RBC offers a full line of Mil Spec standards as well as specialty airframe control needle roller bearings that conform to OEM specifications. RBC airframe control needle roller bearings conform to SAE-AS39901, formerly MIL-B-3990. Many of these bearings are designed for use as track rollers with a thick cross-section outer rings to withstand heavy rolling loads. They are corrosion protected, grease lubricated, sealed, or unsealed. Other needle roller bearings are designed for use in housings and have lubrication holes and grooves to allow for greasing through shaft or housing. Stud type cam followers are available to simplify mounting configurations while allowing for relubrication through the stud.
Rings and needle rollers for these products are made from high carbon chrome steel, AISI 52100, hardened and precision ground. For protection from corrosion under heavy rolling loads, the O.D. of track roller bearings may be chrome plated. Studs for cam followers are produced from bearing quality steel, hardened to 60 HRC in the raceway area. 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 roller bearings are available with either single or double roller paths, cylindrical or crowned O.D.s, and self-aligning outer ring features. These bearings are most commonly lubricated 80 to 100% full of grease in compliance with Mil-PRF-81322 or Mil-PRF-23827 specifications.
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