Advanced Water-Cooled Rollers for Precision Temperature Management

DJH Machinery’s high-performance water-cooled roller systems (also known as chill rollers or cooling cylinders) provide essential temperature control for demanding converting processes. These engineered components feature precision-designed internal circulation channels that effectively manage heat dissipation from moving webs and roller surfaces, preventing thermal buildup and maintaining optimal processing conditions. Critical for maintaining product integrity and preventing material degradation, our cooling roller technology ensures stable processing temperatures across diverse manufacturing applications. Experience improved product quality and reduced waste with reliable thermal management solutions designed for industrial converting environments.

Featured Water-Cooled Rollers

Product Specifications – Water-Cooled Rollers
Materials	Aluminum Alloy, 45# Steel, 20# Steel, 40Cr Steel, 304 Stainless Steel
Cooling Method	Water cooling with single or dual-end inlet/outlet design; optional internal spiral tubing; available in single or double-layer structures
Key Features	Water-cooled rollers are used to cool materials before winding to reduce deformation caused by shrinkage during cooling, especially in calendered film or adhesive tape coating processes
Surface Finishing Options	Hard Chrome Plating, Teflon Coating, Ceramic Coating

Water-Cooled Rollers for Precision Cooling

From plastic film production to advanced coating lines, our water-cooled rollers provide efficient temperature control, reduce material deformation, and enhance product quality. Designed for demanding industrial applications, they ensure consistent cooling, stable performance, and compatibility with high-speed lines.

Plastic Film Extrusion & Casting

Used as chill rollers in film extrusion and casting lines to rapidly cool and solidify newly extruded films, ensuring accurate thickness, optical clarity, and flatness. Key Benefit: Enhances dimensional stability and increases production speed.

Coating & Drying Lines

Placed after high-temperature ovens to cool substrates before rewinding, preventing sticking, blocking, or coating displacement. Key Benefit: Maintains coating quality and avoids downstream defects.

Laminating Applications

Used during or after lamination—especially with hot melt adhesives or heat-sensitive layers—to manage web temperature and minimize warping. Key Benefit: Supports uniform bonding and protects delicate laminates.

Printing & Embossing

Ideal for UV curing, flexographic and gravure printing, as well as embossing or calendering lines. Maintains substrate shape and ensures precision pattern retention. Key Benefit: Improves registration accuracy and ensures clean, consistent finishes.

Engineered Performance: Inside Water-Cooled Roller Technology

1. Precision Core Fabrication

Each water-cooled roller begins with a meticulously crafted core, typically carbon steel for durability or aluminum for lightweight performance. Cores are machined to precise dimensions, incorporating internal channels for efficient coolant flow to ensure thermal stability during operation.

2. High-Integrity Cladding Process

A seamless stainless steel sleeve or precision-welded plate is expertly applied over the core and permanently bonded using advanced metallurgical methods, such as explosion bonding, welding, or co-extrusion. This creates a robust, unified structure that prevents delamination and maintains thermal conductivity.

3. Advanced Surface Finishing

After cladding, rollers undergo CNC machining, fine grinding, and polishing to achieve exact tolerances for diameter, roundness, and surface smoothness. The resulting premium stainless steel surface ensures optimal heat transfer and reliability in high-temperature industrial settings.

4. Performance-Driven Material Pairing

The stainless steel surface provides superior corrosion resistance, wear durability, and compatibility with stringent hygiene standards, while the core is optimized for strength, weight, or cost. Integrated cooling channels enhance heat dissipation, boosting efficiency and performance under demanding conditions.

5. Built for Industrial Versatility

Water-cooled rollers excel in applications where temperature control is critical, offering a cost-effective alternative to solid stainless steel rollers. Their hybrid design delivers exceptional thermal management, durability, and value, making them ideal for converting, laminating, coating, and other high-performance industrial processes.

Get Our Free Samples

Curious about the quality of our water-cooled rollers? We’re happy to provide free samples for you! Just let us know your application, and we’ll confirm the sample specifications with you right away. Feel free to reach out anytime.

What Are Water-Cooled Rollers?

Water-cooled rollers are cylindrical mechanical components that incorporate internal cooling systems to maintain controlled surface temperatures during operation. Unlike conventional rollers that rely on ambient air cooling, these systems actively circulate coolant—typically water or specialized cooling fluids—through internal channels to achieve precise temperature regulation.

The fundamental characteristics of water-cooled rollers include superior heat dissipation capabilities, consistent surface temperatures, reduced thermal expansion, and enhanced dimensional stability. These rollers feature robust construction with internal coolant passages, precision-machined surfaces, and specialized sealing systems to prevent coolant leakage while maintaining optimal performance.

The cooling mechanism operates on the principle of forced convection, where coolant flows through strategically designed internal channels, absorbing heat from the roller surface and transferring it away from the processing zone. This continuous heat removal enables sustained operation at high processing speeds while maintaining material quality and preventing thermal-related defects.

Different Types and Specifications of Water-Cooled Rollers

Water-Cooled Rollers are available in various types, each tailored to specific industrial needs. Below is a detailed overview of the main types and their specifications.

Types of Water-Cooled Rollers
Type	Description	Applications	Key Specifications
Standard Water-Cooled Rollers	Basic design with internal fluid channels for moderate cooling or heating.	General material handling, low-intensity tasks	Stainless steel or carbon steel, 1.5–6mm cladding, standard surface finish (32–125 Ra).
Double Shell Spiral Baffle Rollers (DSSB)	Feature an inner shell with spiral baffles for enhanced heat transfer efficiency.	Film extrusion, paper drying, high-performance tasks	Stainless steel (304/316L), 3–10mm cladding, precision finish (4–32 Ra).
Heated Rollers	Use hot oil or steam for high-temperature applications.	Adhesive activation, textile finishing	Heat-resistant stainless steel, internal heating elements, customized surface finishes.
Chill Rollers	Designed for rapid cooling using chilled water or glycol.	Film casting, metal quenching	High thermal conductivity materials, mirror polish (4–8 Ra).
Customized Rollers	Tailored designs for unique applications, including special materials or coatings.	Specialized processes, extreme environments	Advanced alloys (e.g., 2205, 904L), custom configurations.

Specifications

Diameter and Length: Vary based on material width and process requirements, typically ranging from 100mm to over 4,000mm in length.
Material: Stainless steel (e.g., 304, 316L) for corrosion resistance; carbon steel or aluminum for cost-effective cores.
Surface Finish: Ranges from standard (125–250 Ra) to mirror polish (4–8 Ra) for hygiene-critical applications.
Cooling Capacity: Determined by fluid type, flow rate, and roller design (e.g., mono-flow or dual-flow systems).
Temperature Range: Up to 800°C for heated rollers; chilled rollers can maintain sub-zero temperatures with glycol.

Technical Parameters and Their Significance

Understanding the technical parameters of Water-Cooled Rollers is essential for ensuring they meet specific application needs.

Technical Parameters and Their Significance
Parameter	Significance	Typical Values
Cooling Fluid	Determines heat transfer efficiency; must be compatible with process and materials.	Water, glycol, oil; 5–80°C for cooling fluids.
Roller Material	Affects thermal conductivity, corrosion resistance, and durability.	Stainless steel (304, 316L), carbon steel.
Surface Finish	Impacts heat transfer, cleanability, and material contact.	4–250 Ra, depending on application.
Dimensional Accuracy	Ensures precise material handling and process consistency.	±0.1mm (standard), ±0.025mm (precision).
Temperature Uniformity	Critical for consistent processing across material width.	±1°F across roll face in advanced designs.
Bond Strength (if clad)	Ensures cladding integrity under thermal and mechanical stress.	140–280 MPa, verified by destructive testing.
Operational Temperature	Defines limits for continuous and intermittent use.	Up to 800°C for heated rollers.

These parameters guide the selection process, ensuring rollers perform reliably under specific conditions.

Industrial Applications Across Various Sectors

Water-Cooled Rollers are integral to numerous industries, each leveraging their temperature control capabilities for specific benefits.

Supplier Selection and Quality Assurance for Water-Cooled Rollers

When selecting suppliers for water-cooled rollers, it’s crucial to consider various factors to ensure quality and reliability. This section outlines the key criteria for choosing manufacturers and evaluating suppliers.

Selecting Quality Water-Cooled Roller Manufacturers

Choosing the right manufacturer for water-cooled rollers significantly impacts product quality, delivery performance, and long-term support. Evaluation criteria should encompass technical capabilities, quality systems, and service support.

Technical Capability Assessment

Technical capability assessment includes manufacturing equipment, engineering expertise, and quality control systems. Manufacturers should demonstrate capability to meet specification requirements and provide technical support throughout the product lifecycle.

Quality System Evaluation

Quality system evaluation should verify ISO certification, quality control procedures, and testing capabilities. Documented quality systems ensure consistent product quality and provide confidence in supplier capabilities.

Service Support Capabilities

Service support capabilities include technical assistance, spare parts availability, and repair services. Long-term support requirements may exceed initial product costs, making service capability a critical selection factor.

Financial Stability and Business Continuity

Financial stability and business continuity considerations ensure the supplier can provide ongoing support throughout the product lifecycle. Supplier financial health impacts availability of warranty support and long-term service capability.

Key Factors in Supplier Evaluation

Supplier evaluation should address multiple factors that impact overall value and long-term satisfaction.

Technical Expertise

Technical expertise encompasses engineering capability, application knowledge, and problem-solving ability.

Manufacturing Capability

Manufacturing capability includes equipment sophistication, capacity, and quality control systems. Advanced manufacturing capabilities often correlate with superior product quality and shorter delivery times.

Customer Service

Customer service and support capabilities significantly impact user satisfaction and long-term costs. Responsive technical support, readily available spare parts, and comprehensive documentation improve operational efficiency.

Cost Competitiveness

Cost competitiveness must be evaluated in the context of total lifecycle costs, including initial purchase price, installation costs, operating costs, and maintenance requirements. Lowest initial cost may not represent best value when total costs are considered.

Delivery Performance and Reliability

Delivery performance and reliability impact production scheduling and inventory requirements. Reliable suppliers with consistent delivery performance reduce operational complexity and improve planning effectiveness.

Our Manufacturing Prowess & R&D Capabilities

Production Scale & Qualifications

R&D and Innovation

Quality Certifications

Unmatched After-Sales Service & Support

We have a growing network of overseas service points and authorized agents in Southeast Asia, Europe, and the Americas to ensure prompt local support for your slitting and rewinding machine.