Hammer Mill

The ASTW hammer mill is designed for grinding dried fish meal and similar animal feed material, with the main purpose of making a homogeneous meal product. Fibres and coarse particles are cut by the rotating hammers and pass through the perforated screen plate with holes of requisite size according to demand

 

Through many years of experience, processing machinery to this industry, ASTW has given special attention to design and construction of a hammer mill that stands well up to the requirements and demands of handling material within a great range of varied qualities.

 

Due to the simple and sturdy construction throughout, the ASTW mills present an attractive and compact appearance. They are easy to operate, have a characteristic smooth running and require little attention during operation.

The upper cover is hinged and easy to open when desired for inspection, eleaning, replacement of screen plate and or / hammers.

 

Special exchangeable arinding and wearing plates are provided inside the housing.

 

The screen plate lies loosely in a supporting groove in the side walls of the lower section. When the upper section is opened up, the screen plate is released and becomes easily accessible, and a new screen plate can be set in without the use of tools. The size of the holes in the perforated plate is selected according to the type of meal to be ground and, if necessary, may be adjusted to satisfy special requirements.

 

The ample screening area gives a rapid passage of the smaller meal particles, thus keeping the portion of fines (dust) to a minimum.

The upper cover is hinged and easy to open when desired for inspection, eleaning, replacement of screen plate and or / hammers.

 

Special exchangeable arinding and wearing plates are provided inside the housing.

 

The screen plate lies loosely in a supporting groove in the side walls of the lower section. When the upper section is opened up, the screen plate is released and becomes easily accessible, and a new screen plate can be set in without the use of tools. The size of the holes in the perforated plate is selected according to the type of meal to be ground and, if necessary, may be adjusted to satisfy special requirements.

 

The ample screening area gives a rapid passage of the smaller meal particles, thus keeping the portion of fines (dust) to a minimum.

The rotor with its plates and spacers, hammers and pertaining bolts built on a rigid shaft, runs in spherical roller bearings embedded in dustproof housing mounted on the solid brockets welded onto the side walls.

 

The hammers as well as the bolts are made of a special steel alloy hardfaced to give high resistance to wear and tear. Further the hammers are provide with two holes in both ends and can be placed on the bolts in four different positions, thus prolonging their life four times.

 

When in operation the hammers remain in a radial position due to the centrifugal force present, and because of the free suspension to the rotor, they act as cutters when hitting the product.

Technical Specification: Hammer Mill
Type
M 3
M 7
M 21
M 33
M 44
Capacity (ton/hr.)
0.65
1
2
2.3
3.5
Inner dia.
250
300
300
355
355
RPM
1450
1450
1450
1450
1450
kW.
11
22
22
30
45
ASTW disc dryers have more distance between the discs for:
APPLICABLE FOR

Case Studies

Proven success across 300+ installations worldwide. Discover how ASTW’s turnkey fishmeal and rendering solutions have helped global clients achieve superior efficiency, reduce operational costs, and exceed environmental compliance standards.

Processing Ltd.

ASTW delivered a turnkey fishmeal plant in eastern Thailand, designed for lean fish and marine by-products. The project included full installation, energy-saving systems, and odor control to comply with local environmental regulations. Key Equipment 3-Phase Decanter LTR Disc Dryer Preheater Twin Screw Press WHE

FAQ

Proven success across 300+ installations worldwide. Discover how ASTW’s turnkey fishmeal and rendering solutions have helped global clients achieve superior efficiency, reduce operational costs, and exceed environmental compliance standards.

Our fishmeal and rendering plants process various raw materials including fish waste and by-products, poultry offal and feathers, beef and pork by-products, mixed animal waste, and seafood processing waste. Each plant is customized for specific material types to ensure optimal processing efficiency and product quality.

Yes, ASTW delivers complete turnkey solutions including engineering design, equipment manufacturing, worldwide shipping, on-site installation, system commissioning, operator training, and ongoing technical support. Our 40+ certified technicians handle projects from concept to full operation across 36+ countries.

We provide comprehensive 24-month equipment warranty, 5-year major component guarantee, lifetime technical support, global spare parts availability, preventive maintenance programs, and 24/7 emergency service. Our service network ensures minimal downtime and maximum plant performance.

Absolutely. Our plants include advanced odor control systems (biofilters, scrubbers, thermal oxidizers), environmental monitoring equipment, waste heat recovery systems, and compliance with international environmental standards including EU, EPA, and local regulations worldwide.

Emergency spare parts are available within 24-48 hours for critical components through our global distribution network. Standard parts ship within 5-7 business days. We maintain strategic inventory locations in Asia, Europe, and Americas to ensure rapid delivery worldwide.

Our plants range from 50 tons/day for smaller operations to 600+ tons/day for large-scale industrial facilities. We design custom solutions based on your raw material volume, product requirements, site conditions, and future expansion plans.