Page 208 - Tungaloy Catalog

T-CBN Ball Endmills
BBB2000
Hard
Materials
2 0° T-CBN Ball Endmills for die engraving
No. of teeth Helix

3 Stock Dimensions (mm) No. of
Cat. No.
T-CBN R Mill dia. Flute Neck Overall Shank flute
length length length dia. 2
0.3
1.2
0.6
0.5
6.0
50
BBB2006
PCD and PCBN Tools BBB2010 0.5 1.0 0.7 2.0 50 6.0
0.8
6.0
0.4
1.6
0.6
BBB2008
50
BBB2020
6.0
1.5
4.0
2.0
1.0
50
Tolerance (BBB2000)
Tolerance on dia.
Mill dia.
Tolerance on shank

0.3 ~ 1.0
±0.005

dBBB2000 (T-CBN Ball Endmills) h6
Work Prehardened steels (NAK80, etc.) Die steels High speed steel and die steel
materials Die steels (JIS SKD61, etc.) (JIS SKD11, DRM1 & 2, etc.) (JIS SKH, DRM3, etc.) Inclined angle of workpiece (θ1)/
Hardness ~ 52 HRC ~ 62 HRC ~ 70 HRC
Ball No. of No. of No. of Effective neck length (Z)
radius Depth of cut Feed rate revolutions Depth of cut Feed rate revolutions Depth of cut Feed rate revolutions
(R) ap ~ p f (mm) (in/min) n (min -1 ) ap ~ p f (mm) (mm/min) n (min -1 ) ap ~ p f (mm) (mm/min) n (min -1 )
0.3 0.02×0.03 2,000 0.01×0.02 2,000 0.01×0.02 1,500 0°30 ́/1.25 1°/1.30 2°/1.35 3°/1.45
0.4 0.03×0.05 2,000 0.02×0.03 2,000 0.01×0.03 1,500 50,000 0°30 ́/1.65 1°/1.70 2°/1.80 3°/1.90
0.5 0.05×0.05 3,000 50,000 0.03×0.05 3,000 50,000 0.02×0.03 2,000 0°30 ́/2.05 1°/2.10 2°/2.25 3°/2.40
1.0 0.10×0.10 5,000 0.05×0.05 5,000 0.03×0.05 3,000 0°30 ́/4.15 1°/4.25 2°/4.50 3°/4.80
Notes:
• Depths of cut (ap) shown in the table are the allowable maximum
values.
• Mist cooling or air blow is recommended.
• The maximum number of revolutions of the machine to be used is
-1
lower than 50,000 min , the revolutions and feed rate should be
modified at same rate.
• Use smallest possible overhang.

 : Stocked items.
 : Stocked in Japan

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