Welcome to Linqing Xinshengdi Bearing Co., Ltd.
NNF5020 ADA-2LSV/2NR Full Complement Cylindrical Roller Bearing
- Full Complement Architecture: Maximum possible roller density for unmatched radial load handling without an internal cage.
- Sealing & Location: Dual integrated rubber contact seals (2LSV) paired with dual outer ring snap rings (2NR) for rapid mounting.
- Internal Grease: Factory pre-lubricated with a stable industrial grease designed for the heavy loads of overhead crane sheaves.
Deep Application & Technical Narrative:The NNF5020 ADA-2LSV/2NR is a highly specialized double-row, full complement cylindrical roller bearing engineered for crane sheaves, wire rope pulleys, and lifting block assemblies. Because it lacks a traditional roller cage, the entire internal space is filled with rollers, providing the absolute highest radial load capacity possible in a compact design. The suffix tells a precise technical story: "2LSV" indicates heavy-duty rubber contact seals on both sides to keep water and grit out, while "2NR" denotes snap rings pre-installed on the outer ring for easy axial location inside the pulley bore. We meticulously handle the final seal assembly and snap ring placement for every NNF5020 in our workshop, verifying that the full complement of rollers runs smoothly without crowding.
Customized B2B Supply & Packaging Solutions:DBS Bearings delivers a full range of bearing types tailored directly to the lifting and hoisting sector. The NNF5020 is packaged in high-density protective casing to prevent seal damage during transport. We offer comprehensive B2B support, from custom client packaging designs to securing reliable maritime freight paths for complex international markets.
Targeted Technical Clarifications (FAQ):
Q: Why does this bearing use a full complement of rollers instead of a cage?A: A full complement configuration maximizes the contact surface area, allowing the bearing to support the extreme weight loads found in heavy lifting and crane applications.
Q: Can the outer ring take axial guidance loads from wire rope misalignment?A: Yes, the NNF series features integrated ribs on both the inner and outer rings, allowing it to manage light axial loads alongside massive radial forces.
