01 / 05Grinding · WFJ series
Air Classifier Mill
An ultrafine mill with an air classifier. It grinds to 80 to 800 mesh with no screen and collects dust in a pulse dust collector.
- Capacity
- 10 to 800 kg/h, 6 models
- Crush size
- 80 to 800 mesh
- Total motor
- 14 kW to 124 kW
- Cooling
- Water cooled jacket or air cooler
- Built to your materialSize, material and motor set to your product.
- Made in our workshopDesigned and built by our own team.
- Support through installationFrom first inquiry to your production line.
Overview
Fine powder, no screen
The WFJ air classifier mill grinds material to 80 to 800 mesh without a screen. A grading wheel sets the fineness, so oily, sugary and fibrous material does not clog the machine.
It suits roots, stems and leaves, which a regular grinder only reduces to about 60 mesh.
The mill has three parts: the main machine, the auxiliary machine and the electric control box.
Feed
A screw conveyor moves material into the grinding chamber.
Grind and classify
Fast turning blades cut the material. Air force and centrifugal force act on the powder at the grading wheel, and only fine powder passes.
Collect
Fine powder leaves through the cyclone. Dust goes to the pulse dust collector. Coarse powder stays in the chamber for another pass.

The range in numbers
- 6Models
From WFJ-15 to WFJ-100
- 80 to 800Mesh
Crush size, set by grading speed
- 10 to 800kg/h
Capacity range
- 14 to 124kW
Total motor power
Inside the plant



Have a question about this machine?
Send your material and batch size. We reply with a suitable model.
Features
Built for clean, even powder
The mill grinds, classifies and collects in one continuous run.
- 01
No screen to clog
Fineness is set by the grading motor speed. The faster it turns, the finer the powder.
- 02
Dust stays in the box
Dust is collected in the dust collection box. The design meets GMP production standards.
- 03
Cooled grinding chamber
A water cooled jacket surrounds the grinding chamber and bearings. An air cooler can be added instead.
- 04
Easy to install
On delivery you connect 4 pipes and 5 motor power lines, then run it.
- 05
Adjustable feeding
An inverter controls the feeding speed.
- 06
Branded components
Motors, electrical parts, bearings and operating parts come from well known brands.
Build it your way
Fineness
80 to 800 mesh, changed with the grading motor speed.
Cooling
Water cooled jacket, or an air cooler for material that is sensitive to heat.
Contact material
The frame, housing, cover and grading wheel are SUS304.
Feeding
Feeding speed set by inverter.
Size
Six models from WFJ-15 to WFJ-100.
Have a question about this machine?
Send your material and batch size. We reply with a suitable model.
Specifications
Choose by capacity and fineness
Sizes are for reference and can be customised.
| Model | Capacity (kg/h) | Feed size (mm) | Crush size (mesh) | Total motor (kW) | Main speed (rpm) | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| WFJ-15 | 10-50 | ≤6 | 80-400 | 14 | 4000 | 5500 x 1000 x 2000 | 800 |
| WFJ-20 | 50-150 | ≤10 | 80-400 | 27 | 4000 | 6000 x 1250 x 2900 | 1200 |
| WFJ-30 | 100-300 | ≤12 | 80-800 | 46 | 3800 | 7100 x 1450 x 3200 | 1900 |
| WFJ-60 | 200-500 | ≤15 | 80-800 | 76 | 3200 | 8000 x 1800 x 4200 | 2500 |
| WFJ-80 | 300-600 | ≤15 | 80-800 | 95 | 2800 | 9000 x 1900 x 4300 | 2800 |
| WFJ-100 | 400-800 | ≤20 | 80-800 | 124 | 2000 | 10000 x 2000 x 4500 | 3200 |
Showing 6 of 6 models
Have a question about this machine?
Send your material and batch size. We reply with a suitable model.
Applications
Where it works
It grinds material for food, herbal, chemical and many other industries.
Materials it handles
Have a question about this machine?
Send your material and batch size. We reply with a suitable model.
Questions
Before you order
01How fine can the mill grind?
It grinds to 80 to 800 mesh. You change the fineness with the grading motor speed. A faster speed gives finer powder.
02Does it need a screen?
No. The machine classifies powder by air and centrifugal force, so there is no screen to clog. This helps with oily, sugary and fibrous material.
03Why choose it for fibrous material?
Roots, stems and leaves with high fibre content can only be crushed to around 60 mesh by a regular grinder. This mill reduces them to fine powder.
04How is dust handled?
The cyclone separates powder from dust, and a pulse dust collector holds the dust. A pulse air hammer shakes the filter bags clean. Open the valve at the bottom of the box each day to empty it.
05How is heat controlled?
A water cooled jacket surrounds the grinding chamber and bearings. An air cooler can be fitted to limit temperature rise so material properties do not change.
Have a question about this machine?
Send your material and batch size. We reply with a suitable model.
Inquiry
Not sure which mill fits?
Tell us your material and the fineness you need. We reply with a suitable model.






