Koyo: JR12X15X22.5 Inne Ring Inner Rings are made of rolling bearing steel and after hardening there bores, raceways and end surfaces are ground. Metric series inner rings may be used to provide inner raceway surfaces for metric series radial needle roller bearings and metric series drawn cup needle roller bearings. MPN: JR12X15X22,5 EAN: 0605790217173 JR12X15X22.5 Inne Ring Attributes: Inside Diameter: 12mm MFR Part No.: JR12x15x22.5 Outside Diameter: 15mm Product Type: Inner Ring Width: 22.5mm