"HOG" - Speeds and Feeds
Parameter
Formulas
Cutting Speed
(SFM)
(SFM)
SFM= .262 x D1 x RPM
Revolutions Per Minute
(RPM)
(RPM)
RPM = 3.82 x (SFM/D1)
Feed Rate
(inches per minute)
(inches per minute)
F1 = F2 x N x RPM
Feed Per tooth
(inches)
(inches)
F2 = F1/(N x RPM)
Cutting Time
(minutes)
(minutes)
T = L/F1
Rate of Metal removal
(cubic inches per minute)
(cubic inches per minute)
MRR = W x D xF1
Symbol Definitions
D1 = Diameter of milling Cutter (inches)
RPM = Revolutions per minute
SFM = Cutting speed (feet per minute)
F1 = Feed rate (inches per minute)
F2 = Feed (inches per tooth)
N = Number of teeth in cutter
MRR = Rate of metal removed (cubic inches per minute)
T = Cutter time (minutes)
L = Length of cut (inches)
D = Depth of cut (inches)
W = width of cut (inches)
Stainless Steel
Type Of Application
Axial DOC
Radial DOC
Speed (SFM)
1/8"
1/4"
3/8"
1/2"
5/8"
3/4"
1"
Slotting
1 x Dia
1 x Dia
300
0.0006
0.0012
0.002
0.0025
0.0031
0.0037
0.005
Roughing
1.5 x Dia
0.5 x Dia
375
0.0008
0.0016
0.002
0.0032
0.0040
0.0048
0.006
Tool & Die Steel
Type Of Application
Axial DOC
Radial DOC
Speed (SFM)
1/8"
1/4"
3/8"
1/2"
5/8"
3/4"
1"
Slotting
1 x Dia
1 x Dia
325
0.0006
0.0013
0.002
0.0027
0.0034
0.0040
0.005
Roughing
1 x Dia
0.5 x Dia
375
0.0008
0.0017
0.003
0.0035
0.0044
0.0053
0.007
These are our starting parameters only. Higher feed rates are achievable.
Our "HOG" is the perfect addition for new high feed vertical milling software applications..
Machinist Tip
With the aggressive cutting of a variable flute end mill, run at 50% for the first few inches to hone the edges for longer tool life.