Version 1.1.6 - 2021-09-17
63
Translation of original instruction
3442761
GB
K11-
160_I
SO
-702
-2_3
4427
61_b
a-int
egr
at
ed_G
B.
fm
4.25.5 Clamping force-speed diagram - Lathe chuck K11-160
The clamping force to speed diagram shows the calculated centrifugal force with the matching
jaw design as a function for the speed if the chuck jaws do not protrude beyond the outer dia-
meter of the chuck.
4.25.6 Clamping jaw centrifugal force
To calculate the required tensioning force for processing a workpiece, the centrifugal force of
the clamping jaws must be taken into account.
The permissible speeds can be determined in accordance with VDI Guideline 3106 "Determi-
ning the permissible speed for lathe chucks (jaw chucks). This guideline also allows for the resi-
dual tensioning force at a specified speed to be determined.
Speed n [rpm]
Cl
amping
force
F
sp
[ kN ]
Required minimum clamping force 33 %
Tightening torque with key max. 160 Nm
Tightening torque with key 87 Nm
Fc
Centrifugal force in N
m
Mass in kg/set
rs
Centre of gravity distance to the centre of the chuck in
metres
n
Speed min
-1
r
0
Centre of gravity distance to the clamping jaw