RETSCH / HAMMER MILL

HM 200.
Larger feed. Higher-capacity preparation.

A rugged dry-milling option for coarse reduction and deagglomeration of medium-hard, hard, brittle, tough and fibrous samples. Compare batch collection with a continuous gravity outlet for larger workflows.

Discuss HM 200 Technical data

Configurations and accessories shown may be optional.

FEED SIZE*< 100 mm

FINAL FINENESS*< 0.8 mm

SPEED3,000 / 3,500 rpm at 50 / 60 Hz

THE MODEL IN FOCUS

Large feed, coarse reduction and higher-throughput dry preparation.

Accept larger feed

The published feed limit is below 100 mm. Throughput can reach 1,500 kg/h with suitable material and configuration.

Use swing hammers

Ten freely swinging hammers act on the sample. The 200 mm rotor reduces material by impact and shearing.

Choose batch or continuous

Compare 10 L and 30 L collectors with a gravity outlet for a customer-specific continuous collection system.

Access wear components

The hopper and chamber open for cleaning. Wear plates and the swing-hammer rotor are serviceable components.

*Published feed limits, fineness and throughput depend on the material, sieve, speed and configuration. Sieve aperture is not the final particle size, and maximum throughput and finest output are not simultaneous guarantees.

CAPACITY & SIZE REDUCTION

High throughput & defined final fineness

The HM 200 processes large sample volumes in batches or continuously, with throughput up to 1,500 kg/h depending on the material and configuration. It combines a feed size below 100 mm with achievable final fineness below 0.8 mm.

The comparison shows the trade-off: the HM 200 favors throughput and larger feed, while the SR 300 and SK 300 accept feed below 25 mm and achieve finer output, below 0.05 mm and 0.1 mm respectively.

A crushing ratio of 125 expresses the HM 200's maximum feed size divided by its finest achievable grind size. These limits describe the range, rather than a guaranteed result in a single run.

Fixed speed: 3,000 rpm at 50 Hz, 3,500 rpm at 60 Hz
Batch collection or continuous gravity outlet
Accessible crushing chamber for cleaning
Connection for dust extraction

Comparison of HM 200, SK 300 and SR 300 throughput and crushing ratio — Published comparison of throughput and crushing ratio. Maximum throughput and finest output depend on the application. Click image to enlarge.

SIEVE SELECTION

Defined particle size thanks to different sieves

Choose the sieve to suit the sample and required result. Hard, brittle materials can be reduced to below 0.8 mm, depending on their properties. Sieve aperture and final particle size are different measurements.

Medium to large apertures can suit tough, fibrous or moist samples, including plastic toys, wood and humid coal. Select the opening through a material trial; the HM 200 is specified for dry grinding.

Available sieve apertures

.5 mm
1.5 mm
2 mm
3 mm
4 mm
5 mm
6 mm
8 mm
10 mm
15 mm
40 mm

Bottom sieves for the HM 200 hammer mill — Interchangeable bottom sieves with apertures from .5 to 40 mm. Click image to enlarge.

CYCLONE SYSTEM

Bye-Bye Dust and Sample Loss

The optional cyclone system supports sample collection and dust control during crushing for mining, precious metals, materials research and environmental analysis.

Sample recovery: Collect fine material and reduce sample loss to support representative preparation and reproducible analysis.
Less dust exposure: Reduce airborne dust around the collection process for a cleaner working environment.
Retrofit options: Existing instruments can be retrofitted with the cyclone system. Ask about compatibility and the complete collection arrangement for your HM 200.

HM 200 with optional cyclone and collecting vessel — Optional cyclone collection arrangement. Click image to enlarge.

FUNCTIONAL PRINCIPLE

How HM 200
works.

A horizontal shaft carries ten freely swinging hammers. Impact against the hammers and chamber reduces the feed until it passes the selected sieve and falls into the collector or continuous outlet.

Match sample behavior and feed dimensions
Choose the actual sieve, speed and contact materials
Validate the output with a representative trial

HM 200 operating components or configuration example — Configuration example; confirm the accessories and arrangement.

PUBLISHED TECHNICAL DATA

The technical
picture.

HM 200: hammer mill for medium-hard, hard, brittle, tough, fibrous samples.

Published feed limits, fineness and throughput depend on the material, sieve, speed and configuration. Sieve aperture is not the final particle size, and maximum throughput and finest output are not simultaneous guarantees. Confirm current electrical and installation requirements before ordering.

Maximum feed size*: < 100 mm
Final fineness*: < 0.8 mm
Batch size / feed quantity: up to 30 l depending on collecting receptacle
Speed at 50 Hz (60 Hz): 3000 min-1 (3500 min-1)
Throughput: 1500 kg/h
Collector capacity: 10 l, 30 l, continuous outlet
Drive power: 1.5 kW
W x H x D closed: 700 x 1570 x 750 mm
Net weight: ~ 150 kg

All other specifications

Applications: coarse and pre-crushing, desagglomeration
Field of application: agriculture, geology / metallurgy, glass / ceramics, coal, chemistry / plastics, construction materials, engineering / electronics, environment / recycling, food / feed
Feed material: medium-hard, hard, brittle, tough, fibrous
Size reduction principle: impact, shearing
Rotor peripheral speed: 31.4 m/s
Rotor diameter: 200 mm
Types of rotors: 10 swing hammer
Dry grinding: yes
Wet grinding: no
Cryogenic grinding: no
Material of grinding tools: hardened steel 1.0503 (hammers); steel 1.0330 (sieves)
Sieve sizes: .5 / 1.5 / 2 / 3 / 4 / 5 / 6 / 8 / 10 / 15 / 40 mm
Dust extraction unit: yes
Process line version: yes
Drive: 3-phase motor
Electrical supply data: different voltages
Power connection: 3-phase
Protection code: IP 54
Standards: CE

CONFIGURE THE WORKFLOW

The options shape
the result.

Hopper & collection choices

Choose a standard hopper for general feeding or discuss the long-stock hopper for elongated samples. Review 10 L, 30 L and continuous gravity-outlet arrangements.

Sieves, tools & cleaning

Published sieve openings range from .5 to 40 mm. Hammers are hardened steel 1.0503 and sieves steel 1.0330. Medium-to-large apertures may suit tougher or moist samples; establish performance by testing.

Dust control & installation

Review the dust-extraction connection, compatible cyclone arrangement, feeding and downstream handling. HM 200 is specified for dry grinding; wet and cryogenic grinding are not listed capabilities.

TYPICAL SAMPLE MATERIALS

From glass and coal to feed and herbs

The HM 200 is suited to preliminary crushing and fine grinding of ores, granite, ceramics, quartz, slag, soil, coal, glass, cement clinker, wood, plastics, feed pellets, dry animal feed and dried herbs. The sieve, collection system and achievable result depend on the sample.

Animal Feed sample material — Animal Feed

Explore materials & applications

MODEL APPLICATION REVIEW

Put HM 200
to the material test.

Share the starting size, desired fineness and quantity to process. We’ll review the milling route, tools, collection and opportunities for a material trial.