Page 596 - Ceratizit Catalog

Balancing
B269
HSC/HPC

What is a quality class? - Permissible residual
unbalance

Quality class means the permissible speed of the gravity
centre
G = speed of gravity centre [mm/s]
e = radius of gravity centre [mm]
-1
ω = angular velocity [s ]

DIN/ISO 1940
1000
800
630
500
400
315
250
200
160
125
Permissible residual unbalance / body mass in gmm/kg i.e. ‘e’ in μm
100
80 G 40
63
50
40
31,5 G 16
25
20
16
12,5 G 6,3
10
8
6,3
5 G 2,5
4
3,15
2,5
2
1,6
1,25
1
0,8
0,63
0,5
0,4
0,315
0,25
0,2
0,16
500 1000 2000 5000 10000 20000 50000
15000

The specific residual unbalance ‘e’ in µm results from the As a standard, monoblock tools with HSK
operating speed and the desired quality class.
connections are pre-balanced.
Milling / Technical information e.g.: = 2 kg -1

m
n
= 15,000 min
G
= 2.5 results in
= 1.6 µm
e
U = 1.6 µm · 2 kg = 3.2 g/mm
tol