HYDROK
Use and limits of use
40
Order h49 7144.907-333
Contact factor
Consult the following tables for the contact factor, depending
on the form of contact or the contact scenario.
Interference fit
Saddle fit
Edge fit
The clamping diameter of the
clamping head matches the
clamping diameter of the
workpiece.
The clamping diameter of the
clamping head is greater than
the clamping diameter of the
workpiece.
The clamping diameter of the
clamping head is less than
the clamping diameter of the
workpiece.
WS Workpiece
SP Clamping element
Table 7:
Contact forms / scenarios
Contact factor
𝒄
Machining
conditions
Contact form
Interfer-
ence fit
and sad-
dle fit
Edge fit
Smooth clamping head
Dry
1.1
1.0
Wet* / MMS**
1.3
1.2
Clamping head with
longitudinal and trans-
verse grooves
Dry
1.1
1.0
Wet* / MMS**
1.3
1.2
Clamping head with
Z or F serrations
Dry
1.0
1.0
Wet* / MMS**
1.2
1.1
*
Wet machining: Use of cooling lubricant [KSS]
**
MMS [MQL]: Use of minimum-quantity lubrication
Table 8:
Contact factor
