YM-320D Industrial Three-Phase Concrete Floor Grinder with Integrated Vacuum

The YM-320D Industrial Three-Phase Concrete Floor Grinder is designed for factories, warehouses, contractors and equipment fleets operating with three-phase electrical power. Its 5 hp / 3.7 kW motor drives the 300 mm grinding head at a consistent 720 RPM, providing a straightforward full-speed operating platform for professional concrete surface preparation.

Unlike the variable-speed YM-320V, the YM-320D concentrates on fixed-speed grinding and broader industrial-voltage compatibility. Standard three-phase configurations cover 220–380 V supplies, while a high-voltage 400–415 V version is available for markets and jobsites using those electrical standards.

An integrated 1 kW vacuum, large filter surface and 19 L dust container enable grinding and dust collection to take place within one machine. This supports an efficient workflow in industrial buildings where floor preparation must be completed without continuously repositioning a separate extractor.

Consistent Grinding at 720 RPM

The YM-320D operates its tool holder at a fixed 720 RPM. This eliminates speed adjustment and gives trained operators a predictable grinding action when using properly matched diamond tools.

Consistent full-speed operation is suitable for:

• Opening concrete surfaces
• Preparing factory and warehouse floors
• Removing old floor treatments
• Roughening dense industrial floors
• Creating a profile before recoating
• General concrete leveling
• Repeated work using standardized tooling
• Contractor and rental-fleet applications

Because speed is fixed, correct diamond-tool selection is especially important. The diamond bond, grit and segment design must be compatible with both the surface and 720 RPM operating speed.

Three-Phase 220–380 V Configuration

The standard YM-320D configuration is intended for three-phase electrical supplies between 220 and 380 V, depending on the destination market and selected version.

Three-phase operation is commonly preferred in industrial environments because these sites often already provide dedicated power for professional machinery. The appropriate configuration must be specified before production.

Important ordering information includes:

• Nominal voltage
• Voltage tolerance
• Frequency
• Available amperage
• Three-phase wiring standard
• Industrial plug type
• Grounding requirements
• Destination-country electrical regulations

400–415 V High-Voltage Version

A three-phase 400–415 V version differentiates the YM-320D from the YM-320V. This configuration is suitable for markets where 400 V or 415 V three-phase supplies are standard in factories, warehouses and commercial construction sites.

The high-voltage version makes the YM-320D relevant for:

• European industrial projects
• UK and related 415 V markets
• Australian commercial and industrial sites
• International equipment distributors
• Industrial rental fleets
• Factories with established three-phase supplies

The exact voltage, frequency, amperage and plug must be confirmed before ordering. Do not connect a machine to an unverified electrical supply.

Integrated Vacuum for an Efficient Industrial Workflow

The built-in extraction system consists of a 1.3 hp / 1 kW vacuum motor, 10.8 ft² / 1 m² filter surface and 19 L dust container. Maximum listed airflow is 2.6 m³/min.

Integrating the vacuum with the grinder provides several operational advantages:

• Grinding and dust collection start from one machine platform
• The extractor follows the grinding head through the work area
• Fewer external machines occupy the floor
• Hose routing is shorter and simpler
• Dust is captured close to its source
• Cleanup requirements can be reduced
• Transport and setup are simplified

The filter and dust container require regular inspection. Reduced suction, visible dust leakage or dust escaping from the shroud indicates that operation should stop until the system is checked.

Built for Factory and Warehouse Preparation

At approximately 242 lb / 110 kg, the YM-320D provides stable tool contact without requiring the footprint of a large planetary grinder. Its 300 mm working width makes it suitable for both open floor areas and zones around production equipment, columns and fixed building structures.

Recommended working environments include:

• Manufacturing plants
• Warehouses
• Distribution centers
• Commercial buildings
• Parking facilities
• Workshops
• Food-production areas during renovation
• Equipment installation zones
• Rental and contractor fleets
• Industrial maintenance projects

Electric Operation for Indoor Projects

The electrically driven grinder produces no combustion exhaust at the point of use. Combined with integrated dust collection and comparatively low operating noise, this makes the machine suitable for indoor industrial renovation where air quality, ventilation and surrounding operations must be considered.

Appropriate PPE, ventilation and crystalline-silica controls remain necessary.

Grinding Capacity for Production-Oriented Work

The brochure states a grinding capacity of approximately 150–200 m²/h under suitable conditions. This figure should be treated as an application-dependent reference rather than a guaranteed output.

Actual productivity is influenced by:

• Concrete strength and hardness
• Existing coating
• Required removal depth
• Diamond-tool configuration
• Surface flatness
• Dust-extraction condition
• Operator experience
• Number of passes
• Required final profile
• Edge work and fixed obstacles

A small onsite test area provides the most reliable basis for estimating production.

YM-320D or YM-320V?

Choose the YM-320D when:

• The jobsite provides three-phase power
• A 400 V or 415 V version is required
• Consistent 720 RPM operation is preferred
• The machine will primarily serve industrial projects
• A distributor needs a model matched to local industrial voltage

Choose the YM-320V when:

• Adjustable 300–720 RPM control is required
• Projects use single-phase 220 V power
• The operator changes tools and floor applications frequently
• Electrical flexibility is more important than high-voltage compatibility

For adjustable-speed grinding, view the YM-320V Variable-Speed Concrete Floor Grinder.