YM-320V Variable-Speed Dust-Free Concrete Floor Grinder Manufacturer in China

The YM-320V Variable-Speed Dust-Free Concrete Floor Grinder is designed for contractors who need one compact machine for several surface-preparation tasks. Its adjustable tool-holder speed can be set between 300 and 720 RPM, allowing the grinding action to be matched more closely to the floor material, coating condition, diamond tooling and desired surface profile.

A 5 hp / 3.7 kW motor drives the 300 mm grinding head, while the integrated 1 kW vacuum captures dust close to the working area. Combining grinding and extraction in one machine reduces the need to transport, connect and manage a separate industrial vacuum on smaller or space-restricted projects.

The YM-320V is particularly suitable for indoor concrete preparation, floor renovation, surface opening and coating removal in basements, workshops, retail spaces, offices, garages and other locations where maneuverability and dust control are important.

More Control with Adjustable 300–720 RPM Operation

Different floors and diamond tools do not always perform best at the same rotational speed. The YM-320V allows operators to adjust the tool-holder speed from 300 to 720 RPM instead of working at one fixed setting.

This variable-speed range helps the operator adapt the machine for:

• Opening dense concrete surfaces
• General concrete grinding
• Removing old coatings and floor treatments
• Working with different diamond bonds and grits
• Treating carborundum and wear-resistant floors
• Reducing an overly aggressive grinding action
• Improving control on sensitive or uneven surfaces
• Matching speed to the required removal rate

The optimal speed depends on floor hardness, tooling, coating type, grinding pressure and the required finish. A test area should be completed before processing the entire floor.

Integrated Grinding and Dust Extraction

The YM-320V incorporates a 1.3 hp / 1 kW vacuum motor, 1 m² filter surface and 19 L dust container into the grinder structure. Maximum listed airflow is 2.6 m³/min.

Because the extraction system moves with the grinder, operators do not need to pull a separate vacuum around columns, walls or confined indoor areas. The integrated configuration also reduces the number of machines, hoses and cables occupying the working area.

Effective source extraction can help:

• Capture concrete and coating dust close to the grinding head
• Improve visibility around the grinding path
• Reduce dust deposited on the prepared surface
• Limit time spent on post-grinding cleanup
• Simplify movement through restricted spaces
• Create a cleaner surface-preparation workflow

“Dust-free” describes the integrated dust-control design; appropriate personal protective equipment and jobsite dust-safety procedures remain necessary.

Flexible 220 V Electrical Configuration

The YM-320V can be supplied for single-phase or three-phase 220 V power. This makes it a flexible option for contractors serving projects where available electrical supplies vary between residential, commercial and light-industrial locations.

Before ordering, confirm:

• Destination country
• Available voltage
• Single-phase or three-phase supply
• Frequency
• Maximum available current
• Required industrial plug
• Grounding and electrical protection requirements

The grinder and its integrated vacuum have separate electrical specifications within the machine system. Final wiring and plug configuration should be confirmed with the factory.

Compact 300 mm Working Width

The 11.8 in / 300 mm grinding width offers a practical balance between productivity and maneuverability. It is wide enough for professional floor preparation but compact enough for areas where larger planetary grinders may be difficult to operate.

Recommended working environments include:

• Basements
• Garages
• Workshops
• Small warehouses
• Retail spaces
• Office renovations
• Corridors and passageways
• Areas around columns
• Floor edges and restricted zones
• Small and medium commercial projects

The machine weighs approximately 242 lb / 110 kg, giving the grinding head stable contact while remaining more compact than large industrial grinding systems.

Suitable for Concrete and Coated Floors

With correctly selected diamond tools, the YM-320V can be configured for multiple floor-preparation applications, including:

• Concrete surface opening
• Removal of laitance and weak surface material
• Light-to-medium coating removal
• Old paint and adhesive removal
• Floor-level correction
• Carborundum floor treatment
• Emery and wear-resistant floor preparation
• Surface roughening before recoating
• Concrete repair preparation
• Terrazzo surface restoration

Tool compatibility and operating speed should be confirmed according to the material and required result.

Stated Grinding Capacity of 150–200 m²/h

The brochure lists a grinding capacity of approximately 150–200 m²/h under suitable operating conditions. Actual productivity will vary according to:

• Concrete hardness
• Surface flatness
• Coating type and thickness
• Diamond bond and grit
• Selected tool speed
• Required surface profile
• Operator technique
• Dust-extraction performance
• Number of passes required

For accurate project planning, provide the factory with floor photographs, coating information, total area and the required finish.