Technical data sheet
MTB4300200

Drilling › Centre drills › MTB43

MTB4300200

118° solid carbide micro centre drill for precision pre-drilling, coated

Dimensions

d1+/-0.03d2h6l1+/-0.2
2.02.028.0

Properties

CoatingYes
Coolant holesNo
Point angle118°
Helix angle25°
Flutes2
StandardTUSA
Cut directionRight-hand

Cutting parameters

MaterialDescriptionMachinabilityVcm/minfnmm/rev
P.0Long chipping Low Carbon SteelsRecommended35-500.03-0.05
P.1Short chipping Low Carbon SteelsRecommended30-500.03-0.05
P.2Medium and High Carbon SteelsRecommended30-500.03-0.05
P.3Alloy Steels, Tool Steels (N/mm² 600-850)Recommended30-450.025-0.045
P.4Alloy Steels, Tool Steels (N/mm² 850-1400)Recommended25-400.02-0.04
P.5Ferritic, Martensitic, PH SSRecommended20-350.02-0.035
P.6High Strength Ferritic, Martensitic, PH SSRecommended20-350.02-0.035
M.1Austenitic Stainless SteelRecommended16-300.02-0.03
M.2High Strength Austenitic SS, Cast SSRecommended16-300.02-0.03
M.3Duplex SSRecommended16-300.02-0.03
K.1Grey Cast IronPartially recommended35-500.035-0.055
K.2Low and Medium Strength CGI, Ductile IronsPartially recommended30-450.03-0.05
K.3High Strength Ductile and Austempered Ductile IronPartially recommended30-450.03-0.05
N.1Wrought AluminiumRecommended50-650.04-0.06
N.2Low Si Al Alloys and Magnesium Alloys Si<12%Recommended40-550.05-0.07
N.3High Si Al Alloys Si>12%Recommended35-500.04-0.06
N.4Copper, Brass, Zinc Based AlloysRecommended35-650.03-0.07
S.1Iron Based HRSARecommended15-250.02-0.035
S.2Co Based HRSARecommended15-250.02-0.035
S.3Ni Based HRSARecommended15-250.02-0.035
S.4Ti and Ti AlloysRecommended35-500.03-0.05
H.1Hardened Materials (HRC 44-48)Recommended15-250.02-0.03
H.2Hardened Materials (HRC 48-55)Recommended15-250.02-0.03
H.3Hardened Materials (HRC 56-60)Partially recommended20-400.002 - 0.005
O.1Thermoplastic and thermosetting materialsRecommended30-450.05-0.075