Double-Cylinder Diamond Grinding Block for Concrete Polishing

Product Overview of Double-Cylinder Diamond Grinding Block

Manufactured by Quanzhou Zhongzhi New Material Technology Co., Ltd., established in 2003, the double-cylinder diamond grinding block is engineered for concrete floor preparation and polishing contractors. Each block features two cylindrical diamond segments mounted on a steel backing plate, delivering aggressive material removal during leveling, coarse grinding, and fine grinding stages. The standard segment dimension measures 40×12×12 mm, with additional sizes available upon request. Designed for use on floor grinding machines, this block is suitable for processing concrete, terrazzo, and natural stone surfaces. Grit options range from 30# to 120#, covering the full progression from initial leveling to final refinement. Trial orders start at 10 pieces, allowing business buyers to evaluate performance before committing to larger volumes.

Design and Construction of Double-Cylinder Diamond Grinding Block

Cylindrical Segment Configuration

Each grinding block carries two cylindrical diamond segments with a diameter of 40 mm and a working height of 12 mm. The cylindrical shape provides a uniform contact patch with the floor surface, producing consistent scratch patterns across the grinding area. The two segments are positioned to balance cutting pressure and reduce vibration during operation, which contributes to smoother floor finishes and lower strain on the grinding machine.

Bond Matrix and Diamond Grit

The segments are produced using a metal-bond matrix that holds industrial-grade diamond particles throughout the working height. As the block wears, fresh diamond crystals are continuously exposed to maintain cutting performance. The bond hardness is formulated for concrete and terrazzo applications, balancing segment wear rate with grinding efficiency. Available grits include 30#, 40#, 60#, 80#, and 120#, allowing contractors to select the appropriate aggression level for each project stage.

Technical Specifications for Double-Cylinder Diamond Grinding Block

Parameter	Specification
Segment Dimension	40×12×12 mm
Segment Shape	Cylindrical (2 segments per block)
Grit Options	30#, 40#, 60#, 80#, 120#
Bond Type	Metal bond
Backing Plate	Steel with threaded mounting holes
Compatible Materials	Concrete, terrazzo, natural stone
Application Stages	Leveling, coarse grinding, fine grinding
MOQ	10 pieces
Customization	OEM, ODM supported

Applications of Double-Cylinder Diamond Grinding Block

Concrete Floor Preparation

In concrete floor projects, the 30# and 40# grit blocks are used for initial leveling and removal of surface imperfections, coatings, or adhesives. The 60# and 80# grits handle intermediate grinding to refine the surface texture, while the 120# grit prepares the floor for subsequent polishing steps. This progression supports commercial and industrial flooring projects where surface flatness and uniformity are required.

Terrazzo and Stone Surface Processing

For terrazzo floors and natural stone surfaces, the double-cylinder block provides controlled material removal without excessive gouging. The cylindrical segment design distributes grinding pressure evenly, reducing the risk of uneven wear patterns on softer stone varieties. Contractors can use the same block across multiple material types on a single job site, simplifying inventory management for commercial users.

Customization and Procurement for Double-Cylinder Diamond Grinding Block

Zhongzhi supports OEM and ODM customization for industrial clients, including private-label branding, modified segment dimensions, and tailored bond formulations for specific concrete hardness levels. The minimum order quantity for standard blocks is 10 pieces, suitable for trial evaluation. Accepted payment methods include T/T, L/C, D/A, and D/P. Shipping is available via express courier, air freight, or sea freight depending on order volume and delivery timeline. Business buyers are encouraged to share their machine specifications and target material details to receive a tailored product recommendation.

FAQ

What grit options are available for the double-cylinder diamond grinding block?

Standard grit options are 30#, 40#, 60#, 80#, and 120#. Additional grit sizes can be produced through ODM customization for enterprise customers with specific project requirements.

What type of grinding machines are compatible with this block?

The block is designed for floor grinding machines that accept bolt-on diamond grinding blocks. Buyers should verify their machine's mounting hole spacing and thread size before ordering. Zhongzhi can adjust the backing plate configuration to match common machine models.

What is the minimum order quantity?

The MOQ for standard double-cylinder diamond grinding blocks is 10 pieces, allowing commercial users to test performance on a live project before placing larger volume orders.

Can the segment dimensions be customized?

Yes. The standard segment size is 40×12×12 mm, but Zhongzhi offers ODM customization for segment diameter, working height, and bond formula to suit different concrete densities and machine types.