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hydraulic ring die pellet machine


A hydraulic ring die pellet machine is a pelletizing machine that utilizes a hydraulic system as its power source. Unlike traditional diesel

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hydraulic ring die pellet machine Introduction

A hydraulic ring die pellet machine is a pelletizing machine that utilizes a hydraulic system as its power source. Unlike traditional diesel or electric pellet machines, the power system of a hydraulic ring die pellet machine employs a hydraulic pump to provide power and operates the die and rollers through a hydraulic system. This type of pellet machine is typically used for processing pellet production tasks requiring higher pressure and power, offering characteristics such as high yield, high efficiency, and strong stability. Due to the use of a hydraulic system, hydraulic ring die pellet machines generally operate smoother during operation, while also exhibiting lower noise levels and more precise compression control.(Similar news:What Is The Structure Of Hydraulic Ring Die Pellet Machine>>)

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Features of hydraulic ring die pellet machine

Precise Pressure Control

The hydraulic system provides accurate and adjustable pressure, which is crucial for tailoring the pelletizing pressure to the characteristics of different raw materials.

Automatic Wear Compensation

Some hydraulic ring die pellet mills are equipped with automatic wear compensation, maintaining constant pressure to ensure consistent pellet quality.

High-Efficiency Production

The hydraulic drive offers robust power, enabling high-capacity production.

Ease of Operation

The hydraulic system allows for automated operations, reducing manual intervention and simplifying the machine operation.

Low-Noise Operation

The use of a hydraulic system results in quieter operation, providing a more peaceful working environment.

Low Maintenance Costs

The precision design of the hydraulic system reduces wear and extends the life of machine components, lowering maintenance costs.

Strong Adaptability

Capable of processing various types of materials, including biomass and feedstock.

Energy-Efficient and Environmentally Friendly

The high energy conversion efficiency of the hydraulic system contributes to energy-saving production.

Good Stability

The hydraulic system’s stability ensures long-term, reliable operation of the machine.

Compact Design

Hydraulic components are typically compact, allowing for a more streamlined overall machine design.

Ease of Integration

Hydraulic ring die pellet mills can be easily integrated with other production equipment to form a complete production line.

High Safety

The hydraulic system often includes multiple safety features such as overload protection and emergency stop functions, enhancing the safety of the equipment.

Adjustable Output

By adjusting the hydraulic pressure, the machine can meet different production demands and flexibly adjust output.

Energy Saving and Consumption Reduction

The high energy conversion efficiency of the hydraulic system helps to achieve energy savings and reduce production costs.

Balanced Wear of Die and Rollers

The hydraulic system ensures even wear of the die and rollers, prolonging the service life of the equipment.

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Structure of hydraulic ring die pellet machine

Feeding System

Comprises a feeder and a variable speed motor, responsible for uniformly conveying raw materials into the pellet mill.

Conditioning Unit

Preheats and moistens the raw materials to enhance pellet quality.

Pelletizing Chamber

Includes a die and rollers, which are the core components of the pellet mill, responsible for pressing raw materials into pellets.

Main Drive System

Includes a gear box, shafts, and transmission wheels, responsible for transferring power to the working parts.

Hydraulic System

Consists of a hydraulic pump, control valves, and cylinders, used to provide and regulate the compaction force.

Lubrication System

Ensures that all machine components are properly lubricated to reduce wear.

Control Panel

Contains electrical control elements for operating and monitoring the equipment’s operation.


Provides stable support for the entire machine.


Removes iron impurities from the material to protect the internal parts of the machine.

Cutting Knife

Cuts the extruded pellets to the required length.


Connects the motor to the working parts, transmitting torque.

Main Motor

Provides power for the entire pelletizing process.


One of the primary working components of the pellet mill, used for forming pellets.


Work in conjunction with the die to apply pressure to the material, aiding in pellet formation.

Feeding Scraper

Assists in the feeding process, ensuring smooth entry of material into the pelletizing area.


Typically used to protect the pelletizing chamber and facilitate maintenance and cleaning.


Reduces the motor speed to match the working speed of the pellet mill.


Holds raw materials awaiting processing.

Discharge Gate

Controls the material flow rate from the hopper.

Limit Switch

Used to control the start and stop of the machine.

Hydraulic Cylinder

Adjusts the pressure between the rollers and the die as needed.

Hydraulic Control Unit

Includes a hydraulic pump, control valves, and hydraulic lines, used for precise control of the hydraulic cylinder’s pressure.

Cooling System

Sometimes includes a cooling section to cool and solidify the newly formed hot pellets.

Advantages of hydraulic ring die pellet machine

High Pressure and Power

Hydraulic systems provide greater pressure and power, enabling the pellet machine to handle high-density and high-strength materials, thus improving production efficiency and pellet quality.

Precise Compression Control

Hydraulic systems offer precise compression control, allowing for adjustments in compression force as needed to ensure consistent pellet shape and density.

Stability and Reliability

Hydraulic ring die pellet machines typically exhibit high stability and reliability during operation, ensuring consistent production quality and efficiency.


Due to the high pressure and power provided by hydraulic systems, these machines are suitable for processing high-power pellet production tasks.

Smooth Operation

The use of hydraulic systems results in smoother operation of the pellet machine, reducing vibration and noise levels.

Applicability to High-Power Tasks

Hydraulic ring die pellet machines are typically suitable for processing high-power pellet production tasks.


Hydraulic ring die pellet machines can process a variety of materials, including biomass, wood waste, etc., demonstrating strong applicability.

Energy Efficiency and Environmental Friendliness

Hydraulic ring die pellet machines have high energy efficiency, reducing energy consumption. Additionally, the pellets produced are renewable green energy products, meeting environmental requirements.

Ease of Maintenance

These machines usually have simple structures and maintenance procedures, making maintenance and upkeep easier and reducing maintenance costs and downtime.

Classification of ring die pellet machine

Based on their structure and application characteristics, ring die pellet machines can be classified in various ways:

Vertical Ring Die Pellet Machine

In this type of ring die pellet machines, the die is vertically installed, typically suitable for pelletizing biomass fuels such as wood chips and straw. Vertical ring die pellet machines feature vertical die orientation, vertical feeding, efficient heat dissipation, and smooth operation.

Horizontal Ring Die Pellet Machine

In contrast to the vertical type, the die of the horizontal ring die pellet machines is horizontally installed, suitable for pelletizing various feeds and biomass materials.

Flat Die Pellet Machine

Although similar to ring die pellet machines in some aspects, flat die pellet machines exhibit distinct structural differences. Flat die pellet machines are typically more cost-effective and suitable for small-scale and household farms due to their simplicity of operation.

Electric Ring Die Pellet Machines

Powered by an electric motor.

Diesel Ring Die Pellet Machines

Powered by a diesel engine, suitable for areas without electricity supply.

Hydraulic Ring Die Pellet Machine

Utilizes a hydraulic system as the power source, generally suitable for processing high-power pellet mills.

Parameter of ring die pellet machine

Model Capacity Main Motor Power Feeder Motor Power Conditioner Power Dia. of Ring Die Pellet Size
SZLH250 1-2T/H 22KW 0.75kw 1.5kw 250mm 2-12mm
SZLH320 3-4T/H 37KW 1.5kw 2.2kw 320mm 2-12mm
SZLH350 5-7T/H 55KW 1.5kw 3kw 350mm 2-12mm
SZLH420 8-12T/H 110KW 1.5kw 7.5kw 420mm 2-12mm
SZLH508 10-18T/H 160KW 2.2kw 11kw 508mm 2-12mm
SZLH558 15-25T/H 180KW 2.2kw 11kw 558mm 2-12mm
SZLH678 20-30T/H 220KW 2.2kw 11kw 678mm 2-12mm
SZLH768 25-42T/H 280KW 2.2kw 11kw 768mm 2-12mm

After-sale Service

  • – HKB provides advanced grain safety storage technology to assure your grain silo 100% quality stability.
  • grain silo Quality guarantee is one year after installation and commissioning or 18 months after leaving China Port. Maturity is the first.
  • – 7 days x 24 hours service, within 24 hours reply/solve of any technical issues upon request.
  • – Routinely telephone track to remove all might be problems grain silo or issues guarantying the whole system grain silo long-lasting safety and reliability.
  • – HKB will consider all other needs like customs clearance, sea delivery, insurance, customs tax benefit plan, documentation, etc. So our respected Users feel so relaxed and easy to get the grain silo system well.
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