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Geumcheon-gu, Seoul
153-814 South Korea
Tel : +82 70 4680 6817
Fax : +82 2 806 0946
Email: startools@daum.net

For Hardened Steels

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2BR 2F Ball End-Regular

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Features
• Used micrograin solid carbide excellent for high speed cutting
• Greater rigidity and reduced chattering through optimized geometry
• Nanocomposite coatings for improved wear resistance and longer tool life
• Improved workpiece surface quality
• For Dry cutting and Wet cutting

2BR-dwg.png

Tolerance

Cutting Dia.

D≤6: 0/-0.01
D>6: 0/-0.015

Radius

R≤0.25: 0/-0.005
R>0.25: 0/-0.01



Recommended workpiece Material :

◎:First choice   ○:Alternative choice   △:Limited choice

Carbon Steel/Alloy Steel
(up to 350 HB)
Stainless Steel
(up to 240 HB)
Cast lron
(up to 260 HB)
Prehardened Steel
(up to 50 HRc)
Hardened Steel
(45 to 55 HRc)
Super Hardened Steel
(55 to 68 HRc)
Titanium
Alloy
Copper
Alloy
Aluminum
Alloy
Resin &
Plastics
Graphite

(Unit: mm)

EDP No. Cutting Dia X Radius of Ball Nose
d X R
Length of Cut

L1
Overall Length

L
Shank Dia

D
Quantity
2BR 020 040 S4 0.2 X R0.10.445 4
2BR 030 060 S4 0.3 X R0.150.6 45 4
2BR 040 080 S4 0.4 X R0.20.8 45 4
2BR 050 100 S4 0.5 X R0.251 45 4
2BR 060 120 S4 0.6 X R0.31.245 4
2BR 070 150 S4 0.7 X R0.351.5 45 4
2BR 080 200 S4 0.8 X R0.42 45 4
2BR 100 250 S4 1.0 X R0.52.5 45 4
2BR 100 250 S6 1.0 X R0.52.5 50 6
2BR 120 300 S4 1.2 X R0.63 45 4
2BR 150 300 S4 1.5 X R0.753 45 4
2BR 150 300 S6 1.5 X R0.753 50 6
2BR 200 500 S4 2.0 X R1.05 45 4
2BR 200 500 S6 2.0 X R1.05 50 6
2BR 250 600 S4 2.5 X R1.256 45 4
2BR 250 600 S6 2.5 X R1.256 50 6
2BR 300 800 S4 3.0 X R1.58 50 4
2BR 300 800 S6 3.0 X R1.58 60 6
2BR 350 800 S4 3.5 X R1.758 50 4
2BR 400 800 S4 4.0 X R2.08 60 4
2BR 400 800 S6 4.0 X R2.08 60 6
2BR 500 1000 S6 5.0 X R2.510 70 6
2BR 600 1200 60 6.0 X R3.012 60 6
2BR 600 1200 70 6.0 X R3.012 70 6
2BR 600 1200 80 6.0 X R3.012 80 6
2BR 600 1200 90 6.0 X R3.012 90 6
2BR 600 1200 100 6.0 X R3.012 100 6
2BR 700 1400 80 7.0 X R3.514 80 8
2BR 800 1400 60 8.0 X R4.014 60 8
2BR 800 1400 90 8.0 X R4.014 90 8
2BR 800 1400 100 8.0 X R4.014 100 8
2BR 800 1400 110 8.0 X R4.014 110 8
2BR 900 1600 100 9.0 X R4.516 100 10
2BR 1000 1800 70 10.0 X R5.018 70 10
2BR 1000 1800 90 10.0 X R5.018 90 10
2BR 1000 1800 100 10.0 X R5.018 100 10
2BR 1200 2200 75 12.0 X R6.022 75 12
2BR 1200 2200 100 12.0 X R6.022 100 12
2BR 1200 2200 110 12.0 X R6.022 110 12
2BR 1200 2200 130 12.0 X R6.022 130 12
2BR 1400 2400 105 14.0 X R7.024 105 14
2BR 1600 3000 105 16.0 X R8.030 105 16
2BR 1600 3000 160 16.0 X R8.030 160 16
2BR 2000 3800 160 20.0 X R10.038 160 20