MOLD FINISH MASTER SUMIBORON Ballnose Endmills for Copper Electrode Machining BNBC Type
Copper Alloy
Ballnose
Flutes
Side Milling
Face Milling
R-Grooving
Profiling
Fig 1
RE ±0.005
APMX
15˚
LU
LF
L
Body
Dimensions (mm)
Radius RE
Dia. DC
Cutting Edge Length APMX
Head Diameter DN
Neck Length LU
Overall Length LF
Shank Dia. DMM
Cat. No.
Stock
Fig
BNBC 2R010-0034 BNBC 2R010-0104 BNBC 2R020-0054 BNBC 2R020-0204 BNBC 2R030-0104 BNBC 2R030-0304 BNBC 2R050-0304
0.1 0.1 0.2 0.2 0.3 0.3 0.5
0.2 0.2 0.4 0.4 0.6 0.6 1.0
0.2 0.2 0.3 0.3 0.4 0.4 0.6
0.3 1.0 0.5 2.0 1.0 3.0 3.0
50 50 50 50 50 50 50
0.17 0.17 0.37 0.37 0.57 0.57 0.97
4 4 4 4 4 4 4
1 1 1 1 1 1 1
Grade: BN700
Identification Code
Number of Teeth BNBC 2 R030 - 010 4 Ballnose Radius Neck Length Shank Dia. Series Code
Recommended Cutting Conditions 1. Use a machine with high rigidity for stable cutting. 2. Non-water soluble cutting oil is recommended. Supply as a mist or external coolant. Take fire prevention precautions to avoid fire hazards caused by sparks igniting during machining or tool breakage. 3. Shorten overhang as much as possible. 4. Adjust cutting conditions according to actual conditions as machine rigidity and other conditions may vary. 5. Depths of cut shown in the table of conditions are maximum depths. Adjust the actual depth of cut to the desired machined surface roughness.
Surface Milling
p f
PArt Material Cutting Conditions
Copper Alloy
Standard Depth of Cut (mm) a p p f
Spindle Speed (min -1 )
Feed Rate (mm/min)
Cat. No.
BNBC 2R010-0034 20,000 -50,000 BNBC 2R010-0104 BNBC 2R020-0054 20,000 -50,000 BNBC 2R020-0204 BNBC 2R030-0104 20,000 -50,000 BNBC 2R030-0304
350 0.01 0.02 350 0.007 0.015 800 0.025 0.05 700 0.02 0.03
1,400 1,200
0.05 0.15 0.04 0.1
20,000 -50,000
BNBC 2R050-0304
2,200
0.15 0.35
L131
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