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diesel ring die pellet machine


A diesel ring die pellet machine is a type of pellet machine powered by a diesel engine. It typically consists of a ring-shaped die and rollers

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diesel ring die pellet machine Introduction

A diesel ring die pellet machine is a type of pellet machine powered by a diesel engine. It typically consists of a ring-shaped die and rollers, capable of compressing raw materials into pellet form. This type of pellet machine is suitable for processing various biomass and feed materials, particularly in areas without access to electricity. Due to its diesel engine power source, it can reliably operate in various working environments without relying on the power grid.(Similar news:What Is The Function Of Diesel Ring Die Pellet Machine>>)

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Characteristics of diesel ring die pellet machine

Power Source

Operates using a diesel engine for power, making it suitable for areas with limited or unstable electricity supply.


Diesel pellet mills are often designed with a portable structure, facilitating on-site production and easy relocation between different locations.

Ease of Operation

Equipped with user-friendly control systems, these mills are straightforward to operate and maintain, allowing even non-specialists to manage them efficiently.

Production Capacity

These mills deliver a consistent production capacity, meeting the needs of various production scales.

Molding Quality

High-pressure molding processes produce uniform and dense pellets, which are easier to transport and store.

Energy Efficiency

Diesel engines are known for their fuel efficiency, resulting in lower operating costs compared to other power sources.


Capable of processing a wide range of biomass materials, including wood shavings, straw, rice husks, and bark, to create high-density pellet fuel.

Economical and Practical

In some scenarios, diesel pellet mills are more cost-effective than electric models, especially in areas where electricity is scarce or unavailable.

Low Maintenance

Diesel engines are typically robust and easy to service, reducing long-term operational costs.

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The structure of diesel ring die pellet machine

Power System

The diesel engine serves as the primary power source, providing the energy required for the operation of the entire machine. Compared to electric-driven systems, diesel engines offer better mobility and adaptability, making them suitable for outdoor or locations with unstable power supply.

Feeding System

Typically consisting of a hopper and a screw feeder (or feeding screw), it uniformly and continuously delivers raw materials into the pellet mill. The feeding rate can be adjusted to match the overall production rate as needed.

Conditioning System

This may include a conditioner, used to add steam or moisture during the feeding process for pre-treating the raw materials, raising their temperature and humidity to aid in forming and improving the physical properties of the pellets.

Pelleting Chamber

The core component containing the ring die, rollers, and pelletizing knives. The ring die is covered with small holes through which the raw materials are compressed under high pressure to form elongated strips, which are then cut into fixed-length pellets by the cutter assembly.

Cutter Assembly

Located at the exit of the ring die, it is used to cut the continuously extruded elongated materials into pellets of the desired length.

Cooling System

The pellets have a high temperature after pelleting. They are rapidly cooled by the cooling system (such as cooling fans or counter-flow coolers) to enhance pellet hardness for storage and transportation.

Screening Device (Optional)

Used to separate out unqualified pellets, ensuring consistent product quality.

Transmission System

Comprising pulleys, chains, gearboxes, etc., it is responsible for transmitting the power from the diesel engine to various working components.

Lubrication System

Automatic or manual lubrication points ensure lubrication of the running components of the machine, reducing wear.

Control System

Modern equipment may be equipped with an electronic control panel, controlling engine start/stop, fault display, alarms, etc., improving operational convenience and safety.

Advantages of diesel ring die pellet machine

Energy Independence

Using diesel as a power source allows the equipment to operate normally in remote areas or where the power supply is unstable, making it particularly suitable for biomass energy production in remote regions.

High Mobility

Most diesel ring die pellet machines are designed with wheeled bases, facilitating movement and transportation. They can be quickly relocated to different locations for operation or brought closer to the source of raw materials, enhancing production flexibility.

Production Efficiency

Diesel engines typically provide strong power, supporting long periods of continuous operation to ensure high output. They are suitable for the rapid production demands of large-scale biomass pellets.

Strong Adaptability

Diesel engines have a wide power range, allowing for the selection of suitable models based on actual production scale, meeting the needs of biomass pellet production projects ranging from small to large scale.

Environmental Adaptability

Diesel engines can operate stably in various environmental conditions, whether cold or hot weather, ensuring equipment operation and reducing downtime caused by climate factors.

Easy Maintenance

Although diesel engines may require more maintenance compared to electric motors, modern diesel ring die pellet machine designs typically consider convenient maintenance, such as quick filter replacement and oil checks, making them easy to operate.


While the initial investment may be higher, considering that diesel engine energy costs may be lower in some areas, long-term operating costs are reasonable, especially advantageous in areas without electricity or with high electricity prices.

Stability and Reliability

Diesel engine technology is mature, with low failure rates, ensuring stable output even in harsh conditions, reducing production interruptions and ensuring continuous production efficiency.

Environmental Contribution

The biomass pellets produced are renewable energy sources, replacing fossil fuels, reducing greenhouse gas emissions. Using diesel ring die pellet machines to produce biomass pellets indirectly promotes the transition to green energy.

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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