Rotor beater mills are suitable for coarse and fine
size reduction, either in batches or continuously, as well
as for the deagglomeration of dry, soft and medium-hard
organic and inorganic substances. The mills can be used
for sample preparation in the laboratory or in pilot plants
for large sample quantities.
The range of applications of the beater mills is just as versatile
as the wide range of accessories.
They crush:
- chemicals
- coal
- construction materials
- drugs /spices
- rare earths
- feed pellets
- fertilizers
- flue ash
- grains /seeds
- pharmaceuticals
- soils
and many other materials.
The SR 200 with a speed of 2850 min-1
(at 50 Hz) is available in gray cast
iron. The mill can be attached to a
bench or a wall bracket; however, it
is preferable to mount it on the optional
base frame.
The SR 300 is the powerful “comfort” model. Due to the higher rotor speed
(8100 min-1 at 50 Hz) and drive performance
higher throughputs with a
usually higher fine material fraction
are obtained. Grinding chamber, feed
hopper and the material inlet and
outlet are completely made from
stainless steel. The hopper can be
removed for easy cleaning. The mill
is supplied complete with base frame. |
- High throughput
- High final fineness
- Versatile in use
- Easy cleaning
- Exchangeable grinding and sieve inserts
- Quick-action door lock and motor brake
- Safe design to CE standard
- 2-year warranty
|
| Size reduction and deagglomeration
in rotor mills are achieved by
hammering, impact and shear effects.
The feed material passes
from the hopper into the center of
the grinding chamber where it is
crushed between the rotor, sieve
and grinding inserts. As soon as
the material is smaller than the
aperture size of the sieve it enters
the collecting receptacle. The quick-acting door lock ensures
easy access to the grinding
chamber for quick cleaning. With
their motor brake (braking time
< 0.5 s), safety switch, splashback
and access barrier in the inlet
and outlet areas, rotor beater
mills offer the highest degree of
operating safety. |
For soft materials we recommend the
sieve frame with ring sieve 360°.
The grinding insert 180° with the
corresponding sieve combines impact
and shear effects and has proven itself
with hard, brittle substances,
especially on the low-speed SR 200.
The final fineness depends on the aperture
size of the sieve, the breaking
behavior of the feed material and the
rotor speed. With many materials approx.
80% of the ground material is
smaller than half the aperture size.
For thermally sensitive, slightly fatty
or oily or particularly soft sample
materials, size reduction with distance
rotors is ideal. The larger
grinding gap ensures a reduction in
frictional heat, which prevents the
sieve or the rotor from being blocked.
This configuration is particularly efficient
with the high-speed SR 300. Among the standard accessories
supplied with the rotor beater mills
are a collecting receptacle (5 l)
made from stainless steel and a textile
filter hose.
 |
| Rotor Beater Mills SR 200, SR 300 |
Item No. |
| Rotor Beater Mill SR 200, supplied with rotor beater, filter hose (240 mm), collecting receptacle (5 l)
(Please order sieve frame or grinding insert, sieves and, if required, base frame separately) |
| SR 200 for 3/N~400 V, 50 Hz, rotor speed 2850 min-1, gray cast iron |
20.732.0001 |
| SR 200 for 230 V, 50 Hz, rotor speed 2850 min-1, gray cast iron |
20.732.0003 |
| Rotor Beater Mill SR 300, supplied with rotor beater, filter hose (240 mm), collecting receptacle (5 l) and base frame
(Please order sieve frame or grinding insert and sieves separately) |
| SR 300 for 3/N~400 V, 50 Hz, rotor speed 8100 min-1, stainless steel |
20.733.1002 |
 |
e.jpg)