Rollers are widely used components that serve the simple yet surprisingly diverse functions of facilitating and processing material and product movements in manufacturing and/or industrial settings.  While standard rollers are rollers actually touching the material, there are also conveyor rollers available that are employed in conveyor applications.  No matter the industrial application, there is probably a roller system that is a perfect fit. The primary differentiator between rollers is the roller material at the point of contact with the material or product because this dictates the function, geometry, and available features of the rollers.

Live Shaft Rollers: engineering Roller design is typically steel journals/headers welded into the ends of a hollow tube or roller body. The journals (or shaft) turn with the roller body. The roller is considered to be a “live shaft” because the journal ends rotate with the roller. Commonly mounted to a customer’s machine or frame through the use of external bearings such as pillow block bearings. Roller shells can be steel, aluminum, or carbon fiber and can be lightweight thin-walled rollers, but also – and more typically – are heavy steel-walled rollers for high-load industrial applications. Commonly used in steel, paper, and other industries requiring strong robust roller designs and often use heavy-duty pillow block bearings for mounting on the journals. Rollers can be driven via keyways machined into the journals, therefore, allowing for the use of various drive systems to turn rollers. please go here R2R Engineering to get more live information about Manufacturers for Rollers, Cores, and Shafts.

Metallic rollers: These rollers are explicitly designed for sustaining heavy component movement because they can carry a large bearing load with a medium touch.  Metallic rollers, the workforce of rollers, are employed to move higher loads where workpieces can tolerate a bit of a rough handling touch.  These rollers are available in straight or crowned geometry across a wide range of sizes with bearing, set screw, or mounting methods.

Urethane/Rubber rollers: In general these types of rollers are found in applications that necessitate large contact and holding friction forces. They’re also found in more delicate operations such as processing/smoothing wrinkles in paper and/or plastic films. These kinds of rollers are employed where pieces cannot sustain damage on the surface or the part as a whole. Similarly, rubber rollers are employed in material processing applications where a light material is required, such as paper, textile, or sheet metal manufacturing or processing. In this fashion, they are even employed in the sheet metal industry where low gauge sheet metal is coiled up into large rolls and the surface finish integrity of the sheet metal is vitally important. These rollers can be specified with a variety of hardware choices, such as Bearings, set screws, bushing, bolts, keyways or shafts. They are also available in straight or crowned geometry with grooved or knurled heard to add friction and increase the grip strength of the roller system.

Rubber rollers are used for a variety of purposes and are found in many manufacturing processes. The basic uses for rubber rollers are found in the manufacturing processes of textiles, film, sheets, paper, and coiled metal. Rubber-covered rollers are used in all sorts of container and packaging fabricating equipment as well as machinery used for the sanding and grinding of wood, steel, and aluminum. Industrial rubber rollers or rolls are used in applications that require a high degree of contact and holding friction, and also in material processing applications requiring a soft touch. Rollers are usually in the shape of cylindrical or spherical shapes and are devices that roll or rotate, like for example, a small spoke-less wheel or a roller skate or caster. Rollers are also used in printing. For printing purposes, it is a hard rubber roller that is used to ink the type before the paper is impressed. Rubber rollers are also the ideal choice for peripheral decorating of cylindrical shapes and roll-on decorating of large flat or curved surfaces. Covered rolls are used extensively in the graphic arts industry.

Resin Rollers: Resin rollers are similar in function to rubber/urethane rollers, but resin rollers are actually metallic core base rollers that have undergone a surface application of resin coating.  These rollers are used in applications similar to urethane or rubber rollers, for applications that require a soft touch or instances where ink or resin coatings are to be applied.  Outside of industrial material movement applications, they are also typically used in the industry for packaging and/or polymer material storage applications.  These rollers are only available in straight shape but can be specified with bearings or side-mounted bolt hardware.

if you want more just look here: https://r2rengineering.com