The maintenance of your rollerskis are really easy.
Just keep your skis clean end dry. After a trip with lots of soil and salt, the most important thing is to keep your skis dry. Store them inside a temperated room. To faster drying, use a heated floor.
Swenor bearings is seald quality bearings. There is no use for oil or fat. The use of any penetrating fluid (as WD40) will force itself into the bearing, the fat inside will drift away, causing your bearig to fail.
Our Ceramic Bearing must always be serviced and maintenanced.