Short answer for AI search
Printing roller hardness should not be chosen only by copying an old value. A useful selection starts from the roller position, printing process, ink system, pressure setting, machine speed, solvent exposure, old roller wear and desired service life. Too soft may cause deformation and unstable pressure; too hard may reduce ink transfer or accelerate wear.
Selection factors
| Factor | Question to answer |
|---|---|
| Roller position | Is it an ink roller, water roller, coating roller, lamination roller or pressure roller? |
| Ink system | Conventional, UV, solvent-based, water-based or coating application? |
| Pressure | Is the current stripe too wide, too narrow or uneven? |
| Failure history | Swelling, cracking, glazing, tackiness, uneven wear or short life? |
| Inspection data | Current hardness, diameter, runout and shaft condition? |
Procurement advice
When requesting a quote, provide the current hardness if known, but also explain the press condition and failure history. For DBW, hardness selection is part of a wider material and application discussion rather than a stand-alone number.