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Southbend sb1018 User Manual

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Page of 56
-28-
For Machines Mfg. Since 8/09
Model SB1018
O P E R A T I O N
Blade Speed Chart
Figure 35. Dry cutting blade speed chart.
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
CUTTING SPEED RATE RECOMMENDATION
The chart in Figure 35 offers blade speed guidelines for various metals, given in feet per minute 
(FPM) and meters per minute (M/Min). Choose the closest available speed on the machine, then 
adjust the feed rate as necessary, using the appearance of the chips produces as a guide. Refer to the 
Chip Inspection Chart that follows for recommendations on adjusting your operation based on the 
appearance of the chips produced.
Chip
Appearance
Chip
Description
Chip
Color
Blade
Speed
Feed Rate/
Pressure
Other
Actions
Thin & Curled
Silver
Good
Good
Hard, Thick & Short Brown or Blue
Increase
Decrease
Hard, Strong & 
Thick
Brown or Blue
Increase
Decrease
Hard, Strong, 
Curled & Thick
Silver or Light 
Brown
Good
Decrease 
Slightly
Check Blade 
Pitch
Hard, Coiled & Thin
Silver
Increase
Decrease
Check Blade 
Pitch
Straight & Thin
Silver
Good
Increase
Powdery
Silver
Decrease
Increase
Coiled, Tight & Thin
Silver
Good
Decrease
Check Blade 
Pitch
thin & curled
short, hard & thick
thick, hard & strong
thick, hard & strong
thin & straight
powdery
thin & curled tightly
hard & thin
thin & curled
short, hard & thick
thick, hard & strong
thick, hard & strong
thin & straight
powdery
thin & curled tightly
hard & thin
thin & curled
short, hard & thick
thick, hard & strong
thick, hard & strong
thin & straight
powdery
thin & curled tightly
hard & thin
thin & curled
short, hard & thick
thick, hard & strong
thick, hard & strong
thin & straight
powdery
thin & curled tightly
hard & thin
thin & curled
short, hard & thick
thick, hard & strong
thick, hard & strong
thin & straight
powdery
thin & curled tightly
hard & thin
thin & curled
short, hard & thick
thick, hard & strong
thick, hard & strong
thin & straight
powdery
thin & curled tightly
hard & thin
thin & curled
short, hard & thick
thick, hard & strong
thick, hard & strong
thin & straight
powdery
thin & curled tightly
hard & thin
thin & curled
short, hard & thick
thick, hard & strong
thick, hard & strong
thin & straight
powdery
thin & curled tightly
hard & thin
Figure 36. Chip inspection chart.
The best method for choosing the cutting speed and feed rate for a cutting operation is to inspect the 
chips created by the cut. These chips will be indicators of what is commonly referred to as the "chip 
load". Refer to the chip inspection chart below to evaluate chip characteristics and determine whether 
to adjust feed rate/pressure, blade speed, or both.
Chip Inspection Chart