Series NBF Airframe track rollers are designed for high load carrying capability, light weight, and for slow rotation or oscillatory motion. They are used in aircraft flap, slat and control applications, and in numerous non-aircraft applications.
Series NBF track rollers are non-separable units, comprised of an inner ring, needle rollers, retaining washers and outer ring made extra-thick to better withstand rolling loads. The end washers are fastened to the inner ring.
Lubrication grooves and holes are provided for relubrication in the inner ring only, since the outer ring must serve as a roller.
For protection from corrosion under the heavy rolling loads, the O.D. of the bearing is chrome plated. Other exposed surfaces, as mounted, are cadmium plated, or zinc-nickel plated. The NBF series offers a corrosion resistant alternative to conventional yoke type cam followers.