Technical description
Item no. 10201024, Revision 13
11 ( 36 )
5.3
Cooling
The HF spindle does not feature built-in cooling. However, this means that it
has a lower power than an HF spindle with cooling.
Note: Extension of the service life through heat dissipation.
Heat is produced during operation of the HF spindle. The temperature of the
HF spindle should not 45° C as this shortens the service life of the
bearing.
u
Check the temperature of the HF spindle on the housing.
u
Dissipate the heat using the spindle holder.
5.3.1
Cooling via spindle holder
Example of design:
Air-cooled spindle holder
Example of design:
Liquid-cooled spindle holder
To increase the power of the HF spindle, the heat generated must be dissi-
pated via the spindle holder (optional accessory).
If the spindle holder is to be produced in-house:
Ü
Contact
Nakanishi Jaeger GmbH
.
Ü
Request the tolerances and production plan for the spindle holder.
Ü
Produce the spindle holder from a thermally-conductive material (e.g. alu-
minum).
Ü
Observe the dimensions of the clamping range in the Technical Specifica-
tions
section. Make sure that the HF spindle is enclosed by the spin-
dle holder to the specified length.
Ü
Add cooling fins or holes (greater heat dissipation) to the external surface
of the spindle holder.
5.4
Sealing air
For guidelines on air quality,
see "Air purity classes (ISO
8573-1)
" section.
The sealing air prevents foreign bodies such as chips and liquids (e.g. emul-
sions) from entering the HF spindle.
Ü
Check that air escapes at the front between the housing and the rotating
parts of the HF spindle.
