At Bellaex, we understand that the quality of your final product—whether it’s offset ink, electronic paste, or fine soap—depends entirely on the precision of the roll gap. Inconsistent hardness or poor heat transfer in standard rolls can lead to uneven particle sizes, color deviation, and wasted material. That is why we don't just supply castings; we provide you with a high-performance Three Roll Mill Roll solution designed to stabilize your grinding process.
We manufacture our YS/SG Series using advanced Centrifugal Casting technology to create a superior Alloy Chilled Cast Iron structure. Unlike static casting, this process gives you an extremely hard, wear-resistant outer shell (HS 72+) that maintains its profile under high pressure. Simultaneously, the uniform internal structure ensures optimal thermal conductivity, preventing your heat-sensitive materials from degrading due to hot spots.
You don’t need to worry about compatibility issues. We specialize in customizing dimensions to perfectly match the specifications of major machine brands like Buhler, SDC, and Exakt. With Bellaex, you get a factory-direct replacement that fits your equipment seamlessly and keeps your production line running longer.
At Bellaex, quality isn't just checked; it's manufactured into the roll from the liquid metal stage. We control every variable—from the alloy recipe to the final polishing—to ensure your rolls perform flawlessly under high shear forces.
1. Centrifugal Casting
Advanced Centrifugal Casting Technology Unlike static casting used by budget suppliers, we manufacture the YS/SG Series using high-speed centrifugal casting. This process generates 120G of centrifugal force, driving pure metal to the outer shell while forcing impurities and gases to the center (which is later machined away).
- The Result for You: A roll surface that is 100% free of micropores, pinholes, or inclusions—absolutely critical for ultra-fine grinding applications like electronic pastes and offset inks.
2. The Material Formula
High-Alloy Chilled Cast Iron (Ni-Cr-Mo) We don’t just use standard iron. Our rolls are engineered with a precise blend of Nickel, Chromium, and Molybdenum. This "Chilled Iron" chemistry promotes the formation of hard carbides in the working layer, achieving a surface hardness of HS 72–78.
- The Result for You: Superior wear resistance that holds the roll profile longer, reducing the frequency of regrinding and replacement.
3. Quality Assurance
Rigorous Non-Destructive Testing (NDT) Before any roll leaves our factory, it undergoes a strict quality control regimen.
- Ultrasonic Testing (UT): To guarantee zero internal defects or cracks.
- Hardness Penetration Test: To verify that the chilled layer depth meets OEM specifications (typically 10–25mm).
- Dynamic Balancing: To ensure smooth operation at high speeds (up to 2000 RPM).
