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Blade Pitch (TPI)
To select the correct blade pitch:
1.
2.
Figure 20
CUTTING SPEED RATE RECOMMENDATION
TOOTH SELECTION
50
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 192½ 3½
75 100 150 200 250 300 350 400
2/3
2/3 1.4/2.5
1.5/.8
3/4
3/4
4/65/8
450
mm
inch
Copper
Alloy
229~482
(70) (147)
203~213
(62) (65)
85-203
(26) (62)
220
(67)
220~534
(67) (163)
203
(62)
85
(26)
321
(98)
180~220
(54) (67)
95~213
(29) (65)
242
(75)
65~85
(20) (26)
180~220
(54) (67)
75~118
(25) (36)
246
(75)
108~225
(33) (75)
196~354
(60) (108)
203
(62)
111~321
(34) (98)
150~203
(46) (62)
Aluminum
Alloy
Thin
Tube
Angle
Steel
Carbon
Steel
Speed FPM
(M/Min)
Speed FPM
(M/Min)
Speed FPM
(M/Min)
Speed FPM
(M/Min)
Material Material Material Material
Tool Steel
Mold Steel
High-Speed
Tool Steel
Alloy
Steel
Water
Hardened
Tool Steel
Stainless
Steel
CR Stainless
Steel
Free Machining
Stainless Steel
Gray
Cast Iron
Ductile
Austenitic
Cast Iron
Malleable
Cast Iron
Plastics
Cold-Work
Tool Steel
Hot-Work
Tool Steel
Oil-Hardened
Tool Steel
Figure 20.
3.
4.
5.