Technical Specifications

The PULVERISETTE 7 premium line is a two-station planetary micro mill from FRITSCH, engineered for loss-free grinding of hard, medium-hard, and brittle materials down to a final fineness of 50 nm. Its sunken grinding bowl design produces relative rotational speeds up to 2,200 rpm and centrifugal acceleration of 95 g, roughly 150% more energy input than conventional planetary mills. The specifications below cover the standard configuration; bowl material, gassing lids, and EASY GTM options are selected separately based on your application.

Model/Part Number: PULVERISETTE 7 premium line

Grinding Performance

• Main disk rotational speed: 150–1,100 rpm

• Relative rotational speed of grinding bowls: up to 2,200 rpm

• Centrifugal acceleration: up to 95 g

• Final fineness: down to 50 nm

• Grinding stations: 2 (simultaneous processing of up to 2 samples)

• Useful capacity: up to 2 x 30 ml

• Grinding bowl sizes: 20 ml, 45 ml, 80 ml

• Transmission ratio (bowl to main disk): 1 : –2

• Grinding modes: dry, wet (suspension), inert gas

• Applications beyond comminution: mixing, homogenizing emulsions and pastes, mechanical activation, mechanical alloying

Bowl Handling and Safety

• Clamping system: SelfLOCK, tool-free bowl seating

• Bowl detection: automatic via RFID chip

• Parameter check: automatic before each grinding run

• Protection: mill blocking on impermissible operating states, automatic shutoff on imbalance

• Chamber: automatic opening and closing with bowl positioning for handling

Control and Documentation

• Interface: ergonomic touchscreen, menu structure in 10 languages

• Software: MillControl for automatic control and grinding process validation

• Monitored parameters: actual rotational speed and power consumption

• Optional EASY GTM system: pressure and temperature measurement during grinding with EASY GTM bowls

Physical Specifications

• Footprint and weight: confirm with the current FRITSCH datasheet for your configuration

• Bowl materials: 6 options available to match sample hardness and contamination limits

Standard Accessories Included:

• PULVERISETTE 7 premium line base unit with 2 grinding stations

• Touchscreen control interface with multilingual menus

• Power cable

• Operating manual

• Calibration and test documentation as supplied by FRITSCH

Items Excluded:

• Grinding bowls and grinding balls (ordered separately by size and material)

• EASY GTM bowls, lids, and transmitter

• Gassing lids for inert gas grinding

• Emptying device for suspension grinding

• MillControl software license where applicable

Pre-installation Requirement:
Place the mill on a rigid, level bench capable of supporting the unit during high-acceleration operation. Maintain clearance around the grinding chamber for automatic lid movement and bowl handling. Connect to a grounded power supply matching the nameplate rating. Confirm ambient temperature and ventilation suit continuous operation, and complete the FRITSCH installation and safety briefing before first use.

Why This Mill Changes What Your Lab Can Grind

Most planetary mills reach the micrometer range and stop there. The PULVERISETTE 7 premium line planetary ball mill was built for labs that need to go further, into the nano range, without stretching grinding times into hours. The sunken bowl geometry raises relative bowl speed to 2,200 rpm and acceleration to 95 g, so the energy delivered per collision is substantially higher than a conventional planetary mill at the same nominal speed.

That matters beyond speed. Higher energy per impact means fewer passes, less heat exposure over time, and finer results from small sample volumes. With two grinding stations and up to 2 x 30 ml useful capacity, you can run a sample and its duplicate in the same cycle, or compare two parameter sets side by side.

For buyers sourcing through OS4U, the practical question is configuration: which bowl material, which size, and whether gassing or EASY GTM monitoring belongs in your workflow. The FRITSCH PULVERISETTE 7 premium line page lists the full accessory range and application notes to help you decide.

Key Benefits

Nano-range results without the long grind

The PULVERISETTE 7 premium line laboratory mill delivers final fineness down to 50 nm, with the shortest grinding times of any configuration in its class. For materials research, ceramics, and battery precursor work, that shortens the loop between formulation change and particle size result.

Bowl changes measured in seconds

SelfLOCK bowls snap into place as a single unit with the lid. No tensioning tools, no incorrect seating, no extra clamping step. The chamber opens and closes automatically and rotates the bowl mountings into a handling position. Fast bowl changes mean more samples per day and less idle time between runs.

Safety logic that runs before the motor does

Automatic RFID detection of inserted bowls, automatic parameter checks before every grind, blocking on impermissible operating states, and shutoff on imbalance. The mill verifies the setup before it spins up, which protects the operator, the bowl, and the sample.

Reproducibility you can document

MillControl validates each grinding process by checking and recording actual rotational speed and power consumption. With EASY GTM bowls, you also capture pressure and temperature inside the bowl during grinding. When a method needs to transfer between operators or sites, the record travels with it.

One platform for milling, mixing, and mechanochemistry

Beyond comminution, the same instrument handles mixing and homogenizing emulsions and pastes, mechanical activation, and mechanical alloying. Labs working in mechanochemistry or organic synthesis can consolidate several preparation steps onto one benchtop unit.

Solving the Problems That Slow Sample Prep Down

Struggling to reach sub-micron particle sizes? Conventional planetary mills plateau in the micrometer range. The 95 g acceleration and 2,200 rpm relative bowl speed push past that plateau, which is why labs grinding glass, ceramics, and silicon powders use this platform for nano-range work.

Losing hours to bowl handling and cleaning? SelfLOCK seating and the removable milling chamber cover cut setup and cleanup time. Bowls position themselves for handling, and the cover comes off completely for cleaning.

Worried about contamination from abrasion? Grinding bowls and balls are available in six materials, so you can match the bowl to sample hardness and acceptable contamination limits rather than accepting whatever the default bowl introduces.

Unable to prove a grind was reproducible? Automatic parameter checks, speed and power documentation through MillControl, and optional pressure and temperature logging with EASY GTM give you evidence, not just a result.

Running heat-sensitive or oxygen-sensitive samples? Dry, suspension, and inert gas grinding are all supported, with gassing lids for inert atmospheres and an emptying device for clean suspension recovery.

Warranty & Support

We provide a 1-year manufacturer’s warranty covering parts and labor. Technical support, installation assistance, and operational training are also available. Replacement parts and consumables are available throughout the product’s service life.

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