Precise secondary crushing for defined particle shapes
The secondary impact crusher HSI, often also referred to as an impact mill and internationally known as an impact crusher, is a key machine for the second crushing stage in industrial processing plants. It is used to further process pre-crushed material in a controlled manner, optimize the particle size distribution and produce a high-quality particle shape for downstream screening or tertiary processes. Typical application areas include aggregate production, the cement industry and the recycling of mineral construction materials.
The HAZEMAG secondary impact crusher HSI is specifically designed for these tasks. Through precisely adjustable impact aprons and a coordinated rotor-blow bar geometry, the material is further crushed in a controlled manner. The result is uniform particle sizes, fine content adapted to the process requirements and stable product quality even with varying material characteristics.
Optional features such as hydraulic adjustment or the intelligent HAZtronic control system allow rapid adaptation to different process requirements and support safe, low-maintenance operation. In this way, the secondary impact crusher makes a decisive contribution to process stability, energy efficiency and the economic performance of the entire plant.
Your advantages of the SECONDARY IMPACT CRUSHER HSI at a glance
- Targeted secondary crushing: Optimizes pre-crushed material for precise particle size and shape.
- Flexible particle size control: Precise size adjustment with or without grinding path.
- Maintenance-friendly design: Hydraulic systems minimize downtime.
- Stable process performance: Consistent results with fluctuating material properties.
- High wear life: Optimized blow bars and liners extend service life with abrasive materials.
175 Years
Engineering
expertise
More than
75,000
installations
worldwide
SECONDARY IMPACT CRUSHER HSI for your project – direct from HAZEMAG
HAZEMAG supports you in the design and integration of the secondary impact crusher for secondary crushing and particle shaping, including service and spare parts supply.
Technical Data and Grain Size Distribution of the Secondary Impact Crusher | HSI-Series
Technical Data without Grinding Path | HSI Series
This version is suitable for applications where controlled further size reduction with reduced generation of fines is the focus. It is frequently used when the particle shape is to be optimized without additionally limiting the material. The stated performances are guide values and depend on material characteristics, feed size, gap settings, moisture content and the desired final particle size.
SECONDARY IMPACTOR HSI
| Rotor | Inlet | Capacity | Hard Rock | Soft to Medium Hard, Low Abrasion | |||||||||
| Type | Dia. x Width mm | Height x Width mm | 95% <45mm t/h | Max. Edge Length mm | Power Requirement kW | Weight kg | Max. Edge Length mm | Power Requirement kW | Weight kg | ||||
| HSI 1007 | 1.030 x 670 | 495 x 690 | 40 - 90 | 180 | 75 - 110 | 6.800 | 300 | 45 - 90 | 5.950 | ||||
| HSI 1010 | 1.030 x 1.000 | 495 x 1.020 | 90 - 120 | 180 | 110 - 160 | 9.050 | 300 | 90 - 132 | 7.200 | ||||
| HSI 1014 | 1.030 x 1.340 | 495 x 1.360 | 120 - 160 | 180 | 160 - 200 | 10.700 | 300 | 132 - 160 | 9.300 | ||||
| HSI 1414 | 1.340 x 1.340 | 580 x 1.360 | 160 - 300 | 220 | 200 - 355 | 16.500 | 350 | 160 - 320 | 13.200 | ||||
| HSI 1420 | 1.340 x 2.000 | 580 x 2.020 | 300 - 420 | 220 | 355 - 500 | 23.000 | 350 | 315 - 400 | 19.800 | ||||
| HSI 1625 | 1.540 x 2.500 | 710 x 2.520 | 400 - 600 | 280 | 630 - 800 | 35.000 | 450 | 400 - 600 | 31.000 | ||||
| HSI 1630 | 1.540 x 3.000 | 710 x 3.020 | 600 - 700 | 280 | 800 - 950 | 42.000 | 450 | 630 - 710 | 37.200 | ||||
Technical Data with Grinding Path | HSI Series
With a grinding path, the final product size can be controlled precisely and oversize material can be limited effectively. This version is preferred when narrow particle size ranges or defined screening curves are required.
SECONDARY IMPACTOR HSI WITH GRINDING PATH
| Rotor | Inlet | Capacity | Hard Rock | Soft to Medium Hard, Low Abrasion | |||||
| Type | Dia. x Width mm | Height x Width mm | 95% <35mm t/h | Max. Edge Length mm | Power Requirement kW | Weight kg | Max. Edge Length mm | Power Requirement kW | Weight kg |
| HSI 1007 | 1.030 x 670 | 495 x 690 | 40 - 90 | 180 | 90 - 132 | 6.950 | 300 | 55 - 110 | 6.100 |
| HSI 1010 | 1.030 x 1.000 | 495 x 1.020 | 90 - 120 | 180 | 132 - 200 | 8.500 | 300 | 110 - 160 | 7.350 |
| HSI 1014 | 1.030 x 1.340 | 495 x 1.360 | 120 - 160 | 180 | 200 - 250 | 10.900 | 300 | 160 - 200 | 9.500 |
| HSI 1414 | 1.340 x 1.340 | 580 x 1.360 | 160 - 300 | 220 | 250 - 400 | 16.800 | 350 | 200 - 355 | 13.500 |
| HSI 1420 | 1.340 x 2.000 | 580 x 2.020 | 300 - 420 | 220 | 400 - 630 | 24.000 | 350 | 355 - 500 | 20.800 |
| HSI 1625 | 1.540 x 2.500 | 710 x 2.520 | 400 - 600 | 280 | 710 - 900 | 36.000 | 450 | 500 - 710 | 32.000 |
| HSI 1630 | 1.540 x 3.000 | 710 x 3.020 | 600 - 700 | 280 | 900 - 1.000 | 43.500 | 450 | 710 - 900 | 38.700 |
Grading Curve without Grinding Path | HSI Series
The grading curve shows the typical screening curve of the HSI secondary impact crusher during operation without a grinding path. It illustrates the resulting particle size distribution during the secondary crushing of pre-crushed material and serves as a basis for evaluating particle shape, oversize proportion and fines content. It also supports the design of downstream screening and conveying stages within the second process stage.
Grading Curve with Grinding Path | HSI Series
This grading curve shows the typical screening curve of the HSI secondary impact crusher when operated with a grinding path. The additional limitation of oversize material enables targeted control of the particle size distribution and supports the production of defined final particle sizes in the second crushing stage. The diagram serves as a reference for the design of screening circuits, recirculation flows and for ensuring consistent product quality.
Application Areas of the SECONDARY IMPACT CRUSHER HSI
The HAZEMAG secondary impact crusher is used wherever pre-crushed material needs to be further processed and optimized in terms of particle size and particle shape. It is a key component of the second process stage in stationary and semi-mobile processing plants.
Typical applications are found in aggregate production, the cement industry and the recycling of mineral construction materials. Following the use of a primary crusher, the secondary impact crusher performs targeted secondary crushing and ensures a uniform particle size distribution with a reduced proportion of oversize material.
Typical Materials
- Pre-crushed aggregates from primary crushing
- Limestone and dolomite for targeted particle shaping
- Mineral recycling materials from concrete and construction waste
- Screen oversize and recirculated material from screening and crushing circuits
After-Sales Service
Our after-sales service supports you in the maintenance, optimization and adaptation of the machine to changing process requirements in the second crushing stage. You benefit from direct manufacturer know-how and short response times.
Downloads
Our Service at a Glance
Spare and wear parts via HAZparts
Through HAZparts, you receive genuine, inspected spare and wear parts specifically designed for use in the HSI secondary impact crusher. These include wear-intensive components such as blow bars, impact plates and grinding paths as well as rotor, bearing and hydraulic components. The precisely fitting design of the original parts supports consistent cubicity, reduces unplanned downtime and ensures reliable performance in the second crushing stage.
Available spare and wear parts for the HSI secondary impact crusher:
- Blow bars and impact plates
- Rotor assemblies, rotor shafts as well as bearing and sealing units
- Wear and protection plates for the crushing chamber and material flow
- Hydraulic components for impact apron adjustment and safety systems
Your advantages with HAZparts for the HSI:
- Original HAZEMAG spare parts precisely matched to the HSI series
- High availability for minimal downtime in the secondary crushing stage
- Technical support for the selection and replacement of wear parts
- Reliable spare parts supply for stable continuous operation
Your project begins with the right SECONDARY IMPACT CRUSHER
The right secondary impact crusher (HSI) is essential for stable secondary crushing and consistent particle shaping. HAZEMAG supports you from technical design through to integration into your plant and ensures that machine, material and process are optimally aligned.
Benefit from:
- Application-specific consulting for secondary crushing and particle shaping
- Technical design for targeted particle shaping and oversize reduction
- Coordination with existing primary crushing stages and downstream screening circuits
- Access to current performance data, setting parameters and operational experience
- Direct coordination with the manufacturer for stable and efficient process integration
Configuration of the HAZEMAG HSI Series
As the HSI series is designed for the second crushing stage, it can be specifically adapted to material properties, the desired particle shape and throughput requirements. The modular design allows flexible adjustment to different secondary crushing applications and ensures stable process operation within the plant.
- HAZtronic® system for automatic control and monitoring of the crushing process
- Automatic monitoring and optional adjustment of defined operating parameters
- Real-time monitoring of all operating parameters via the plant control system
- Optional: Integration into higher-level SCADA or PLC systems
- Operation with or without a grinding path, depending on the required degree of crushing
- Adjustable impact plates for flexible particle size distribution
- Wear-resistant internal liners for abrasive materials
- Selection of different rotor types
- Blow bars in various alloys (manganese, chrome, martensitic)
- Hydraulic overload system for protection against tramp material
- Optional direct drive or belt drive
- Optional: energy-efficient motors with variable frequency drive (VFD)
- Optimized drive performance for consistently high throughput
- Hydraulic opening systems for quick access to the crushing chamber
- Automatic lubrication of bearings and joints
- Mechanical safety locks and pressure relief valves
- Integration into existing conveying or screening systems
Buy inspected used IMPACT CRUSHERS
Used HAZEMAG impact crushers also stand for reliability, stable processes and consistent product quality.
All machines are carefully inspected, serviced and refurbished with original parts before sale to ensure the proven performance and operational reliability associated with HAZEMAG equipment.
Tip: Available models vary regularly – from primary to secondary and tertiary impact crushers. Our team will be happy to assist you in selecting the right machine.
Your advantages when purchasing used equipment:
- Technically inspected and factory-refurbished plants
- Original parts and updates according to current HAZEMAG standards
- Factory-inspected machines with a defined warranty agreement
- Worldwide shipping and commissioning by HAZEMAG service
Further equipment for other process stages
In addition to the HSI secondary impact crusher, HAZEMAG offers other crusher types for different process stages and material requirements.
This allows you to find the optimal combination of performance, efficiency and cost-effectiveness for every application.
Further Important Information on the SECONDARY IMPACT CRUSHER
The HSI secondary impact crusher enables energy-efficient operation in the second crushing stage. Coordinated rotor geometry, adjustable impact aprons and demand-controlled drives ensure that energy input is precisely aligned with the material and the desired particle shape.
Optional variable frequency drives and HAZconnect® monitoring support flexible process adjustment and transparent tracking of energy consumption and plant availability.
The HSI secondary impact crusher is designed in accordance with the applicable European machinery directives and applicable statutory requirements.
Maintenance-friendly access points, E-stop circuits and hydraulically operated opening systems ensure high safety during ongoing operation as well as during maintenance and service work.
Highlights:
- Protection and locking systems with sensor monitoring
- Hydraulic overload system for protection of the rotor against tramp material
The HSI secondary impact crusher can be seamlessly integrated into existing processing lines and performs secondary crushing between the primary stage and screening.
HAZEMAG supports you in the design of material flow, mechanical integration and automation to ensure a stable and efficient process.
Typical flow:
Material feed → HSI → Screen → Conveying system
Interfaces:
- Control: HAZtronic®, SCADA/PLC integration
- Mechanics: Inlet/outlet hoppers, chutes, bunker connections
- Signals: Process/fault messages, operating data
The HSI series is designed for economical operation over its entire service life. Energy-efficient design, optimized wear components and short maintenance times reduce operating costs.
Based on your process data, an individual economic evaluation is prepared, taking into account energy consumption, wear and maintenance effort.
Typical input values:
- Throughput: {t/h}
- Operating hours: {h/year}
- Energy price: {kWh price}
- Wear costs: {€/t}
Questions and Answers about the SECONDARY IMPACT CRUSHER HSI
A secondary impact crusher is used in the second crushing stage to further process pre-crushed material in a controlled manner. The objective is to optimize particle size distribution and particle shape for downstream screening or tertiary processes.
A grinding path allows the targeted limitation of oversize material. This results in narrower particle size ranges, reduced recirculation loads in the screening circuit and improved control of the final product size.
Particle shape is influenced by the geometry of the crushing chamber, the settings of the impact aprons and the rotor and blow bar design. These factors allow targeted control of particle cubicity in the secondary crushing stage.
HAZEMAG develops and supplies machines and systems for processing raw materials and bulk solids, including engineering, commissioning and service.
Yes. HAZEMAG provides after-sales service, maintenance support and genuine spare and wear parts through HAZparts to help maintain long-term plant availability.
Yes. HAZEMAG supports you from equipment sizing and integration into the plant layout through to commissioning and optimization during operation.
Take the next step with us: get in touch for your impact crusher solution!
At HAZEMAG, we are ready to work with you to develop bespoke solutions tailored precisely to your requirements. Our team of experts is on hand to help you optimise your crushing processes. Contact us today so that together we can find the ideal impact crusher solution to ensure your success.
