Retsch RS 200 - Manual (Page 18)

15.11.2006

Retsch GmbH
18
Doc. Nr. D 98.725.9998
Before starting the RS200
The milling cup clamping device has proved itself for
many years, and is easy and reliable to handle. In order
to guarantee safety of the operator and a long service
life of the machine components the milling cups must
be clamped carefully.
Please remember that the RS200 is a milling machine
with a very high power input into the milling material;
therefore the milling cups must be fixed properly.
Before starting the machine ensure that the milling set is
clamped.
Milling set can be ejected; danger of injury and damage
to equipment.
Suitable milling sets for the RS200
Do not use the grinding jar if it has 4 identical 13-mm-
diameter boreholes on the bottom.
These grinding jars may only be used in RS200 devices that
do not have a change index after the serial number. This
means that if a change index (e.g. xxxxxxxxx-F) is specified
behind your device’s serial number, you may not use the
older grinding jar described in the above.
Older grinding jars with 4 identical boreholes on the bottom
(13mm) can be reworked free of charge.
The RS200 is suitable only for milling sets with a nominal
volume of 50 – 250 ml.
These are available in the following materials:
 Special steel 50/100/250ml
 Free of heavy metal 100/250ml
 Agate 50/100ml
 Tungsten carbide 50/100ml
 Zirconium oxide 50/100ml
The milling sets have been developed specially for extreme
test conditions, such as long-term trials, high mechanical
loading and maximum rotary speeds – also for mechanical
alloying.
Milling set filling level
Guide values for material quantity and grain size
Milling cup
nominal
volume
Max.
charged grain size
Sample quantity
max./recommende
d
50 ml < 5 mm < 50/35 ml
100 ml < 10 mm < 100/75 ml
250 ml < 15 mm < 250/150 ml
The milling set to be used is determined by the sample
volume and max. charged grain size. Selection of the milling
set material depends on the degree of hardness of the milling
material and the effect of possible abrasion on the
subsequent analysis.
Fig. 14 Milling sets