Customized Services
We provide you with functional adjustments, product customization, OEM/ODM, and private label services.
HW400 series floor grinder, with an optional internal and external dust suction design, is suitable for flat grinding concrete, cement, and other floors. Its 4KW powerful motor is fast and efficient and supports wet and dry construction.
HW400 series floor grinders include HW400A with built-in vacuum, HW400B with external vacuum, and HW400D without vacuum. Each model has a powerful 4KW motor and an efficient grinding system for grinding and treating a wide range of floors, such as concrete, cement, terrazzo, and more. Whether dry or wet, the HW400 series provides smooth and efficient grinding results, significantly improving construction efficiency. Its unique multifunctional design enables it to adapt to different grinding discs, tools, and working environments to meet the needs of various flooring projects.
Multifunctional chassis design: triangular or hexagonal star grinding disc design supports a variety of diamond grinding pads, sandpaper, epoxy knives, and other attachments to meet different floor grinding needs.
Dust extraction system options: Built-in (HW400A) and external (HW400B) dust extraction are optional. They match with vacuum cleaners to realize dust-free construction and protect workers’ health.
Efficient work efficiency: it can handle 180 square meters of flooring per hour, significantly improving construction efficiency and reducing the cost of working hours.
Adjustable tool design: A hand crank wheel height adjustment device makes it easy to adjust the tool’s balance to adapt to different grinding blocks and operational needs.
Stability and comfort: the machine’s weight is moderate, long-time operation is not easy to fatigue, and the low center of gravity is designed to improve stability and reduce vibration.
Environmentally friendly and healthy: A strong dust suction system effectively reduces dust during construction, providing a cleaner and more environmentally friendly working environment.






HW400 series floor grinder is widely used in the following construction scenarios:
| Howon 400mm Series Concrete Floor Grinder with Vacuum Cleaner | |||
| Model | HW400a | HW400b | HW400d |
| Energy Type | Electric | Electric | Electric |
| Power Specification | 220V/380V | 220V/380V | 220V/380V |
| Phase | Single-phase | Single-phase | Three-phase |
| Motor Speed | 1400r/min | 1400r/min | 1400r/min |
| Power | 4KW | 4KW | 4KW |
| Grinding discs | Hexagonal star grinding disk 400MM | Hexagonal star grinding disk 400MM | Triangle grinding disk 400mm |
| Number of grinding blocks | 5 | 5 | 3 |
| Machine weight | 160KG | 160KG | 100KG |
| With or without dust extraction | Built-in vacuum | External vacuum | No vacuum cleaner/external vacuum cleaner |
| Vacuuming power | 1.8KW | 0.75KW | |
| Dust bin capacity | 24L | 24L | |
| Working mode | Dry or wet grinding | Dry or wet grinding | Dry or wet grinding |
| Efficiency | 180㎡/h | 180㎡/h | |
| Minimum order quantity | 1 | 1 | 1 |
| Place of Origin | Made in China | Made in China | Made in China |
| After-sales | One year warranty | One year warranty | One year warranty |
We provide customized service for your unique needs:
OEM/ODM customization: provide customized equipment and services according to your brand requirements.
Accessory customization: Provide suitable grinding discs, blocks, tools, and other accessories according to project requirements.
Packaging customization: provide personalized packaging design according to the requirements of batch orders to ensure safe transportation.
If you are interested in the 400mm Concrete Floor Grinder or have any questions, please get in touch with us. We will provide you with the most suitable products and service solutions to help your project succeed!
Why choose Howon?
Whether you're a flooring engineering company, building contractor, equipment renter, local distributor or sharer, we're happy to be your partner in providing you with high-quality flooring tools!
We use high-quality materials and advanced technology to ensure the products remain efficient and stable for long-term use.
We provide you with functional adjustments, product customization, OEM/ODM, and private label services.
A variety of innovative designs that are friendlier to both workers and the environment.
We provide product accessory support and a one-stop purchasing service for flooring tools.
Scientific product design and manufacturing help you build efficiently.
We will complete the production, testing, and shipment within 40 days after receiving your order.
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CE, SGS, ISO Certificate
15+ Years Flooring Machinery Factory
Machine operation, manuals
7*24 hours after-sales support


