ProExport Group
Hard Chrome-Plated Rollers
Explore Selected Hard Chrome-Plated Roller Categories
We select solutions based on the roller's function, operating conditions, and the parameters of a specific production line. Check out the available types of shafts, rollers, and industrial cylinders.
Drying rollers
Manufacture and reconditioning of drying rolls for the paper industry and other processes requiring a stable working surface.
Calender rollers
Rollers for calendering, smoothing, and imparting the required surface properties to materials in accordance with the technical documentation.
Paper-rewinding rollers
Rollers designed for guiding, rewinding and stabilizing the paper web, manufactured or reconditioned to the specifications of a specific machine.
Chrome-plated metering rollers
Rollers for the controlled and uniform application of adhesive, paint, varnish, or other process media in industrial production lines.
Distributor Rollers
Rollers designed to distribute, homogenize and level a process medium across a material surface during production.
Heating and Cooling Rollers
Rollers used for heating or cooling material, stabilizing temperature, and controlling the parameters of the manufacturing process.
Embossing Rollers
Rollers designed to impart a specific pattern, texture, or structure to materials, manufactured in accordance with process requirements.
Cylinders for gravure printing
Cylinders for industrial gravure printing, manufactured and reconditioned in accordance with the technical documentation and process requirements.
What Does Hard Chrome Plating of Rollers Involve?
Hard chrome plating creates a hard, wear-resistant working surface on the roller. We select the surface preparation, coating thickness and final finishing method based on the component’s function and operating conditions.
The final parameters of the roller depend on the condition of the substrate, the coating thickness, the geometry, and the required surface roughness.
The roller is prepared for treatment and then placed in an electroplating bath, where a layer of hard chrome is deposited on the steel core. After plating, the component undergoes final machining and dimensional inspection.
Substrate Preparation
The roller surface is cleaned, degreased, and mechanically prepared. During reconditioning, the scope of work may also include removing the old coating, inspecting the core, and grinding.
Hard Chrome Electroplating
The roller is placed in an electroplating bath. Under controlled temperature and current conditions, a layer of chromium suitable for the application builds up evenly on its surface.
Finishing and Inspection
After the coating is applied, the roller can be ground, polished or honed. We inspect its geometry, runout, dimensions and surface quality in accordance with the agreed scope of work.
Do you need chrome plating or roller reconditioning?
Please submit the basic dimensions, a technical drawing, photos of the component, and information about the operating conditions.
Request a Quote for Roller Chrome Plating Based on the information provided, we can make a preliminary assessment of the possible scope of manufacture or reconditioning.Technical Specifications for Hard Chrome-Plated Rollers
We select the coating and finish parameters based on the roller's function, core material, and operating conditions. The values below represent a typical range of specifications.
| Parameter | Specification |
|---|---|
| Type of coating | Hard chrome — applied by electroplating. |
| Core material | Carbon steel, e.g., C45; alloy steel, e.g., 42CrMo4; stainless steel or cast iron. |
| Hardness of the coating | About 800–1,000 HV , which corresponds to approximately 60–70 HRC. |
| Coating thickness | Typically 10–150 µm . During reconditioning, the thickness may be up to 4,000 µm, or 4 mm . |
| Surface roughness Ra | Typically, below 0.2–0.4 µm . Mirror finish, approximately 0.02–0.05 µm . |
| Geometric accuracy | Radial runout below 0.01 mm . Circularity below 0.02 mm . |
| Thermal resistance | Stable operation up to about 200°C while maintaining the hardness of the coating. |
| Dimensions available | Diameters up to 800 mm and a working length of up to 6,000 mm . We determine the details for larger orders on a case-by-case basis. |
We confirm the final specifications after reviewing the technical documentation or the supplied roller. The selection of chrome thickness, surface roughness, and finish depends on the application, the condition of the core, and the required tolerance of the working surface.
What sets our chrome-plated rollers apart?
We select the coating, geometry, and surface finish based on the roller's function, operating conditions, and the requirements of the specific production line.
High hardness and abrasion resistance
A hard chrome coating with a hardness of up to 60–70 HRC, or about 1,000 HV , increases the work surface's resistance to wear and helps extend the roller's service life.
Smooth surface and low coefficient of friction
Precision grinding and polishing make it possible to achieve a surface with a roughness of Ra as low as approximately 0.02 µm . This reduces material buildup and promotes stable operation at higher speeds.
Protecting surfaces from corrosion and chemicals
The chrome layer forms a barrier that protects the steel core from moisture and certain substances used in industrial processes. We select the appropriate resistance range based on the specific medium and operating temperature.
High dimensional precision
Final machining allows for tight tolerances and radial runout less than 0.01 mm . This is important in areas such as printing, lamination, material handling, and metalworking.
Hardness, coating thickness, geometry, and surface roughness are determined based on the application and the customer’s technical documentation.
Hard Chrome Plating of Industrial Rollers
Chrome-plated rollers are used in production lines where wear resistance, geometric precision, and an appropriate working surface quality are important.
Printing and Graphic Arts Industry
Inking, dampening and guide rollers used in offset and flexographic presses. They provide precise, even ink distribution and stable web handling.
Plastics Processing
Rollers used in calenders, laminators, and film production lines. They help achieve a smooth surface, uniform thickness, and consistent product specifications.
The Textile Industry
Conveyor, heating, and calendering rolls used in finishing processes. The surfaces are selected based on fiber friction, temperature, and the chemicals used.
Metalworking and Metallurgy
Straightening, guide, and feed rolls used in sheet metal rolling, pickling, and galvanizing lines. Chromium plating increases the wear resistance of the working surfaces.
The Wood and Paper Industry
Rollers for applying adhesives and varnishes, guide rollers, and calenders for smoothing paper. The surfaces are selected based on the resins used, temperature, and continuous load.
Packaging Industry
Guide rollers used in packaging machines, laminators, and rewinding machines. They ensure smooth transport of film, paper, and other materials without damaging them.
Chemical and Pharmaceutical Industries
Rollers used in production lines that require corrosion-resistant surfaces, easy cleaning, and materials compatible with the media being processed.
Food Industry
Rollers used in conveyors, feeders, and process equipment. The surface type is selected based on contact with the medium, cleaning requirements, and operating conditions.
We select each roller for a specific application. When determining the parameters, we analyze the type of material, the temperature, the operating speed, the loads involved, and the requirements for the work surface.
Key Properties of Hard Chrome-Plated Rollers
Hard chrome plating combines high hardness, the required surface quality and the ability to tailor coating parameters to the function of a specific roller.
High surface hardness
A hard chrome coating can reach a hardness of approximately 800–1,000 HV . This helps reduce scratches, dents, and abrasive wear on the work surface.
Discharge of Electrostatic Charges
A metallic surface can help dissipate electrostatic charges if the roller and the machine are properly grounded. This is important, among other things, when feeding film, paper, and other web materials.
Chemical and Thermal Resistance
Hard chrome can be used in humid environments and in contact with selected process media. We always select the required chemical resistance and operating temperature for the specific application and core material.
Low friction and limited adhesion
A precision-ground and polished surface reduces friction and the adhesion of adhesives, paints, varnishes and web materials. This makes the roller easier to clean and helps maintain process stability.
The properties of the coating should not be selected solely based on hardness. Other important factors include the process medium, load, temperature, operating speed, required friction and the possibility of future roller reconditioning.
Frequently Asked Questions About Chrome-Plated Rollers
Review the key information on chrome plating, reconditioning, technical specifications and the use of rollers in industrial processes.
01 What Does the Hard Chrome Plating Process for Rollers Involve?
The process begins with cleaning and preparing the roller surface. A layer of hard chrome is then deposited in an electroplating bath. After coating, the roller can be ground, polished or honed before undergoing final dimensional and quality inspection.
02 What is the hardness of the coating on chrome rollers?
A hard chrome coating typically has a hardness of approximately 800–1,000 HV, which corresponds to approximately the value of 60–70 HRC. The exact parameters depend on the process and the requirements of the specific application.
03 Which Industrial Applications Are Hard Chrome-Plated Rollers Suitable For?
Chrome-plated rollers are used, among other things, in the printing, paper, textile, packaging, metal, chemical, and plastics processing industries. Surface parameters are selected based on the roller’s function and operating conditions.
04 Can chrome-plated rollers be used with adhesives or paints?
Yes, a properly finished and polished chrome surface can reduce the adhesion of adhesives, paints, varnishes, and resins. Before applying a coating, however, you should check its resistance to specific media, temperature, and cleaning method.
05 What materials are used to make roller cores?
Roller cores may be made from carbon steel, such as C45, alloy steel, such as 42CrMo4, stainless steel or cast iron. The material is selected according to loads, temperature, dimensions and operating conditions.
06 What is the maximum operating temperature of a chrome-plated roller?
In typical applications, the coating can operate at temperatures reaching approximately 200°C. The permissible temperature of the entire roll also depends on the core material, the design, the fits, and the process conditions.
07 Do you offer reconditioning of worn rollers?
Yes. The scope of reconditioning may include removing the old coating, inspecting and repairing the core, restoring the dimensions, re-plating with hard chrome, and grinding or polishing the working surface.
08 What are the maximum dimensions of the rollers you manufacture?
The typical range includes rollers with a diameter of up to 800 mm and working length up to 6,000 mm. Larger components can be reviewed individually upon receipt of the technical documentation.
09 What are the delivery options within Poland?
We arrange transportation throughout the country. We determine the delivery method based on the dimensions, weight, surface protection, and the ability to unload the item at the recipient’s location.
