Achieving top crushing results

Impact crusher & impact mill


Impact crusher & impact mill

Impact crushers and impact mills of type PB and PM are universal and, at the same time, economical solutions. The impact crusher achieves very high crushing ratios in both the first and second stage. This results in a wide range of salable, cubical final products. The impact crusher can be repurposed into an impact mill for manufacturing fine grains by inserting a higher machine base and an additional grinding track. This flexible solution allows you to benefit from excellent crushing results and respond to changing project requirements at any time. Impact crushers are traditionally used for rock processing, but the machine is also suitable for recycling applications involving the processing of any kind of brittle-hard material.

Benefits at a glance:

  • Excellent crushing performance
  • Robust design
  • Quick and simple blow bar replacement
  • Large feed opening
  • Largely standardized and interchangeable wear parts
  • Low maintenance requirements

Powerful rotors

  • Sturdy welded structure 
  • Wears parts can be replaced quickly
  • Quick and simple blow bar replacement thanks to patented mounting system
  • Available with several different rotor versions depending on application

Robust impact plates

  • Two versions: Monoblock casting, welded steel structure 
  • Flexible configuration for any shredding application
  • Impact plates supported by durable, maintenance-free spring units

Large feed opening

  • Prevents material jams
  • Optimum use of crushing chamber even at maximum input size
  • High throughput rates
  • Excellent shredding results

Maintenance-friendly design

  • Durable, compact design
  • Easy access for maintenance thanks to two-piece enclosure 

Optimized wear parts

  • Interchangeable parts reduce number of parts you need to keep in stock
  • Easy to replace

Crushing chamber

Flexible solution for any crushing application

Monoblock casting 

  • Impact crusher with monoblock casting baffle plates which can be rotated by 180°
  • Suitable for limestone and similar types of rock and for concrete recycling

Monoblock casting with wear strips

  • Impact crusher with monoblock casting baffle plates with screw-fastened wear strips made of white cast iron
  • Suitable for medium-hard rock

Welded construction with wear elements

  • Impact crusher with welded baffle plates and screw-fastened wear elements made of white cast iron.
  • Well suited for more abrasive types of rock.

Impact mill with additional grinding track

  • The additional grinding track located below the rotor axle is used to increase the crushing ratio, improve the particle shape and increase the crushed face count.
  • Alternative impact plates (see above) depending on the type of rock.

Blow bar replacement

Replacing impact bars

Based on the task they are performing, the impact bars are made of chilled cast manganese or chrome. The bars are fastened in place using a patented mounting system, which allows the operator to quickly remove and replace them and to use them on both sides. The simple system saves time and requires less physical strength to operate.

Step 1

Step 1

The rotor is first locked [1], then the impact bar is suspended on a traverse beam [2]. After removing the retaining bar [3] by pulling it out from the side, the impact bar can be lifted up.

Step 2

Step 2

The impact bar is suspended off-center on a cross beam. After lifting up the cross beam [1], the impact bar can be rotated [2].

Step 3

Step 3

The impact bar automatically rotates to the new position [1].

Step 4

Step 4

The impact bar can now be lowered [1], which makes it possible to re-install the retaining bar [2]. In the next step, the rotor lock is released [3].

Adjusting the gap width

Adjusting the gap

Three systems are available for adjusting the gap:

  • Mechanical adjustment: via a free-moving thread
  • Semi-automatic adjustment: at the press of a button via hydraulic cylinders or motors
  • Automatic adjustment: by way of a hydraulic cylinder in combination with a hydraulic load-limiting device. An electronic control unit is used to set and monitor the gap.

Technical specifications

Performance data
TypERotorNumber of
blow bars
Feed size 1)
Drive power 2)
Throughput range 3) 

Impact crushers

PB 0806800 mm620 mm2 (optional 3)400 mm37 - 55 kW50 TPH
PB 0810800 mm1.030 mm2 (optional 3)400 mm55 - 90 kW90 TPH
PB 10101.000 mm1.030 mm3600 mm90 - 132 kW135 TPH
PB 10131.000 mm1.280 mm3600 mm132 - 160 kW160 TPH

Impact mills

PM 0806800 mm620 mm2250 mm37 - 55 kW40 TPH
PM 0810800 mm1.030 mm2250 mm55 - 90 kW70 TPH
PM 10101.000 mm1.030 mm3300 mm90 - 132 kW100 TPH
PM 10131.000 mm1.280 mm3300 mm132 - 160 kW120 TPH

1) Maximum edge length in mm.
2) Performance data for other designs available on request.
3) Dependent on type of rock, rotor circumferential speed and percentage of max. particle size in the grading curve. 

Dimensions and weights
TypeFeed openingOutlet flangeTransport dimensionsWeight 4)

Impact crushers

PB 0806640 mm650 mm1.775 mm1.120 mm2.130 mm1.590 mm1.900 mm4.200 kg
PB 0810640 mm1.070 mm1.775 mm1.540 mm2.130 mm2.150 mm1.900 mm5.300 kg
PB 1010800 mm1.060 mm2.250 mm1.540 mm2.820 mm2.180 mm2.380 mm10.500 kg
PB 1013800 mm1.330 mm2.250 mm1.810 mm2.820 mm2.450 mm2.380 mm11.500 kg

Impact mills

PM 0806640 mm650 mm1.775 mm1.120 mm2.130 mm1.590 mm2.120 mm4.600 kg
PM 0810640 mm1.070 mm1.775 mm1.540 mm2.130 mm2.150 mm2.120 mm6.100 kg
PM 1010800 mm1.060 mm2.250 mm1.540 mm2.820 mm2.180 mm2.710 mm13.600 kg
PM 1013800 mm1.330 mm2.250 mm1.810 mm2.820 mm2.450 mm2.710 mm15.000 kg

4) Weight for standard design without accessories

All technical data shown here refer to the standard version. The technical data for customer-specific versions may vary from the information shown here. All technical data may change due to development. Subject to modification without notice. 


Brochure "Impact Crusher & Impact Mill (PB & PM)"
Brochure of the "Recycling Technology" business unit
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Tests give certainty

Which technical solution is the right one for your recycling process? Don’t leave anything to chance. Our team of specialists will test your material at our test center and develop a solution tailored to your specific needs.

IFAT 2024

05/13/2024 - 05/17/2024 | Munich (Germany)
Visit us in hall B4 at booth 351/450.

E-Waste World | Metal Recycling | Battery Recycling - Conference & Expo 2024

06/26/2024 - 06/27/2024 | Frankfurt am Main (Germany)

ICBR 2024 - International Congress for Battery Recycling

09/10/2024 - 09/12/2024 | Basel (Switzerland)

IFAT India 2024

10/17/2024 - 10/19/2024 | Delhi (India)

Success stories

It’s all about the purity: high-grade aluminum concentrate from incinerator bottom ash

February 2021
French waste recycling company Norval has been using an impact mill (PM) from BHS-Sonthofen for aluminum processing in the final process step since June 2019. The sturdy machine frees the pre-sorted aluminum fraction from the waste incineration system from undesired adhesions, thus reliably ensuring that a high-grade aluminum concentrate is obtained.

DHZ AG – Extracting concentrated metals from incinerator bottom ash

July 2016
DHZ AG operates a modern recycling center in Lufingen in the Swiss canton of Zurich. The facility focuses on processing incinerator bottom ash (IBA). BHS-Sonthofen supplemented two existing IBA processing plants with an additional plant that extracts high-quality, heavy and light non-ferrous metal fractions from the coarse concentrate generated upstream. These are of such high quality that they can be sold directly to smelters or to industrial customers.

Recycling gypsum plasterboard: Turning construction waste into a chemically pure resource

October 2020

EU regulations, coal phase-out and the construction boom are among the many reasons these days for making the recycling of gypsum highly attractive. However, the process needs to be cost-efficient. BHS-Sonthofen developed a process that entails two crushing stages. This even makes it possible to recycle any adhering impurities.


Recycling gypsum plasterboard - Turning construction waste into a chemically pure resource

September 2020

EU regulations, coal phase-out and construction boom are among the many reasons these days for making the recycling of gypsum highly attractive. However, the process needs to be cost-efficient. BHS-Sonthofen developed a process that entails two crushing stages. This makes it even possible to recycle any adhering impurities.


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