CBN - SUMIBORON BN Finish Mill EASY FMU Type / FMU-E Type High-speed Finishing for Cast Iron
● High speed finishing cutter for gray cast iron milling that uses removable cartridges enabling simple, precise, run-out adjustment. ● Utilizes BN7000/BN700 grade insert with excellent wear and fracture resistance. ● Available in shell type and small diameter type with shank.
L
■ Features
● High-speed machining at v c = up to 6,600 SFM. ● Surpasses Ra 32 µin. nished surface roughness. ● Safety structure for centrifugal force under high-speed cutting conditions. ● Runout is less than 10μm: just attach the cartridge. ● Easy runout adjustment using external setting. ● Running cost is reduced because of the economical insert.
■ Application Range Grey Cast Iron (200 to 250HB) with pearlite matrix and Grey cast iron (130 to 160HB) with ferrite matrix [Example] Engine blocks, cylinder heads, etc.
■ Specifications
■ Recommended Cutting Conditions
● Shell With Shank
ø80 to ø315mm (FMU Type) ø40 to ø63mm (FMU-E Type) SNEW1203ADTR/L SNEW1203ADTR/L-S
● Cutting Speed ● Feed Rate ● Depth of Cut ● Coolant
v c = 2,650 to 6,600 SFM f z = .004" to .012 IPT a p = .020" or less Dry
● Regular Blade ● Low Thrust Blade
■ Cutting Performance ● Wear Diagram
● Estimated Tool Life
.0099
BN7000
90
v c = 2,000 SFM
.0079
Conventional CBN
60
.0059
v c = 2,650 SFM
v c = 6,600 SFM
F
v c = 3,300 SFM
.0039
F
D
v c = 5,000 SFM
30
F
D
F
D
.0019
F D D
F D
F D
0
12
24
36
48
0
1,650
3,300
5,000
6,600
Chip Evacuation Rate (inch 3 )
Cutting Speed v
c (SFM)
Part Material: Grey Cast Iron240HB (Pearlite) Cutting Speed: v
c = 2,000 to 6,600 SFM Feed Rate:
f z = .0059 IPT
Part Material: Grey Cast Iron(Pearlite) Cutting Speed: v
p = .0197” , Dry
Tool Grade: BN700
Depth of Cut: a
c = 1,650 to 6,600 SFM Feed Rate:
f z = .0079 IPT
Depth of Cut: a
p = .0118” Dry Tool Cat. No.: FMU4100R SNEW1203ADTR
Milling of ductile cast iron and alloy steel casting does not produce the best results. Dry cutting is recommended. Wet cutting will result in breakage of cutting edges in the early stages due to thermal cracking.
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