60 - 800.05 - 0.15 - 0.250.03 - 0.07 - 0.1
FinishingContinuous(VNB)0.0330 - 60 - 1000.05 - 0.08 - 0.10.03 - 0.05 - 0.07

KW10

Solid typeInterruption(VNB-NB)0.230 - 60 - 1000.05 - 0.1 - 0.150.03 - 0.07 - 0.1
HB0.130 - 60 - 1000.05 - 0.08 - 0.10.03 - 0.05 - 0.07

Continuous

Gray cast iron ≤ Finishing F KW10

Interruption 0.2 30 - 60 - 80 0.05 - 0.1 - 0.15 0.03 - 0.07 - 0.1

250

Continuous Without 0.2 30 - 60 - 100 0.1 - 0.2 - 0.3 0.03 - 0.05 - 0.07

Finishing-Medium KW10

Interruption chipbreaker 0.4 30 - 60 - 80 0.1 - 0.2 - 0.3 0.03 - 0.07 - 0.1

K

Finishing Continuous (VNB) 0.03 30 - 60 - 80 0.05 - 0.08 - 0.1 0.03 - 0.05 - 0.07

KW10

Solid typeInterruption(VNB-NB)0.230 - 60 - 800.05 - 0.1 - 0.150.03 - 0.07 - 0.1
HB0.05 - 0.08 - 0.10.03 - 0.05 - 0.07
Continuous0.130 - 60 - 80
Nodular cast ironFinishingF,UKW10
Interruption0.230 - 60 - 800.05 - 0.1 - 0.150.03 - 0.07 - 0.1

270

Continuous Without 0.2 30 - 60 - 100 0.1 - 0.2 - 0.3 0.03 - 0.05 - 0.07

Finishing-Medium KW10

Interruption chipbreaker 0.4 30 - 60 - 80 0.1 - 0.2 - 0.3 0.03 - 0.07 - 0.1

High Speed Finishing Without

Continuous KPD001 0.05 150 - 200 - 300 0.05 - 0.1 - 0.3 0.05 - 0.1 - 0.15

Non-ferrous metals Rainbow surface gloss chipbreaker

Copper alloy HB Finishing

Continuous 0.1 100 - 150 - 200 0.05 - 0.3 - 0.5 0.03 - 0.1 - 0.2

N ≤ F, U PDL025

Aluminum Long tool life Interruption 0.2 100 - 150 - 200 0.05 - 0.3 - 0.5 0.03 - 0.1 - 0.2

100

Aluminum alloys Continuous 0.1 100 - 150 - 200 0.05 - 0.3 - 0.5 0.03 - 0.1 - 0.2

Finishing Interruption F, U KW10

0.2100 - 150 - 2000.05 - 0.3 - 0.50.03 - 0.1 - 0.2
Precision FinishingContinuousWithout0.1100 - 120 - 1500.05 - 0.1 - 0.30.03 - 0.07 - 0.1

HB KPD001

Rainbow surface gloss Interruption chipbreaker 0.2 70 - 100 - 120 0.05 - 0.1 - 0.3 0.03 - 0.07 - 0.1

Titanium alloys ≤

400 Continuous 0.1 20 - 40 - 60 0.05 - 0.2 - 0.5 0.03 - 0.1 - 0.2

Finishing F, U KW10

Interruption 0.2 20 - 40 - 60 0.05 - 0.2 - 0.5 0.03 - 0.1 - 0.2

S

Finishing Continuous 0.2 10 - 30 - 50 0.05 - 0.1 - 0.3 0.03 - 0.05 - 0.1

HB Interruption (VNB) KW10

Solid type 0.2 10 - 30 - 50 0.05 - 0.1 - 0.3 0.03 - 0.05 - 0.08

Heat-resistant alloys ≤

350 Continuous 0.2 10 - 30 - 50 0.05 - 0.2 - 0.4 0.03 - 0.05 - 0.1

Finishing F,U KW10

Interruption0.210 - 30 - 500.05 - 0.2 - 0.40.03 - 0.05 - 0.1
40~50Continuous0.230 - 50 - 700.05 - 0.1 - 0.40.01 - 0.02 - 0.05

Finishing (VNB) PR930

Hardened steel HRC Interruption 0.2 30 - 50 - 70 0.05 - 0.1 - 0.2 0.01 - 0.02 - 0.03

H

Hard materials 45~68 Continuous ME 0.2 60 - 100 - 140 0.05 - 0.1 - 0.2 0.02 - 0.05 - 0.1

Finishing Interruption KBN05M

HRC MES 0.4 60 - 80 - 120 0.05 - 0.1 - 0.2 0.02 - 0.05 - 0.1

* Please use it with PR1725 set to Vc = 150 m/min or below, for machining of free-cutting steel such as small size SUM. For ap and f, refer to specs for low carbon steels.

  • ap indicates radius