1. Overview

The Amisy Feed Hammer Mill is a core grinding device engineered for medium-to-large feed plants, food processing enterprises, and agricultural workshops. It specializes in crushing solid grains (corn, wheat, soybean, rice husk, etc.) into uniform powder—laying the foundation for high-quality feed pellet production.

With advanced structural design, mature manufacturing technology, and reliable performance, it addresses the key demand for “efficient, precise, and durable grinding” in the feed industry. Its ability to handle both coarse and fine grinding, paired with low energy consumption, has made it a staple in the global feed crushing market.

2. Core Value: Why It’s Indispensable in Feed Production

Grinding is the first critical step in feed manufacturing—powder fineness directly affects pellet quality, nutrient digestibility, and downstream equipment lifespan. The feed hammer mill delivers three irreplaceable values:

2.1 Ensure Uniform Powder for High-Quality Pellets

Uneven powder (mixed coarse/fine particles) leads to loose pellets, uneven nutrient distribution, and high waste. The mill’s scientific hammer arrangement and precise hammer-screen clearance produce uniform powder, ensuring dense, smooth pellets with consistent nutrition.

2.2 Protect Downstream Equipment

A built-in permanent magnet device removes metal impurities (nails, screws) from raw materials, preventing wear on pellet mill ring dies and rollers—extending downstream equipment service life by 20%+.

2.3 Adapt to Diverse Production Needs

It supports both coarse grinding (for ruminant feed) and fine grinding (for aquatic fry feed), with customizable sieve sizes. This versatility eliminates the need for multiple grinding machines, reducing equipment investment.

3. Working Principle: Efficient Crushing via Double-Stage Technology

The mill’s efficiency stems from its advanced twice-crushing technology and high-speed hammer rotation, creating a “impact-shearing-grinding” integrated effect:

1. Primary Crushing: Raw materials enter the grinding chamber, where high-speed rotating hammer blades (linear velocity 87-89m/s) impact and break large grains into coarse particles.
2. Secondary Refining: Coarse particles are further sheared and ground between the hammer blades and screen, passing through the sieve holes only when they reach the set fineness (controlled by sieve size).
3. Impurity Removal: The permanent magnet device adsorbs metal impurities during feeding, avoiding damage to hammer blades and downstream equipment.
4. Powder Discharge: Crushed powder is discharged via normal air flow (25-45m³/min), ensuring smooth material flow without blockages.

4. Core Features & Advantages

4.1 Stable & Durable Performance

• Imported Key Components: Adopts high-quality SKF bearings, which operate at low temperatures (≤70℃) and have a service life 3x longer than ordinary bearings—supporting 24/7 continuous production.
• Low Vibration: Rigid pedestal design reduces vibration amplitude by 40% compared to conventional mills, minimizing noise (≤85dB(A)) and workshop wear.

4.2 Precise & Versatile Grinding

• Dual Grinding Modes: Coarse grinding (sieve size ≥4mm) for cattle/sheep feed; fine grinding (sieve size ≤1mm) for fish/shrimp feed—one machine for multiple needs.
• Customizable Sieves: A variety of sieve sizes are available to match different feed types, ensuring powder fineness meets specific formula requirements.

4.3 High Efficiency & Energy Saving

• Direct Transmission: Adopts direct motor drive (no belt loss), improving energy utilization by 15% compared to belt-driven mills.
• Scientific Hammer Arrangement: Optimized hammer spacing and angle maximize impact force, achieving high output (3-7t/h) with low power consumption (22-45KW).

4.4 Safe & Easy to Maintain

• Simplified Maintenance: Hammer blades and sieves are quick to replace (no professional tools required), reducing downtime to ≤1 hour.
• Safety Design: Equipped with a safety interlock—the machine cannot start if the grinding chamber cover is open, preventing accidental injury.

5. Operation & Maintenance Guidelines

5.1 Safe Operation Cautions

1. Pre-Start Check: Ensure operators understand the machine structure and operation manual; inspect connections for looseness and clean the grinding chamber of residual material.
2. Uniform Feeding: Avoid sudden overload (e.g., dumping large batches at once) to keep the motor running under rated load—preventing overheating and burnout.
3. Abnormal Handling: Immediately stop the machine if strong vibration or unusual noise occurs; troubleshoot (e.g., unbalanced hammer blades, blocked sieve) before restarting.

5.2 Routine Maintenance

• Daily: Clean the sieve and grinding chamber to avoid powder buildup; check hammer blade wear.
• Weekly: Inspect SKF bearings and add lubricating oil (3# lithium grease); tighten loose fasteners.
• Monthly: Replace worn hammer blades (when edge wear exceeds 5mm) and damaged sieves to maintain grinding efficiency.

6. Technical Parameters

Model No.	Rotor Diameter	Spindle Speed	Hammer Blade Linear Velocity	Grinding Room Width	Hammer Blade Quantity	Power	Normal Air Flow	Output
AMS-ZW6A	φ560(φ570)mm	2980rpm	87-89m/s	360mm	48	22/37KW	25M³/min	3-5t/h
AMS-ZW40A	φ560(φ570)mm	2980rpm	87-89m/s	400mm	56	37/45KW	45M³/min	5-7t/h

7. Selection Suggestions

• Medium-Scale Feed Plants (3-5t/h): Choose AMS-ZW6A—balances output and energy consumption, fits 1-3t/h pellet production lines.
• Large Feed Factories (5-7t/h): Select AMS-ZW40A—high capacity, supports 5-10t/h automated lines, paired with large-scale mixers.
• Fine Grinding Needs (Aquatic Feed): Equip with 0.8-1.2mm sieves for fish/shrimp feed powder.
• Coarse Grinding Needs (Ruminant Feed): Use 3-4mm sieves for cattle/sheep feed to retain fiber.