NK 1212
The NK 1212 is a machined‑ring needle roller bearing without inner ring. Its design assumes that the shaft itself will serve as the inner raceway (i.e. the shaft must be hardened/ground). This makes the NK 1212 very compact, low‑profile and suitable for light weight or space‑constrained applications where shaft treatment is already handled, such as small motors or compact gear assemblies.
NKI 1516
The NKI 1516 is a machined‑ring needle roller bearing with inner ring, providing a hardened raceway independent of the shaft — which means it can be used even if the shaft is not specially treated. It offers excellent radial load capacity while maintaining a compact cross‑section, making it ideal for gearboxes, small motors, and industrial machinery requiring low-profile bearings. The needle‑roller and cage assembly ensures smooth rotation, good rigidity, and reduced friction under load
NKI 2530
The NKI 2530 belongs to the same series of needle roller bearings with inner ring; it is designed for heavier‑duty applications where larger shaft diameter is needed while still offering compact radial space usage. It is suitable for larger industrial gearboxes, conveyors, heavy machinery shafts, and other systems where strong radial load support and compact bearing profile are required.
NKIS 50
The NKIS 50 is a single‑row, machined‑ring needle roller bearing with inner ring, designed for applications where radial space is tight but high radial load capacity and stability are required. Its dense complement of fine rollers guided by a steel cage — combined with a sturdy outer ring with flanges — delivers excellent stiffness, smooth rotation, and even load distribution under heavy-duty or continuous operation. Because the bearing comes complete with its own inner ring, it's a suitable choice in situations where the shaft surface isn’t hardened or ground to function as a raceway, ensuring proper bearing seating, easier installation, and long service life when properly lubricated.
NA 4900
The NA 4900 is the smallest standard machined‑ring needle roller bearing with inner ring in the “NA 49..” series, designed for very compact, low‑cross‑section radial load applications. Its small dimensions make it suitable for precision assemblies, small motors or pumps, and wherever minimal space and light loads are involved. Despite its compact size, it retains the typical advantages of needle roller bearings: high radial load capability relative to its size, smooth rotation, and reliable performance with proper lubrication.
NA 4901
The NA 4901 is a single‑row needle roller bearing with machined rings and an inner ring, featuring outer ring flanges for guidance. It delivers high radial load capacity while keeping a low cross‑sectional profile — well suited for compact mechanical assemblies, small gearboxes, and lightweight industrial equipment where space is constrained but load demands exist. The needle‑roller configuration gives reliable, smooth rotation and good rigidity under load, and its steel construction ensures durability and a long service life.
NA 4902
The NA 4902 is a single‑row needle roller bearing with machined rings, flanges on the outer ring, and an inner ring — designed to deliver high radial load capacity while maintaining a low cross‑sectional height, making it ideal for assemblies where radial space is limited. Its compact form factor and dense arrangement of fine rollers ensure smooth, precise rotation, high stiffness, and reliable load distribution under continuous or heavy-duty conditions. This bearing is commonly used in gearboxes, pumps, alternators, and other mechanical systems needing durable performance and efficient operation.
NA 4903
The NA 4903 is a single‑row needle roller bearing with machined rings and an inner ring, designed to deliver high radial load capacity while maintaining a low cross‑sectional profile. Its dense pack of needle rollers gives it high stiffness and excellent load distribution, making it suited for gearboxes, pumps, small motors, and other compact mechanical assemblies where space is limited but reliability is critical. The outer ring includes two integral flanges for axial guidance and typically features lubrication groove/holes to support maintenance and smooth operation under continuous load.
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NA 4904
The NA 4904 is a single‑row needle roller bearing with a machined outer ring and inner ring, featuring flanges on the outer ring for axial guidance. Its compact, low‑cross‑section design allows it to support high radial loads with stable rotation, making it ideal for gearboxes, pumps, motors, and other mechanical assemblies where space is limited. Thanks to its robust steel construction and dense needle‑roller configuration, the NA 4904 delivers dependable performance and long service life even under continuous or heavy‑duty conditions.
NA 4905
The NA 4905 is a single‑row, machined‑ring needle roller bearing with an inner ring and flanged outer ring — built to provide high radial load capacity in applications where radial space is limited. Its dense assembly of fine rollers ensures good load distribution, high stiffness, and smooth rotational performance even under heavy or continuous load. The compact profile and rugged steel construction make it suitable for gearboxes, pumps, automotive components, and general machinery needing reliable and durable bearing support.
NA 4906
The NA 4906 is a single‑row needle roller bearing with machined rings and an inner ring, featuring flanges on the outer ring. Thanks to its dense set of fine needle rollers, it can support high radial loads while maintaining a low cross‑sectional height — ideal for compact mechanical assemblies such as gearboxes, pumps, electric motors, and other industrial machinery where space is limited but load demands are high. Its solid outer ring and steel cage construction provide durability, smooth rotation, and good resistance to wear under continuous or heavy‑duty operation.
NA 4907
The NA 4907 is a single‑row needle roller bearing with machined rings and an inner ring, featuring flanges on the outer ring to guide axial alignment. Its dense set of needle rollers provides high radial load capacity and good rigidity while keeping the bearing’s cross‑sectional height low — ideal for compact mechanical assemblies, gearboxes, pumps, and other industrial equipment where space is limited but load demands are high. Designed for durability and smooth rotation, NA 4907 performs well under continuous or heavy‑duty operation.
NA 4908
The NA 4908 is a single‑row needle roller bearing with machined rings and an inner ring, featuring flanges on the outer ring for axial guidance. Its design allows for a large number of small-diameter rollers, which gives it high radial load capacity and excellent stiffness while keeping the sectional height low — ideal for compact mechanical assemblies, gearboxes, pumps, alternators, and other industrial applications where space is limited but load demands are high. Constructed from bearing‑grade steel with a steel cage, it provides smooth, dependable rotation with good wear resistance and long service life under continuous or heavy‑duty use.
NA 4909
The NA 4909 is a machined‑ring needle roller bearing with an inner ring, designed to deliver high radial load capacity while still maintaining a relatively low cross‑section — making it ideal for applications where radial space is limited but load demands are significant. Its dense arrangement of needle rollers provides high stiffness, good load distribution and smooth rotation under load. The outer ring includes flanges for axial guidance, and the bearing’s design offers stable, reliable service even under continuous or heavy loads. This makes the NA 4909 suitable for industrial gearboxes, pumps, transmissions, and other heavy‑duty mechanical systems where compactness and durability matter.
NA 4910
The NA 4910 is a single‑row, machined‑ring needle roller bearing with inner ring and flanged outer ring. It offers high radial load capacity and excellent stiffness while maintaining a low cross‑sectional height — making it suitable for compact mechanical assemblies, gearboxes, pumps, alternators, and other machinery where radial space is limited but load demands are high. The design allows for smooth, precise rotation, good load distribution, and easy relubrication thanks to lubrication groove/holes in the outer ring. Its robust construction ensures reliability and long service life under continuous or heavy‑duty operation.
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