WHM Wood Hammer Mill with Cyclone Dust Collector

Fine grinding for wood chips, sawdust and pre-sized biomass — with cyclone collection. Proudly made in Lebanon.

The Mechaniqua WHM Series combines a dedicated hammer-grinding system with cyclone collection to prepare pre-sized wood and biomass for pellet production and other processing applications.

Rotating hammers break down material through repeated impact. A replaceable screen controls the discharge opening, allowing the machine to be configured according to the required grinding application.

The ground material travels through the discharge duct to the cyclone, where separated material exits through the bottom outlet for collection or further handling.

With more hammers than a comparable WCHM model, the WHM focuses on secondary grinding. Incoming material must already be appropriately sized for the grinding chamber.

Available in five sizes from 11 kW to 55 kW, this configuration operates exclusively on 380V three-phase power, with star-delta or VFD starting.

Key Features

• Dedicated hammer-grinding system: designed for pre-sized wood and suitable biomass.
• Cyclone collection system: separates ground material from the conveying air for collection at the cyclone outlet.
• Replaceable screens: select the screen opening according to the grinding requirement.
• Five models: electric motor sizes from 11 kW to 55 kW.
• 380V three-phase operation: available with star-delta or VFD starting.
• Serviceable wear components: replaceable hammers and screens.
• Manufactured in Lebanon: local servicing and spare-parts support from Mechaniqua.

Suitable Materials

Material	Preparation requirements
Wood chips	Appropriately sized for the selected model.
Small wood pieces	Within the machine’s approved feed dimensions.
Coarse sawdust	Where further particle-size reduction is required.
Leaves and straw	Suitability and preparation confirmed for the application.
Dry agricultural residues	Clean, appropriately prepared material.
Pre-shredded biomass	Consistent feeding and suitable screen selection.

Logs, large branches and oversized wood pieces require initial cutting or crushing before entering the WHM. For these materials, consider the Mechaniqua WCHM or a suitable upstream chipper.

Remove nails, screws, stones and other foreign objects before processing. Contact Mechaniqua before using unusual, contaminated or treated materials.

How the WHM with Cyclone Works

Stage	Process
1. Feeding	Pre-sized material enters the grinding chamber at a controlled rate.
2. Hammer grinding	Rotating hammers reduce the material through repeated impact.
3. Screening	Material passes through the installed screen when sufficiently reduced.
4. Conveying	The blower and discharge duct transfer the ground material to the cyclone.
5. Cyclone separation	The cyclone separates material from the conveying air and discharges it through the bottom outlet.

Smaller screen openings generally produce finer material while reducing production capacity. The screen does not guarantee identical particle dimensions, particularly with fibrous materials.

A cyclone does not guarantee dust-free exhaust. Fine dust may remain in the outlet air; additional filtration may be required where fine-dust control is necessary. Dust containment also depends on sealed duct connections and the collection arrangement beneath the cyclone.

Model Specifications

Model	Electric motor	Approximate production capacity*	Typical application
WHM420	11 kW	300–500 kg/h	Commercial grinding
WHM500	15 kW	400–700 kg/h	Professional biomass processing
WHM600	22 kW	600–1,000 kg/h	Higher-volume production
WHM800	30 kW	800–1,400 kg/h	Industrial processing
WHM1000	55 kW	1,500–2,500 kg/h	Large-scale production

Capacities are approximate selection guidelines. Actual output depends on material type, density, moisture, incoming dimensions, screen opening, feeding consistency, hammer condition and the complete discharge and collection arrangement.

Fine screens, including 3 mm screens, can significantly reduce throughput. The figures above are not guaranteed production rates through a 3 mm screen.

Motor ratings shown refer to the main machine motor. Blower arrangement, any separate blower motor and total connected power are confirmed in the technical quotation.

Screen Selection and Pellet Preparation

The WHM can prepare suitably sized biomass for downstream pellet production.

Requirement	Screen-selection guidance
Finer ground material	Smaller openings, generally with lower throughput.
Coarser material	Larger openings, generally allowing higher throughput.
Pellet-machine feedstock	A 3 mm screen may be suitable where finely prepared material is required. Confirm compatibility with the pellet machine.

Select the screen together with the required production rate and downstream equipment.

Grinding and cyclone collection do not replace drying. Material moisture must remain suitable for the intended process.

Electric Drive Options

All models in this configuration require 380V three-phase power.

Model	380V star-delta	380V VFD
WHM420 — 11 kW	✓	✓
WHM500 — 15 kW	✓	✓
WHM600 — 22 kW	✓	✓
WHM800 — 30 kW	✓	✓
WHM1000 — 55 kW	✓	✓

Choosing a Starting System

Starting system	Characteristics
Star-Delta	Reduces initial starting current and starting torque. Requires a compatible motor and sufficient torque to accelerate the unloaded rotor.
VFD — Variable-Frequency Drive	Provides controlled acceleration and adjustable operating settings, configured for the motor and machine.

A VFD does not increase the motor’s rated power or compensate for an undersized electrical supply. Operate only within the machine-speed range specified by Mechaniqua.

Electrical Supply and Installation

Electrical supply cables, breakers and motor protection must be selected according to the installed motor, starting system, control panel and any separately powered blower.

For VFD-equipped machines, input cables and protective devices must follow the actual drive’s rated input current and manufacturer requirements. Motor current alone is insufficient to size the VFD supply circuit.

A qualified electrician must verify the final installation. Cable length, installation method, ambient temperature, cable grouping and voltage drop affect the required conductor size.

Maintain proper earthing, isolation and ventilation around the motor and control panel. Installed equipment specifications take priority over preliminary planning values.

If the motor repeatedly overheats or exceeds its permitted continuous current, reduce feeding and investigate the cause before continuing production.

Generator and Solar Compatibility

Compatibility must be assessed against:

• 380V three-phase supply requirements.
• Continuous output capacity.
• Motor-starting capability and selected starter.
• Total connected power, including any separate blower motor.
• Other equipment operating on the same supply.

Motor kW alone is insufficient to size a generator or solar inverter. Provide Mechaniqua with the supply equipment specifications before ordering.

Cyclone Collection and Discharge

The collection arrangement beneath the cyclone must suit the material, production rate and downstream process.

Cyclone dimensions, duct routing, blower specifications, collection connections and any additional filtration are confirmed for the selected configuration.

Keep the cyclone outlet and discharge path clear. The collection container or downstream equipment must allow continuous discharge without material accumulating inside the cyclone.

Where enclosed dust collection is required, the outlet sealing and collection arrangement must be specified as part of the system.

WHM or WCHM?

Feature	WHM — Wood Hammer Mill	WCHM — Wood Crusher Hammer Mill
Processing system	Hammer grinding	Cutting disc with blades and hammers
Incoming material	Pre-sized chips and suitable reduced biomass	Branches and larger pieces within the model’s limits
Main function	Secondary grinding	Primary cutting followed by grinding
Hammer arrangement	More hammers for a comparable machine size	Hammers combined with a cutting system

Choose WHM when your material is already appropriately sized for hammer grinding. Choose WCHM when initial cutting is required.

Operation and Maintenance

• Start with the grinding chamber clear.
• Allow the rotor to reach its specified operating speed before feeding.
• Feed progressively and adjust the rate to the material, screen and available power.
• Keep screens, ducts and cyclone discharge paths clear.
• Inspect hammers, screens, belts, bearings and duct connections regularly.
• Follow the supplied lubrication and maintenance instructions.
• Keep guards fitted during operation.
• Stop, isolate and wait for all rotating components to come to a complete standstill before opening, cleaning or servicing the system.

Select Your WHM with Cyclone

To help us recommend the appropriate model, provide:

• Material type and moisture condition.
• Incoming material dimensions.
• Required production capacity and final material size.
• Intended operating hours and downstream equipment.
• Available 380V three-phase electrical service capacity.
• Preferred starting system: star-delta or VFD.
• Generator or solar-inverter specifications, where applicable.
• Available installation space and intended collection method.
• Any requirements for additional fine-dust filtration.

Machine dimensions, weight, inlet dimensions, maximum feed size, rotor speed, screen availability, cyclone and blower specifications, total connected power and included accessories are confirmed in the technical quotation for the selected configuration.

Contact Mechaniqua

Dhour Choueir, Lebanon
Phone / WhatsApp: +961 71 612071
Email: mechaniqua@gmail.com