Onion Powder Production Line | 100–500 kg/h
Industrial Onion Powder Processing Line | Onion Powder Making Line | Onion Powder Production Equipment
An onion powder production line is an integrated processing system designed to convert fresh onions into dried, ground onion powder. It handles the full workflow from raw material preparation to final packaging. A standard line processes 100–500 kg of finished onion powder per hour, depending on the machine configuration.

The complete line includes onion root cutting, peeling, slicing, drying, grinding, and packaging equipment. Each stage is matched to the required capacity. This solution is suitable for seasoning manufacturers, dehydrated food processors, spice exporters, and food ingredient suppliers who need stable commercial output.
Compared with buying separate machines, Shuliy’s integrated onion powder making machine system saves installation time, reduces material handling, and keeps each stage running at the same speed. The line uses food-grade stainless steel contact surfaces and supports voltage customization for different countries.


Complete Onion Powder Production Process
The standard onion powder processing line includes six main stages:
- Onion root cutting — removes tops and roots.
- Onion peeling — removes dry outer skins.
- Onion slicing — cuts onions into thin, even slices.
- Drying — reduces moisture for long storage.
- Grinding — turns dried slices into fine powder.
- Packaging — packs powder into sealed bags.
Each stage uses
Each stage uses a dedicated machine. When connected properly, the line runs continuously from raw onion to finished package.
Onion Powder Production Line Equipment and Technical Specifications
Onion Root Cutting Machine
This machine removes the top and root of each onion. It uses semi-automatic induction cutting and supports continuous feeding.
| Parameter | Specification |
|---|---|
| Machine type | Semi-automatic |
| Capacity | 500 kg/h |
| Power | 1,500 W |
| Voltage | AC 380V, 3 phase, 50/60 Hz |
| Dimensions | 280 × 80 × 140 cm |
| Weight | 360 kg |
| Material | Stainless steel |
| Onion diameter | ≥ 5 cm |


Onion Peeling Machine
The chain-type peeling machine removes dry skins using compressed air. It handles medium-to-large bulbs and keeps cloves intact.
| Parameter | Specification |
|---|---|
| Type | Chain-type pneumatic peeler |
| Capacity | Up to 1,000 kg/h |
| Peeling rate | 95–98% |
| Voltage | 110V / 220V / 380V |
| Material | SUS304 stainless steel |
| Peeling method | Dry pneumatic peeling |


Onion Slicing Machine
The onion ring cutting machine cuts peeled onions into even rings or slices. Slice thickness is adjustable.
| Parameter | Specification |
|---|---|
| Model | SL-30 |
| Capacity | 300–500 kg/h |
| Voltage | 220V / 50Hz |
| Power | 0.75 kW |
| Dimensions | 720 × 620 × 1020 mm |
| Feed hole sizes | 55 / 70 / 90 / 100 mm |
| Slice thickness | ≥ 1 mm |


Onion Drying Machine
The industrial drying room uses hot air circulation to dry onion slices evenly. Temperature and humidity are controlled automatically.
| Parameter | Specification |
|---|---|
| Type | Box-type drying room |
| Capacity | 300–8000 kg/batch |
| Heating options | Electric, heat pump, coal |
| Material | Stainless steel chamber and trays |
| Control | Automatic temperature and humidity |
For an onion powder line with 100–500 kg/h final output, a medium-sized drying room such as the SL-4 or SL-6 model is usually selected.


Onion Grinding Machine
The powder grinder turns dried onion slices into fine powder. Fineness can be adjusted by changing the sieve.
| Parameter | Specification |
|---|---|
| Model | SL-B series |
| Capacity | 20–3000 kg/h |
| Fineness | 20–120 mesh |
| Motor power | 2.2–37 kW |
| Feeding size | 6–15 mm |
| Material | Food-grade stainless steel |
For onion powder, the final fineness is usually 60–120 mesh.


Onion Powder Packing Machine
The packaging machine fills and seals onion powder bags automatically.
| Parameter | Specification |
|---|---|
| Model | SL-450 |
| Voltage | 220V 50Hz, single phase |
| Power | 2.4 kW |
| Bag width | 80–190 mm |
| Bag length | 90–310 mm |
| Filling range | Less than 1,000 g |
| Sealing type | Back sealing |
| Packing speed | 10–40 bags/min |
| Dimensions | 1150 × 750 × 1950 mm |

Onion Powder Processing Line Functions Explained
Onion root cutting
The onion root cutter removes tops and roots using semi-automatic induction cutting. It handles onions from 5 cm diameter upward and reaches 500 kg/h. Clean cuts make peeling easier in the next stage.
Onion peeling
The chain-type peeling machine uses dry pneumatic force to remove outer skins. Peeling rate reaches 95–98%. No water is used, so the material stays dry before slicing.
Onion slicing
The SL-30 onion ring cutting machine slices peeled onions into rings or flat slices. Slice thickness is adjustable from 1 mm. Four feed hole sizes (55/70/90/100 mm) handle different onion sizes.
Onion drying
The industrial drying room removes moisture using hot air circulation. Temperature and humidity are controlled automatically. For a 100–500 kg/h powder line, the SL-4 or SL-6 dryer is usually selected.
Onion grinding
The SL-B series grinder pulverizes dried onion slices into powder. Fineness ranges from 20 to 120 mesh. For commercial onion powder, 60–120 mesh is common.

Onion powder packaging
The SL-450 packing machine fills bags from 80–190 mm wide and 90–310 mm long. Back sealing protects the powder from moisture. Speed reaches 10–40 bags per minute.
Raw Materials and Applications
Main raw material
Fresh onions, including yellow, red, and white varieties.
Final products
- Dehydrated onion powder
- Onion flakes
- Onion granules
- Seasoning blends
Industries served
- Spice and seasoning manufacturing
- Dehydrated vegetable processing
- Instant soup and sauce production
- Food ingredient exporting
- Catering supply and central kitchens
Key Advantages of the Onion Powder Production Line
Continuous workflow
Each machine feeds into the next. This reduces material handling and keeps production moving.
Adjustable final powder fineness
The grinder can produce 20–120 mesh powder. You can target different markets by changing the sieve.
Food-grade construction
Key machines use 304 stainless steel. This meets hygiene standards and simplifies cleaning.
Flexible capacity
The line can be configured for 100 kg/h, 300 kg/h, or 500 kg/h depending on your budget and market demand.
Multiple heating options for drying
Choose electric, heat pump, or coal heating based on local energy cost and environmental rules.
Low labor input
Automation replaces most manual cutting, peeling, and packing work.
Who Needs an Onion Powder Processing Line?
This line is designed for commercial buyers who need consistent, large-scale onion powder output.
- Seasoning and spice manufacturers
- Dehydrated vegetable processors
- Food ingredient exporters
- Soup and sauce producers
- Catering supply companies
- Central kitchens with long-term storage needs
How to Choose the Right Onion Powder Production Capacity?
Before buying an onion powder processing plant, consider three points:
Daily output target
A 100 kg/h line produces about 800 kg per 8-hour shift. A 500 kg/h line produces about 4,000 kg per shift.
Raw material supply
Make sure your onion supply is stable and sized correctly for the root cutter and peeler.
Energy source
Choose the drying heat source that matches your local electricity cost, fuel price, and emission rules.
Workshop space
The drying room and packing machine need the most floor space. Confirm layout before ordering.
Why Choose Shuliy Machinery for Onion Powder Processing?
- Over 20 years of experience in food processing machinery
- CE, ISO, SGS, BV, and TUV certified equipment
- Custom voltage, capacity, and layout design
- One-year warranty and lifetime technical support
- Overseas installation, commissioning, and operator training
- Global export and logistics experience


Frequently Asked Questions
What is the total power requirement for the full onion powder line?
Total power depends on the configuration. A 300 kg/h line typically requires 20–35 kW including drying, grinding, and packaging.
How long does it take to dry onion slices?
Drying time is usually 4–8 hours depending on slice thickness, initial moisture, and drying temperature.
Can the line also produce garlic powder?
Yes. Most machines in this line can also process garlic. You may need to adjust cutting blades and drying parameters.
What is the recommended onion slice thickness before drying?
2–5 mm is ideal. Thinner slices dry faster but may stick together. Thicker slices need longer drying time.
Does Shuliy provide installation and training?
Yes. We offer installation guidance, commissioning support, operator training, and a 12-month warranty.
Can the packaging machine handle different bag sizes?
The SL-450 supports bag widths of 80–190 mm and lengths of 90–310 mm. One former handles one bag width at a time.
Is the line available in 220V single-phase power?
Some machines support 220V single-phase. The root cutter and large dryer usually need 380V three-phase power.
Get a Custom Onion Powder Production Line Quote
If you are planning to start or expand an onion powder business, Shuliy Machinery can design a complete line for your capacity, budget, and workshop. Contact us today for equipment selection, layout design, and pricing.
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