iSeries drum life

[Genotrom]

How long do the drums last on iSeries?
I already have some reports of lines on the sheets and drums usually only have 20-30% life.

[EarthKmTech]

they dont last life in dusty environments.

I changed a black drum yesterday at 51% life on a c360i at a minesite with black lines on print

[Bix]

Last week I changed a black drum in a clean office. Me too, the drum on the C300i was said to be at 30% and it had only done 70k pages.
The printer made a black line even though you were only printing in color. I pulled out the black drum and I noticed a crusted toner mark. I tried to clean but it didn't last long, so I preferred to replace. I hope it was an exceptional case.

[occus]

I've already seen both. Drum black with 180k and with 60k for replacement (bizhub c250i)

[blackcat4866]

I've only had occasion to change one, at yield. =^..^=