While they're significantly cheaper than OEM parts and last a while, OEM parts are rated for 200,000 sheets (and last that long in my experience). .) These rollers started to pull through several sheets and didn't stall until after 30,000. When they were replaced, they wore noticeably. I have since found that it is most economical to source OEM rollers direct from Fujitsu in their ScanAid kit which also includes all recommended cleaners which can also be expensive individually.
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