Noctua má ložiská uzavreté. Majú vydržať 6 rokov bez nejakého mazania.
Citácia:
Can I disassemble my fan for cleaning?
In order to ensure flawless operation over many years of usage, all Noctua fans come with a premium grade SSO bearing, which is fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.