Custom Industrial Wear-resistant Backup Roll

Product Overview

AstraRoll's Industrial Wear-resistant Backup Rolls are engineered to provide critical structural support and stability in high-precision rolling operations. Positioned as the foundational strength of the roll assembly, these backup rolls are designed to absorb and distribute the massive pressures exerted during metal reduction, effectively preventing work roll deflection. This structural integrity facilitates the smooth moving of metal strips, ensuring consistent gauge control and superior flatness.

Built for long-cycle reliability, our backup rolls feature a robust forged core and a specialized deep-hardened surface layer. This dual-property design allows the roll to support a higher loading capacity while maintaining a tough, crack-resistant interior. By minimizing elastic deformation and maximizing contact fatigue life, AstraRoll ensures your rolling mill achieves exceptional driving quiet wear resistance even under the most demanding continuous operation schedules.

Technical Parameter

Material Base: High-Alloy Forged Steel (e.g., 9Cr2Mo, 45Cr5NiMoV, MC3/MC5)

Surface Treatment: High Quality Deep Induction Hardening & Tempering

Surface Hardness: 55-75 HSD (Optimized for balance between wear and toughness)

Hardened Depth: 20mm – 60mm (Radial) to ensure driving quiet wear resistance

Dimensional Accuracy: ≤0.01mm for precise thickness management

Concentricity / TIR:≤0.005mm to ensure smooth moving at high speeds

Loading Capacity: Reinforced for higher loading capacity in 4-Hi & 6-Hi mills

Application Industrial

Steel Hot & Cold Rolling: Essential for high-pressure reduction of carbon, stainless, and silicon steel.

Aluminum Foil & Sheet Mills: Providing the stability required for ultra-thin gauge precision.

Non-Ferrous Metal Processing: Supporting the smooth driving of copper, brass, and titanium alloy production lines.

Automotive Plate Production: Ensuring the flawless surface and structural uniformity of high-strength body panels.

Heavy Plate Mills: Managing extreme force in the manufacturing of structural and shipbuilding steel.

Why choose AstraRoll's Industrial Wear-resistant Backup Roll?

Optimized Stress Distribution: Our backup rolls are engineered to handle a higher loading capacity, significantly reducing the risk of work roll bending and improving strip quality.

Superior Fatigue Resistance: Through advanced forging and heat treatment, we achieve a fine-grained microstructure that offers exceptional driving quiet wear resistance against spalling and cracking.

Extended Regrinding Cycles: The uniform and deep hardened layer allows for multiple regrinds without losing surface hardness, ensuring a high quality performance over an extended lifespan.

Vibration-Free Stability: Precision dynamic balancing ensures smooth moving of the roll assembly, protecting bearings and reducing energy consumption during operation.

Seamless Motion Synergy: Furthermore, our backup rolls are fully customizable to interface seamlessly with various models of 2-Hi, 4-Hi, and 6-Hi mill stands and automated gauge control (AGC) systems.

FAQ

Q: How do your backup rolls prevent work roll deflection?

A: By utilizing a high-modulus forged core and precision-calculated diameters, our rolls support a higher loading capacity, providing a rigid "backbone" that ensures smooth moving of the strip.

Q: What surface hardness is recommended for cold rolling?

A: We typically recommend a range of 60-75 HSD to ensure optimal driving quiet wear resistance while maintaining the toughness needed to prevent surface spalling.

Q: Can these rolls handle high-speed automated rolling lines?

A: Yes. AstraRoll backup rolls are balanced and ground to extreme tolerances (≤0.005mm) to facilitate smooth driving and precision control at maximum mill speeds.

Q: Do you offer customization for non-standard mill stands?

A: Absolutely. Our backup rolls are fully customizable to interface seamlessly with various models of legacy or specialized mill housings and bearing assemblies.

Q1. Are you a trader or direct factory?

We are a direct manufacturing factory with over 20 years of expertise in high-end industrial rollers, casters and material handling solutions. Our facility operates with ISO-certified quality management systems, allowing us to maintain full control over production cycles and quality standards. Throughout two decades of growth, we have established deep, long-term strategic partnerships with several listed companies and global automation leaders, proving our reliability as a high-tier industrial supplier.

Q2. What are your main products?

AstraRoll specializes in the engineering and production of three core product lines: Industrial Rollers, Heavy-Duty Wheels, and Precision Casters. We do not just sell components; we provide integrated movement and transport solutions. Our products are widely utilized across high-demand sectors, including: New Energy, Lithium Battery, Mining, Heavy Industry, Medical Institutional, Agriculture and Logistics.

Q3. What about delivery time?

We deeply understand that project timelines are critical.
Standard Products: Usually dispatched within 7–15 working days if the components are in stock.
Customized/OEM Orders: Depending on the complexity and volume, the lead time typically ranges from 20–35 days. This includes time for technical drawing confirmation, specialized tooling, and rigorous pre-shipment testing.
Shipping Methods: We offer flexible global logistics solutions, including FOB and CIF terms. We ship via Sea Freight (for bulk industrial orders), Air Freight (for urgent project needs), and International Express (DHL/FedEx/TNT) for smaller components or samples.

Q4. How can I get a quote for customized products?

Since a significant portion of our business involves specialized engineering, pricing is tailored to your specific technical requirements. To provide an accurate quote, please provide the following details: Technical Drawings or Sketches, Application Environment, Quantity, Special Requests. Our engineering team typically reviews and responds to custom inquiries with a formal quotation within 24–48 hours.

Q5. What is your payment?

TT / Paypal / Western Union / LC / Credit Card etc. are all available to us.