NNF5005ADB-2LSV Full-complement Cylindrical Roller Bearing
Selection Guide
The core advantage of an NNF double-row full-complement cylindrical roller bearing is the very high radial load capacity that comes from removing the cage and using a full roller complement — capacity far exceeds a caged cylindrical roller bearing of the same radial section. This makes it ideal for planet gear support, where the outer ring can act directly as the planet gear raceway, removing the need for a separate inner ring and saving radial space. The trade-off is a lower limiting speed, so it is not suited to high-speed duty. Verify: bore, outside diameter and width, whether seals are required (commonly 2LS), lubrication method and clearance, and whether a locating rib on the outer ring is needed.
Frequently Asked Questions / FAQ
Is RAYSDE NNF5005ADB-2LSV available, and what is the MOQ?
NNF5005ADB-2LSV is supplied by RAYSDE through ISO 9001:2015 certified partner factories, with both stock and build-to-order options. Standard-part MOQ is tiered by bore: ≤50mm:500 pcs / 51–100mm:100 pcs / 101–300mm:20 pcs / >300mm:4 pcs; non-standard items are quoted per drawing. Send an inquiry for formal pricing and lead time.
What are the technical specifications of RAYSDE NNF5005ADB-2LSV?
Key parameters of the NNF5005ADB-2LSV Full-complement Cylindrical Roller Bearing: bore d=25.0mm, outer D=47.0mm, width B=30.0mm, dynamic load Cr=50.1kN. For the full dimension table, load and speed data, and CAD drawings, please contact RAYSDE.
Which industries and equipment use the NNF5005ADB-2LSV Full-complement Cylindrical Roller Bearing?
The NNF series is a double-row full-complement cylindrical roller bearing, used mainly for planet gear support in planetary reducers and gearboxes, travel reducers in mining and construction machinery, rolling mill backup rolls, hoisting and winch equipment, and any position needing very high radial capacity in limited radial space.
What are the advantages of RAYSDE NNF5005ADB-2LSV versus imported brands?
As a supplier partnered with ISO 9001:2015 certified factories, RAYSDE offers NNF5005ADB-2LSV at competitive ex-works pricing with shorter lead times than comparable imported brands, plus non-standard customization and OEM support. Partner factories certified to ISO 9001:2015, with 3.1 material certificates available.
Can you provide engineering drawings and material certificates for NNF5005ADB-2LSV?
Yes—CAD/DXF/PDF high-precision drawings and 3.1 material certificates (GCr15 bearing steel) for NNF5005ADB-2LSV are available on request from RAYSDE.
NNF5005ADB-2LSV Why is the NNF full-complement cylindrical roller bearing so common in planetary reducers?
Planet gears have very little radial space available and must carry heavy radial load. An NNF bearing removes the cage and uses a full roller complement, giving radial capacity several times that of a caged bearing of the same size. Its outer ring can also serve directly as the planet gear raceway, so no separate inner ring is needed — saving radial space and simplifying the design. That combination makes it the standard solution for planet gear support. The limitation is a lower limiting speed, so high-speed designs should use a caged bearing instead.
NNF5005ADB-2LSV What are the lubrication and sealing requirements for NNF bearings?
With no cage separating them, the rollers contact each other and friction is higher, so NNF bearings depend more heavily on lubrication than caged designs — lubrication must be generous and continuous, normally by circulating gearbox oil or grease, with oil changed regularly to stay clean. Types with the 2LS suffix carry contact seals that retain grease and exclude contaminants in dusty environments. Tell us your lubrication method and ambient temperature and we will confirm the sealing and lubrication arrangement.