Technical specifications P-7

Product catalog summary

Technical Specifications

Technical Data: The P-7 Planetary Mill operates on the principle of impact force and is suitable for a variety of materials including hard, medium-hard, soft brittle, tough, and moist substances. It is applicable in fields such as geology, metallurgy, material technology, ceramics, pharmaceuticals, chemistry, and biology. The mill features two working stations and uses grinding bowls and balls made from materials like agate, hardened stainless steel, tungsten carbide, and others. It supports grinding bowl sizes of 45 ml and 12 ml, with grinding ball sizes ranging from 1 to 15 mm. The maximum initial feeding size is 5 mm, and it can handle sample quantities from 0.5 to 40 ml, achieving a final fineness of less than 1 µm. The grinding process can be dry or wet, and the device can operate in inert gas environments with additional equipment. The main disk rotates at speeds between 100 and 800 rpm, with a relative bowl speed of 1,600 rpm.

Accessories: The P-7 offers a range of accessories including grinding bowls and balls in various materials and sizes. Grinding bowls are available in 45 ml and 12 ml volumes, made from materials such as agate, sintered corundum, zirconium oxide, and more. Grinding balls are available in diameters from 0.1 mm to 15 mm, with specific recommendations for different sample types and sizes. The document provides detailed ordering information for these accessories.

Application Examples: The document provides examples of milling applications for different materials using the P-7. For instance, sand is milled using a 45 ml steel bowl with 18 x 10 mm balls at 800 rpm for 3 minutes. Coal is milled with a 45 ml agate bowl and 7 x 15 mm balls at 800 rpm for 1 minute. Other examples include chalk and lapis lazuli, each with specific configurations and milling times.

Contact Information: For further inquiries or test grinding, contact FRITSCH GmbH at their provided address, phone number, or email.

Catalog excerpts

TECHNICAL SPECIFICATIONS

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Content Technical data . . . . . . . . . . . . . . . . . . . . . . . page 3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . page 5 Application examples . . . . . . . . . . . . . . . . . page 12

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P-7 | Technical specifications | Technical data Technical data P-7 – Planetary Mill Working principle impact force Material type hard, medium-hard, soft brittle, tough, moist geology and mineralogy metallurgy material technology ceramics pharmaceuticals chemistry biology sample preparation for analysis Working stations Grinding tools grinding bowls + grinding balls Materials grinding tools agate, hardened stainless steel, hardmetal tungsten carbide, sintered corundum, zirconium oxide, silicon nitride Grinding bowl sizes Grinding ball sizes Max. initial size / feeding size Sample quantity Final...

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P-7 | Technical specifications | Technical data Transmission ratio planetary disk/grinding bowl Relative bowl speed Effective diameter of main disk Power consumption Electrical details Emission sound pressure level at the workplace acc. to DIN EN ISO 3746 (workplace related) Safety class

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P-7 | Technical specifications | Technical data Accessories P-7 – Planetary Mill Order no. Instrument without grinding bowls and balls, incl. clamping system 07.4000.00 for 100–120 / 200–240 V/1~, 50–60 Hz, 740 W Voltage, indicated by customer is set. Certification IQ/OQ documentation (questionnaire format – implementation not included) With rotational speeds of up to 800 rpm, the P-7 is ideal for timesaving and homogeneous fine grinding of small sample quantit

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P-7 | Technical specifications | Accessories Grinding bowls for Planetary Mill P-7 Grinding bowls 45 ml volume for P-7 50.7050.00 Zirconium oxide Hardened, stainless steel Hardmetal tungsten carbide, with steel casing Silicon nitride Polypropylene disposable bowl Bowl adapter for polypropylene disposable bowl Replacement seal ring PTFE 50/40 mm dia. for all bowls of 45 ml volume Grinding bowls 12 ml volume for P-7 Zirconium oxide Hardened, stainless steel Hardmetal tungsten carbide Silicon nitride Replacement seal ring PTFE 37/26 mm dia. for all bowls of 12 ml volume Accessories for single-use...

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P-7 | Technical specifications | Accessories To specifically prevent contamination of samples due to unwanted abrasion, all grinding bowls and the corresponding grinding balls are available in 6 different materials.

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P-7 | Technical specifications | Accessories Grinding balls for Planetary Mill P-7 Grinding balls 15 mm dia. for grinding bowl 45 ml 55.0150.09 Hardened, stainless steel 55.0150.08 Hardmetal tungsten carbide Grinding balls 10 mm dia. for grinding bowls 45 ml, 12 ml 55.0100.09 Hardened, stainless steel 55.0100.08 Hardmetal tungsten carbide Grinding balls 5 mm dia. for grinding bowls 45 ml, 12 ml 55.0050.05 Agate, polished (100 pieces weigh approx . 17 g)]) 55.0050.06 Sintered corundum (99.7 % Al203) (100 pieces weigh approx . 48 g)]) 55.0050.27 Zirconium oxide (100 pieces weigh approx . 38 g)1...

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P-7 | Technical specifications | Accessories Grinding balls ≤ 3 mm dia. for grinding bowls 45 ml, 12 ml 55.0030.27 Hardened, stainless steel 3 mm dia. Hardened, stainless steel 1 mm dia. Hardmetal tungsten carbide 3 mm dia. Hardmetal tungsten carbide 1.6 mm dia. Hardmetal tungsten carbide 0.6 mm dia. Further grinding balls ≤ 3 mm dia. are available. Grinding balls also available in further sizes.

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P-7 | Technical specifications | Accessories The specified grinding ball sizes are application-dependent guidelines. It is not recommended to mix balls with different diameters.

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P-7 | Technical specifications | Accessories Grinding balls with a diameter of 3 mm and smaller must be weighed. The above table shows the regulred weight per grinding bowl. The usable capacity depends on the type of material, The specified ball filling per bowl is the minimum Quantity; depending on the material behaviour, it may need to be increased, In exceptional cases, the Quantity of grinding balls can be reduced by up to 15 %. In order to achieve consistent grinding results In line with our recommendations, a longer grinding time Is necessary, which may result In Increased abrasion,

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P-7 | Technical specifications | Application examples Milling: • 45 ml grinding bowl made of steel Milling: • 45 ml grinding bowl made of agate

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P-7 | Technical specifications | Application examples • 45 ml grinding bowl made of agate Sample 3: lapis lazuli • 45 ml grinding bowl made of zirconium oxide

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Contact person: Contact us now for a non-binding consultation or individual test grinding to identify your ideal device configuration and optimal grinding parameters. Version number: V01_2025 | Subject to technical changes.

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