RAILKO NF21/NF22 
High Performance Water Lubricated Stern Tube Bearing Materials 

RAILKO NF21/NF22 have been the chosen bearing material for many marine applications offering low wear and friction rates, particularly in rudder and stern tubes applications. RAILKO NF21/NF22 is approved by over 30 Navies worldwide and have over 25 years proven service in warships and submarines.

RAILKO NF21/NF22 bearings are offered in stave format, as fully cylindrical or split bearings. RAILKO NF21 split bearings have the advantage of being able to be removed without the need for removal of propeller shaft which helps to reduce maintenance costs.

Both materials are approved by all major marine classification societies for propeller shaft and rudder bearing use. Other applications include steering gear, passenger gangway hinges bushes, Ro-Ro ferry ramp and bow doors and many more.

USED BY OVER 30 NAVIES WORLDWIDE. INCLUDING INDIAN NAVY