SR 300 INTRODUCTION
PRODUCT ADVANTAGES
- wide range of accessories including various collection and feeding systems, rotors and sieves
- defined final fineness due to bottom sieves with aperture sizes from 0.12 – 10 mm
- adjustable speed for different applications
- gravity outlet with 5l or 30 L collecting vessel for batchwise collection of larger sample quantities
- optionally available cyclone unit with 0.25 – 0.5 – 1 – 2 – 5 or 30 liters collecting vessel
- easy cleaning thanks to exchangeable push-fit grinding insert, rotor and sieve
- electric engine brake
- central locking device
IDEAL FOR LIGHT AND HEAT SENSITIVE MATERIALS
In combination with the cyclone suction unit, the SK 300 Rotor Beater Mill is even suitable for grinding light and heat-sensitive materials.
- Efficient cooling of sample and grinding tools
- Improved sample discharge from the grinding chamber
- Particularly suitable for large volumes
- The cyclone accommodates sample bottles of 0.25, 5, and 30 liters
- Ideal for cryogenic grinding
TYPICAL SAMPLE MATERIALS
The SR 300 is suitable for grinding a wide variety of materials:
cement clinker, chamotte, coal, coke, glass, granite, gravel, gypsum, minerals, ores, oxide ceramics, slag, soils, waste, graphite, collagen, drugs, fertilizers, feed pellets, grains, spices, rubber, wood, coffee beans, bones, coal, food, corn, minerals, paper, plant parts, polymers, powder coatings, rice, seeds, straw, sweets, tobacco, textiles, chemical products, electronic components, dried fruits and vegetables, dried larvae, pharmaceutical products.
Powder Coatings
Coffee Beans
PET Flakes
Plant Materials
FUNCTIONING PRINCIPAL
Size reduction in the SK 300 takes place by impact effects. The feed material passes from the hopper directly into the center of the grinding chamber, where it is caught by the cross beater and ground between the baffle plates of the cross beater and the toothed grinding insert. As soon as the material is smaller than the aperture size of the bottom sieve used, it passes through the sieve and enters the collecting receptacle through the gravity outlet. The air drawn in through the hopper by the cross beater accelerates the discharge of the ground material. The airborne fine fraction is separated off by a downstream filter system. The optionally available cyclone separator enhances a cooling of the sample material and the cutting tools and improves the discharge of the sample from the grinding chamber.
COMPREHENSIVE SELECTION FOR YOUR INDIVIDUAL REQUIREMENTS
The wide range of accessories makes the SK 300 extremely versatile. The desired final fineness can be determined by selecting the ring sieve. Rule of thumb: After grinding, approximately 80% of the sample material is about half the size of the sieve aperture. You can choose between sieves with apertures ranging from 0.12 to 10 mm.
COLLECTING VESSELS
In the standard collecting vessel with 900 ml nominal volume, up to 300 ml of sample can be ground in one working step. With the large-volume cassette, the useful volume can be doubled to 600 ml. When utilizing a cassette with cyclone, various collecting vessels up to 4,500 ml useful volume are available.
VIBRATORY FEEDER DR 100
The Vibratory Feeder DR 100 is controlled via an interface and conveys material in a load-dependent manner to the hopper of the SR 300. This procedure ensures uniform grinding with maximum sample feed. The use of a feeder is particularly advantageous for large sample quantities.
TECHNICAL DATA
| Applications | size reduction |
| Field of application | agriculture, chemistry / plastics, construction materials, environment / recycling, geology / metallurgy, glass / ceramics |
| Feed material | medium-hard, brittle |
| Size reduction principle | impact |
| Material feed size* | < 25 mm |
| Final fineness* | < 100 µm |
| Speed at 50 Hz (60 Hz) | 2000 – 4000 min-1 (in steps of 200 min-1) |
| Speed setting | yes |
| Rotor peripheral speed | 15.5 m/s .. 31 m/s |
| Types of rotors | stainless steel / cast iron |
| Material of grinding tools | hardened steel, stainless steel, cast iron, steel 1.1740 (for heavy-metal free grinding) |
| Sieve sizes | trapezoid holes 0.12 / 0.20 / 0.25 / 0.35 / 0.50 / 0.75 / 1.00 / 1.50 / 2.00 mm round holes 3.00 / 4.00 / 5.00 / 6.00 / 8.00 / 10.00 mm |
| Dust extraction unit | optional cyclone |
| Collector capacity | 5 l / optional: 30 l |
| Drive | 3-phase motor with frequency converter |
| Drive power | 1.1 kW |
| Electrical supply data | 200-240 V, 50/60 Hz |
| Power connection | 1-phase |
| Protection code | IP 41 |
| Power consumption | 1.5 kW |
| W x H x D closed | 600 x 1200 x 700 mm (with base frame) |
| Net weight | ~ 60 kg (with base frame) |
| Remark weight (without hopper etc.) | ~ 50 kg (without base frame) |
| Standards | CE |
*depending on feed material and instrument configuration/settings
