Technical description
Item no. 10406166, Revision 03
16 ( 48 )
5.8
Leakage
Note: Damage to the HF spindle due to leakage.
Cooling lubricant may enter the HF spindle through the bearing of the inter-
nal coolant supply and destroy it:
q
If the internal coolant supply is operated in the lower pressure range.
q
If the pressure of the cooling medium builds up slowly.
u
Use leakage monitoring to protect the HF spindle from damage.
If pressure is applied to the internal coolant supply, the seal ring pair inside
the internal coolant supply closes.
If the pressure is deactivated, the mechanical seal opens. The leakage quantity
that emerges is discharged through a separate line by means of the relief hole.
The leakage quantity depends on the following factors:
q
Cooling lubricant and its viscosity.
q
Installation position of the internal coolant supply.
q
Routing of the supply line.
q
Position of the cooling lubricant valve and of the non-return valve and/or
3/2-way valve.
5.8.1
Internal coolant supply, vertical installation
Example of design: Leakage
Leakage
Screw-in depth
1
High Frequency Spindle
max. 6 mm
2
Internal coolant supply
max. 6 mm
Ü
Remove the sealing plugs that protect the connections against damage
and contamination during transportation.
Ü
Instead of these sealing plugs, install the appropriate hose fittings.
Ü
Install the corresponding hoses in the hose fittings
Ü
Route the leakage hose with a falling gradient so that the leakage can be
discharged.
Ä
Angle: at least 15°.
Ü
Route away the leak to avoid backing up.
