Certified 20-inch (500mm) and premium diamond blades engineered for high-feed rate bridge saws, floor cutters, and industrial stone processing machinery.
Comprehensive compliance under EN 847-1 safety requirements, Machinery Directive 2006/42/EC, and dynamic balancing benchmarks for industrial power tools.
The European Standard EN 847-1 specifies stringent design criteria for rotating tools. For a 20-inch (500mm) circular saw blade operating at peripheral speeds exceeding 50 m/s, JIAYAN engineered cores guarantee extreme resistance against centrifugal forces, eliminating core deflection, fracture risk, and segment shear under heavy torque loads.
CE compliance requires superior metallurgical bonds between the steel core disc and the diamond segment. Our fully automated 3D laser-welding line creates a deep melt zone, achieving a minimum shear stress resistance exceeding 450 MPa—preventing segment loss during severe dry or wet cutting operations in high-density reinforced concrete and natural quartzite.
A 500mm circular saw running out of balance causes severe spindle vibration, bearing failure, and jagged cut lines. JIAYAN's 20-inch blades undergo 100% dynamic balancing down to G2.5 precision. Laser-cut expansion slots filled with dampening copper rivets reduce operational resonance noise levels by up to 15 dB(A).
Precision engineering matrix designed for bridge saws, floor saws, wall saws, and heavy-duty masonry cutters.
| Parameter | Granite & Quartzite Matrix | Sintered Stone / Dekton Matrix | Reinforced Concrete & Asphalt |
|---|---|---|---|
| Outer Diameter | 20 Inch / 500 mm | 20 Inch / 500 mm | 20 Inch / 500 mm |
| Bore / Arbor Sizes | 25.4mm, 50mm, 60mm (Custom Pin Holes) | 50mm, 60mm (Precision Fit) | 25.4mm, 35mm, 50mm |
| Segment Size (L x W x H) | 40mm x 4.2mm x 15mm | 40mm x 3.6mm x 12mm / 15mm | 40mm x 4.5mm x 12mm |
| Diamond Grit Density | Element Six Premium 35/45 Mesh | Nano-Sintered 50/70 Ultra-Fine Mesh | Coarse MSD Diamond 25/35 Mesh |
| Bond Matrix Alloy | Cobalt-Nickel Tough Alloy | Bronze-Ti Flex Hardened Matrix | Iron-Copper Wear-Resistant Matrix |
| Max Safe Speed (RPM) | 3,800 RPM (Linear 95 m/s) | 3,200 RPM (Linear 80 m/s) | 3,800 RPM (Linear 95 m/s) |
| Safety Certification | CE Mark / EN 847-1 Approved | CE Mark / EN 847-1 Approved | CE Mark / EN 847-1 Approved |
Tailored cutting dynamics engineered for diverse regional raw materials, machinery configurations, and climate conditions.
In fabricators across Italy, Spain, and Germany processing large-format porcelain slabs (such as Neolith, Dekton, and Lapitec), cutting edge-chipping is unallowable. JIAYAN’s 20-inch silent-core blade utilizes continuous-segment J-slots and ultra-fine diamond mesh, allowing high-speed CNC bridge saw processing up to 3.5 meters/minute without edge micro-cracking.
Heavy civil construction in the US and Canada requires 500mm walk-behind saws to cut expansion joints and deep utility channels in high-psi rebar-reinforced concrete. Our laser-welded segment geometry incorporates drop-segment undertrack protection, preventing blade steel core undercut wear when cutting abrasive sub-bases.
Operating in extreme ambient temperatures exceeding 45°C in Saudi Arabia and UAE quarries, block-trimming saws face massive heat accumulation. JIAYAN's cobalt-rich matrix bond rapidly dissipates friction heat, ensuring stable blade flatness and maintaining segment sharpness when cutting dense Arabian Red granite.
Pioneering next-generation superhard material innovations to set new efficiency milestones in global industrial cutting.
Traditional diamond segments feature randomly dispersed diamond grits, leading to uneven wear and premature segment loss. JIAYAN's upcoming 3D Controlled Grid Alignment positions every individual diamond grain at precise three-dimensional distances within the metal matrix. This guarantees continuous exposed diamond sharpness, increasing cutting speeds by 35% and extending total blade lifetime by 40%.
As EU noise pollution regulations become increasingly strict on indoor construction sites, JIAYAN is pioneering multi-layered composite core designs. Utilizing laser-etched micro-channels injected with viscoelastic polymer layers between dual steel plates, our next-gen 20-inch circular saws absorb high-frequency harmonics, reducing cutting noise below 80 dB(A).
Headquartered in Wuhu, China, JIAYAN Superhard leverages vertically integrated production to deliver unbeatable lead times, strict batch uniformity, and optimized landed costs for international buyers.
China accounts for over 85% of global synthetic industrial diamond production. Being directly connected to top-tier synthetic diamond powder suppliers allows JIAYAN to source high-grade crystal diamonds with superior thermal toughness at stable, transparent costs.
Our production line utilizes automated vacuum hot-press sintering technology. Temperature and pressure parameters are digitally monitored down to ±1°C and ±0.1 MPa, ensuring zero porosity inside the segment matrix and absolute consistency across 10,000+ unit orders.
We support global machinery manufacturers and distributors with tailor-made arbor dimensions, customized core laser-etching, private logo branding, and localized bond formulations to match specific regional stone quarry hardness indices within 14 business days.
Ensuring total peace of mind for international importers through full compliance documentation, customs clearing facilitation, and local field support.
Navigating EU and North American import audits requires absolute documentation clarity. JIAYAN provides comprehensive compliance packages with every export batch, including CE Conformity Declaration certificates, ISO9001 quality inspection reports, laser-weld shear test records, and material safety data sheets (MSDS) for international shipping regulations.
With direct export routes via Shanghai and Ningbo ports, JIAYAN manages complete DDP/FOB/CIF international freight operations. Furthermore, our senior technical engineering team provides remote consultation to optimize spindle RPM settings, water coolant flow rates, and feed speed parameters for your specific customer installations.
Direct answers from JIAYAN Superhard's senior engineering director regarding CE standards, blade selection, and operation efficiency.
Under EN 847-1, a 20-inch (500mm) diamond circular saw blade must undergo centrifugal burst resistance testing (tested at 1.5 times the max operational RPM), laser-weld shear stress testing (minimum threshold of 450 MPa), dynamic unbalance verification down to G2.5 level, and precise steel core flatness testing to prevent binding during operation.
High-frequency silver brazing melts at approximately 600°C. If water coolant flow fails or severe dry cutting occurs, brazed segments can detach, creating extreme hazard risks. Laser welding fuses the segment matrix directly to the 75Cr1 steel core at atomic levels, creating a joint that withstands temperatures up to 900°C and severe impact stresses.
For ultra-hard natural stone and quartzite, we recommend a lower linear speed of 25–35 m/s (approx. 1,000–1,400 RPM for 500mm blades) to prevent diamond glazing. For soft or green concrete, higher linear speeds of 45–60 m/s (1,700–2,300 RPM) allow maximum feed efficiency and optimal blade self-sharpening.
Our silent core 500mm blades utilize a sandwich construction: two hardened steel plates laminated with a thin sheet of acoustic copper foil. Additionally, laser-cut geometry slots absorb vibration frequencies before they propagate through the blade core, reducing noise by up to 15 dB(A).
We manufacture standard 25.4mm (1 inch), 50mm, and 60mm bore sizes. We custom-machine drive pin holes (such as 2-12-80 or 4-15-100 mm pitch circle patterns) to ensure 100% compatibility with Pedrini, SIMEC, Gaspari Menotti, and custom bridge saw machinery.
Core warping occurs due to localized thermal expansion when coolant water distribution is uneven or feed rates exceed segment capacity. To prevent warping, ensure dual-sided water nozzles spray directly at the cutting contact point, maintain proper arbor tension, and use JIAYAN’s laser-tensioned 75Cr1 alloy cores.
Yes. We custom-formulate matrix bonds based on your regional material Mohs hardness. For soft, abrasive materials like limestone or sandstone, we utilize hard tungsten-iron bonds. For high-density, hard materials like Brazilian granite or Dekton, we provide soft cobalt-nickel bonds to ensure continuous diamond exposure.
Standard samples are dispatched within 5 to 7 working days. Bulk custom OEM orders (100–1,000 units) with customized laser logos, arbor dimensions, and specialized segment bonds are typically completed and ready for export shipment within 15 to 20 days.
Explore JIAYAN’s full range of diamond cutting discs, continuous rim blades, and industrial saw accessories.
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