Sirframe Control Needle Track Rollers

RBC Aerospace Bearings offers a full line of Mil Spec standards and many specialty and custom airframe control needle track rollers to the aerospace industry and all major OEM specifications. RBC airframe control needle track rollers conform to SAE-AS39901, formerly MIL-B-3990. These bearings are designed for use as track rollers with a very thick outer ring to withstand heavy rolling loads. They are corrosion protected, grease lubricated, sealed, or unsealed.
Airframe control needle track roller rings and needle rollers are made from high carbon chrome steel, AISI 52100, hardened, and they are precision ground. For protection from corrosion under heavy loads, the O.D. of the bearing may be chrome plated. Exposed surfaces may be cadmium or zinc nickel plated. For improved corrosion resistance RBC also supplies bearings made of hardened stainless steel alloy, AISI 440C or AeroCres® reduced maintenance, highly corrosion resistant steel.
RBC airframe control needle track rollers are available with either single or double roller paths, cylindrical or crowned O.D.s, and an optional self-aligning outer ring feature. These bearings are most commonly lubricated 80 to 100% fill in compliance with Mil-PRF-81322, Mil-PRF-23827, and Boeing’s BMS3-33 specifications.