Legumes are technically classified as granular materials. Their industrial packaging requires equipment with high weighing accuracy, suitable production speed and compatibility with different grain sizes. A legume filling machine, also known as a granule filling machine, is designed to fill bags with products such as chickpeas, beans, lentils, split peas and mung beans in industrial production lines.
In this guide, we examine the main types of legume filling machines, the differences between single weighing and double weighing models, essential supporting equipment for a complete packaging line and the main factors to consider before purchasing a machine.
Key Points
- Legumes are technically granular materials, so a granule filling machine can also be used as a legume filling machine.
- Choosing between a single weighing and a double weighing model is one of the most important decisions when purchasing this type of equipment.
- A complete legume packaging line normally requires an elevator, conveyor and bag sewing machine in addition to the filling machine.
- Weighing accuracy directly affects production cost, customer satisfaction and regulatory compliance.
- The price of the machine depends on its technical specifications, capacity, automation level and selected model.
What Is a Legume Filling Machine and How Does It Work?
A legume filling machine is an industrial bag filling machine that operates using a weighing system. Granular materials enter the weighing section from the upper hopper. The target weight is set through the control system and touch screen. Once the required weight is reached, the discharge gate opens and the material is released into the bag.
The control process is designed around three feeding speeds. First, most of the material is discharged at high and medium speeds. The final portion is then added at a slower speed to reach the target weight accurately. This mechanism helps minimise weighing errors. Three digital sensors also provide additional monitoring of the weighing process.
Since legumes are granular materials, all Dara Electronic Granule Filling Machines can be used for their packaging. These machines differ from powder and liquid filling machines mainly in the design of the discharge gate, hopper angle and sensor configuration.
Which Products Can Be Filled With a Legume Filling Machine?
A granule filling machine can handle a broad range of granular materials. Common applications in the food and legume industries include:
- Dry legumes: Chickpeas, red beans, pinto beans, lentils, split peas, mung beans and broad beans
- Grains and rice: White rice, brown rice and corn kernels
- Oilseeds: Sunflower seeds, sesame seeds and pumpkin seeds
- Livestock, poultry and aquatic feed: Pellets and granular animal feed
- Other industrial granular materials: Sugar cubes, coarse salt and sugar
Important: Grain size and material density influence the choice of machine. Specialised models are available for rice, which can be seen in the video below.
What Types of Legume Filling Machines Are Available?
Dara Electronic manufactures several granule filling machine models for different industrial applications. The table below provides a general comparison.
| Machine Model | Main Application | Suitable For |
| Single Weighing Granule Bag Filling Machine | General legumes | Medium capacity lines |
| Double Weighing Granule Bag Filling Machine | Legumes and different granular products | High capacity lines |
| Gross Weight Granule Filling Machine | Products requiring tighter weight tolerance | Industries requiring high accuracy |
| Granule Jumbo Bag Filling Machine | Large bags from 500 to 1500 kg | Bulk storage and export |
| Single Weighing Rice Filling Machine | Rice | Rice processing factories |
| Double Weighing Rice Filling Machine | Rice | High capacity rice lines |
| End of Line Single Weighing Rice Filling Machine | Rice at the end of the production line | Integration with existing production lines |
Single Weighing Granule Bag Filling Machine
This model operates with one hopper and one weighing system. It requires less installation space and is suitable for medium capacity production lines. Its automated operation reduces the need for direct operator involvement.
Double Weighing Granule Bag Filling Machine
This model uses two weighing units to increase production capacity. It is designed for larger legume processing factories where higher output is required.
Gross Weight Granule Filling Machine
In a gross weight system, the empty bag and its contents are weighed during the filling process. This method is suitable for applications where accurate control of the final bag weight is important.
Granule Jumbo Bag Filling Machine
This model is designed for filling bulk bags from 500 to 1500 kg. It is suitable for bulk legume storage, export operations and transferring raw materials between production stages.
Single Weighing Rice Filling Machine
This model is designed specifically for rice, which can be sensitive to breakage during handling and filling.
Double Weighing Rice Filling Machine
The double weighing rice model provides higher production capacity and is suitable for rice factories with high output requirements.
End of Line Single Weighing Rice Filling Machine
This machine is installed at the end of a rice processing line and can be integrated with existing equipment. It is suitable for factories that want to upgrade their packaging system without replacing the complete production line.
Single Weighing or Double Weighing: Which Is Better?
The answer depends on required production capacity, available budget and factory space.
Choose a single weighing filling machine if:
- Your required production capacity is below 5 tonnes per hour.
- You have limited installation space.
- You want to control the initial investment cost.
- Your production line operates for limited shifts.
Choose a double weighing filling machine if:
- You require high production capacity and your line operates continuously.
- You need greater production capacity from the weighing section.
- You package several products with different target weights.
- Your factory is planning to expand its production capacity.
A double weighing machine normally has a higher purchase price, but it also offers higher output. The financial value of this additional capacity depends on production volume, operating hours, labour costs and the efficiency of the existing packaging line.
Why Is Weighing Accuracy Important in Legume Packaging?
Weighing accuracy in a legume packaging line is both a technical and commercial requirement.
From a regulatory perspective: Packaged food products must meet applicable weight and labelling requirements. Significant differences between the declared package weight and actual weight may create regulatory problems.
From a financial perspective: Even a small amount of excess product in every bag can create substantial losses at high production volumes. For example, if every bag contains 5 grams of additional product and the factory produces 1,000 bags per day, 5 kg of product is given away each day.
From a commercial perspective: Uniform bag weights demonstrate better process control and can support buyer confidence.
Dara Electronic granule filling machines use precise control systems, touch screen interfaces and digital weighing sensors to manage filling accuracy during production.
Which Supporting Equipment Is Required for a Legume Filling Line?
A filling machine on its own does not form a complete industrial packaging line. Three supporting systems are commonly required.
Elevator
The Industrial Elevator transfers legumes from floor level to the inlet hopper of the filling machine.
Without an elevator, materials may need to be fed manually, which can reduce production speed and increase labour requirements.
Dara Electronic elevators are available with nominal capacities of 3 or 6 tonnes per hour. Elevator capacity should be matched with the filling machine capacity to avoid creating a production bottleneck.
Conveyor
The Conveyor transfers filled bags from the discharge point of the filling machine towards the bag sewing machine.
Without a conveyor, operators must move each bag manually, which can increase worker fatigue, reduce production speed and increase manual handling risks.
Dara Electronic conveyors are commonly supplied as supporting equipment for filling machinery and can be configured according to production line requirements.
Bag Sewing Machine
The Industrial Bag Sewing Machine completes the final stage of the packaging line by closing the top of the filled bag.
The machine uses sensors to start the sewing process when the top of the bag enters the sewing section.
The sewing machine stand can be adjusted for different bag heights. Sewing quality plays an important role in protecting the packaged product during transport and storage.
Recommended Legume Filling Line Configuration:
Elevator → Filling Hopper → Weighing and Filling Machine → Conveyor → Bag Sewing Machine
For further information about selecting these systems, read 6 Important Points Before Buying a Granule Filling Machine.
What Determines the Price of a Legume Filling Machine?
The price of a legume filling machine varies according to its configuration. A fixed price cannot be applied to every project.
The main factors affecting price include:
| Factor | Description |
| Machine Model | Single weighing, double weighing, gross weight or jumbo bag model |
| Automation Level | Fully automatic or semi automatic |
| Production Capacity | Bags per hour or tonnes per hour |
| Machine Material | Stainless steel or standard industrial steel |
| Component Brand and Quality | Load cells, sensors, weighing system and industrial controller |
| Supporting Equipment | Elevator, conveyor and bag sewing machine |
| Product Type | Specialised rice models may cost more than general granule filling machines |
For an accurate quotation based on your production requirements, contact Dara Electronic specialists. Providing information such as product type, required capacity, target bag weight and available factory space allows the technical team to recommend a more suitable configuration.
What Should You Consider When Buying a Legume Filling Machine?
1. Determine Your Actual Capacity Requirement
First, calculate the hourly or daily production capacity required by your factory. Selecting a machine with insufficient capacity can create a production bottleneck, while purchasing excessive capacity can increase unnecessary capital expenditure.
2. Consider the Physical Characteristics of the Product
Grain size, density and product fragility directly affect machine selection. Rice and chickpeas, for example, may require different handling configurations.
3. Plan the Complete Packaging Line
Purchasing only the filling machine may not be sufficient. The elevator, conveyor and bag sewing machine should be considered during the initial design and budgeting process.
4. Consider Installation, Support and Operator Training
Industrial machines require correct installation and operator training. Check whether the supplier provides installation, commissioning and training services.
5. Consider Future Expansion
If your factory has expansion plans, select equipment that can support higher production capacity or integration with additional machinery in the future.
6. Compare Warranty and Sales Conditions
Warranty coverage, payment terms and access to spare parts are important factors when selecting a supplier.
Dara Electronic provides instalment payment options to support customers planning industrial equipment investment.
Build Your Legume Filling Line With Technical Guidance
Selecting the right legume filling machine is an investment that can affect production efficiency, operating costs and final packaging quality for many years.
The range of Dara Electronic Granule Filling Machines covers different production requirements, from medium capacity packaging lines to large industrial factories.
Before making a final decision, read 6 Important Points Before Buying a Granule Filling Machine. You can then contact Dara Electronic specialists to discuss your product type, required production capacity and available budget.
Frequently Asked Questions
What Is the Difference Between a Legume Filling Machine and a Granule Filling Machine?
There is no fundamental difference in this application. Legumes are technically classified as granular materials, so granule filling machines are used to fill bags with legumes.
Can One Filling Machine Handle Different Types of Legumes?
Yes. Most granule filling machines can be configured for products with different sizes and densities by adjusting weighing and control parameters.
However, specialised models may be recommended for sensitive products such as rice.
What Is the Standard Capacity of a Legume Filling Machine?
Capacity depends on the machine model. Single weighing machines are generally suitable for medium capacity production, while double weighing models are designed for higher output.
For the exact capacity of each machine, contact Dara Electronic specialists.
Can a Filling Machine Be Purchased Without an Elevator and Conveyor?
Technically, yes. However, this configuration may reduce overall production efficiency.
Without an elevator, the filling machine may require manual material feeding. Without a conveyor, filled bags must be moved manually.
Designing the packaging line as one integrated system can improve overall production flow.
When Is a Granule Jumbo Bag Filling Machine a Better Choice?
A jumbo bag filling machine is suitable when legumes or other granular products are packed in large bags from 500 to 1500 kg for storage, transportation or export.
It is not designed for standard retail packaging.
Does Dara Electronic Provide Installation and Training?
Yes. Dara Electronic specialists provide installation, commissioning and machine operation training.
How Much Does a Legume Filling Machine Cost?
The price depends on the machine model, automation level, production capacity and supporting equipment.
Dara Electronic also offers instalment payment options. For an accurate quotation, contact the sales or technical team.
