Custom Metering Roller for Printing and Packaging

The AstraRoll Custom Metering Roller (Chrome Roller) is a high-precision fluid-transfer component designed specifically for fluid dosing, ink metering, and precise adhesive application systems in the printing and flexible packaging sectors. Positioned within doctor-blade setups, gravure ink fountains, or multi-roll coating heads, this roller acts as the mechanical gatekeeper controlling film thickness.

To withstand continuous wiping from steel doctor blades and the chemical erosion of solvent-based fluids, the roller features a heavy, industrial-grade electroplated chromium exterior. Advanced cylindrical finishing ensures a uniform geometric profile under intense hydraulic pressure, allowing converters to process ultra-thin liquid coatings without layer thin-spots or fluid starvation.

Technical Parameter

Core Shaft Base: Premium 45# Seamless Carbon Steel Tubes / Forged Alloy Steel Cores

Surface Treatment: Industrial Electroplated Hard Chrome (Thickness ≥0.15mm)

Surface Hardness: HV850 - 1050 / HRC60 - 64 (Immune to doctor blade wear)

Surface Topography (Ra)Precision Finished: Ra ≤0.1μm to 0.2μm (Mirror or customized matte)

Total Indicator Runout (TIR): ≤0.005mm Micron-Level Concentricity

Dynamic Balancing Level: ISO 21940 Grade G2.5 standard for vibration-free rotation

Corrosion Resistance: Excellent protection against solvent inks, water-based glues, and UV coatings

Cylindricity Tolerance: ≤0.005mm across the entire face width

Applications

Flexible Packaging Lamination: Serving as the dosing and applicator roller in solventless or solvent-based dry laminating machinery.

Rotogravure & Flexo Printing: Metering liquid ink delivery from ink pans to anilox sleeves or plate cylinders without misting.

Precision Web Coating: Calibrating silicones, adhesives, and chemical barriers in optical film, label, and release sheet converting lines.

Paper & Board Varnishing: Providing uniform overprint varnish (OPV) application in high-speed offset and packaging finishing lines.

Why Choose AstraRoll's Custom Metering Roller for Printing and Packaging?

Micron-Level Concentricity for Perfect Layer Gauging (≤0.005mm Runout): Any concentricity error creates cyclical variations in the fluid gap, leading to unwanted coating stripes and uneven ink distribution. We perform final finish grinding directly on the roller's operating bearing housings, holding total indicator runout (TIR) to 0.005mm to ensure flawless cross-web fluid uniformity.

Ultra-Hard Chromium Shield Against Doctor Blade Scratching (HRC≥60): Continuous friction from steel doctor blades quickly grooves inferior metals, ruining the metering threshold. AstraRoll applies an industrial electroplated hard-chrome shell rated at HV850-1050, preventing scratching and micro-pitting to secure an extended operational life.

Tailored Roughness for Stable Fluid Pick-Up: Fluid transfer depends directly on correct surface chemistry and topography. Whether your process requires a mirror polish (Ra≤0.1μm) for low-viscosity ink or a controlled matte micro-texture for high-viscosity coatings, our CNC texturing ensures uniform fluid pick-up and complete release.

ISO G2.5 Dynamic Balance Eliminates Fluid Spitting: High-speed rotation triggers structural vibrations that destabilize the liquid meniscus, causing ink spitting or coating waves. Our rollers undergo computer-stabilized dynamic balancing under ISO 21940 G2.5 metrics, maintaining a rock-steady fluid profile at maximum system speeds.

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.