<==>
G =
U =
U · 2 ·
π
· n
m · 60
G · m · 60
2 ·
π
· n
==>
U =
U =
6,3 · 760 · 60
2 ·
π
· 20.000
2,286 gmm
==>
e =
e =
2,286
760
3 µm
==>
==>
m
r
=
m
r
=
m
r
=
m · e
r
760 · 0,003
31,5
0,072g
Shrinking Arbor HSK 63A: 50 08 A63 S
Weight:
760 grams
Taper radius: 31.5 mm
Balance grade: G 6.3 at 20,000 rpm
By means of precision balancing, the remaining balancing error has been minimized to 0.072 g (in relation to
the taper radius of the arbor of 31.5 mm).
Balancing, particularly in connection with high concentricity, prevents your spindle from damage, because it
decreases the centrifugal forces and reduces the formation of vibrations. This results in an extremely smooth
operation, which greatly increases machining and component quality. In addition, it allows higher cutting para-
meters – both in high-speed milling and in conventional milling.
Note to illustration: ”S” = mass axis
Example of a calculation:
Calculation of remaining balance error in example above:
Your advantages – why this is such an important subject.
9
Balance errors and balancing 2
