Page 595 - Ceratizit Catalog

Balancing
B268
HSC/HPC

Balance types

+ =

Static unbalance Moment unbalance Dynamic unbalance is the sum of static
unbalance and moment unbalance.

Unbalance is the state of a rotor in which the mass axis does not coincide with the rotational axis.

Rotational axis
s
U = m e [gmm] Mass axis

Unbalance is produced by a centrifugal force F which rotates
with the rotor.

Rotational axis

m = mass [g]
e = radius of gravity centre [mm]
S = mass axis
m = counterweight
k
U = unbalance
-1
ω = angular velocity [s ]

Reasons for unsymmetric mass distribution regarding the rotational axis
○ Manufacturing tolerance (tool and adapter) ○ Collet and nut
Milling / Technical information
○ Driving grooves on the SK/BT flange ○ Shank detail with Weldon and Whistle Notch
○ Unprocessed ground of the groove ○ Differential pitch of milling cutter
○ Driving grooves at HSK A, B, C, D
○ Position of radial clamping screw (Weldon, Whistle
Notch)
○ Collet chuck (radial position of slots)