Series 55, 55CRAeAp AeVcDiameter (D (inch)1)
FractionalHardnessAe x D1Ap x D1(sfm)1/81/43/81/25/83/41
Profile385RPM11766588339222941235319611471
CARBON STEELS≤ 0.25≤ 1.5(308-462)Fz0.00040.00090.00170.00230.00290.00280.0032
1018, 1040, 1080, 1090 10L50 1140≤ 275 Bhn orFeed (ipm)20.626.533.333.834.127.523.5
, , , 1212, 12L15, 1525, 1536≤ 28 HRcHSM630RPM19253962664184813385132092407
≤ 0.05≤ 2(504-756)Fz0.00070.00180.00340.00460.00570.00550.0064
PFeed (ipm)67.486.6109.1110.7109.788.277.0
Pfil325RPM9932496633112483198616551242
roe≤ 0.25≤ 1.5Fz0.00030.00070.00130.00170.00220.00210.0024
ALLOY STEELS 4140, 4150, 4320,≤ 375 Bhn or(260-390)Feed (ipm)12.917.421.521.121.917.414.9
5120, 5150, 8630, 86L20, 50100≤ 40 HRcHSM530RPM16197809853994049323926992025
≤ 0.05≤ 22Fz0.00050.00140.00260.00340.00430.00410.0048
(44-636)Feed (ipm)42.156.770.268.869.655.348.6
Pfil175RPM53482674178313371070891669
roe≤ 0.25≤ 1.5140210Fz0.00020.00050.00100.00130.00160.00170.0018
TOOL STEELS≤ 375 Bhn(-)Feed (ipm)5.36.78.98.78.67.66.0
H A2, D2, H13, L2, M2, P20, S7, T15, W2or ≤ 40 HRcHSM290RPM8862443129542216177214771108
≤ 0.05≤ 2Fz0.00040.00100.00190.00250.00320.00330.0035
(232-348)Feed (ipm)17.722.228.127.728.424.419.4
Profile470RPM14363718247883591287323941795
CAST IRONS≤ 0.25≤ 1.5Fz0.00040.00090.00170.00230.00290.00300.0032
(LOW & MEDIUM ALLOY≤ 220 Bhn(376-564)Feed (ipm)25.132.340.741.341.735.928.7
) Gray, Malleable, Dilor ≤ 19 HRcHSM705RPM215451077271825386430935912693
ucte≤ 0.05≤ 2Fz0.00070.00180.00340.00460.00570.00590.0064
K(564-846)Feed (ipm)75.497.0122.1123.9122.8105.986.2
Pfil360RPM11002550136672750220018341375
roe≤ 0.25≤ 1.5(288432)Fz0.00030.00070.00130.00170.00220.00230.0024
CAST IRONS (HIGH ALLOY)≤ 260 Bhn-Feed (ipm)14.319.323.823.424.221.116.5
Gray, Malleable, Ductileor ≤ 26 HRcHSM540RPM16502825155014126330027502063
≤ 0.05≤ 2Fz0.00050.00140.00260.00340.00430.00440.0048
(432-648)Feed (ipm)42.957.871.570.171.060.549.5
Profile370RPM11307565437692827226118851413
≤ 0.25≤ 1.5Fz0.00030.00070.00130.00170.00220.00230.0024
STAINLESS STEELS (FREE MACHINING)≤ 275 Bhn(296-444)Feed (ipm)14.719.824.524.024.921.717.0
M 303, 416, 420F, 430F, 440For ≤ 28 HRcHSM560RPM17114855757054278342328522139
≤ 0.05≤ 2Fz0.00050.00140.00260.00340.00430.00440.0048
(448-672)Feed (ipm)44.559.974.272.773.662.751.3

continued on next page