NNC 4948 CV Bearings
NNC 4948 CV Bearings
319448 B-2LS Bearings
319448 B-2LS Bearings

NNC 4848 CV Bearings

NNC 4848 CV Bearings
NNC 4848 CV Bearings

NNC 4848 CV Bearings Double row full complement cylindrical roller bearing, NNCF design, with relubrication feature

Technical Specification of NNC 4848 CV Bearings


Dimensions of NNC 4848 CV Bearings

240 mm
Bore diameter
300 mm
Outside diameter
60 mm
261 mm
Shoulder diameter inner ring
275 mm
Shoulder diameter outer ring
8 mm
Width annular lubrication groove outer ring
4 mm
Diameter lubrication hole (outer ring)
min.2 mm
Chamfer dimension (open bearings

Abutment Dimensions of NNC 4848 CV Bearings

min.249 mm
Abutment diameter shaft
254 mm
Abutment diameter shaft
max.292 mm
Abutment diameter housing
max.2 mm
Fillet radius
NCF 3004 CV bearing

Caliculation Data of NNC 4848 CV Bearings

Basic dynamic load ratingC
539 kN
Basic static load ratingC0
1 290 kN
Fatigue load limitPu
125 kN
Reference speed 
900 r/min
Limiting speed 
1 100 r/min
Minimum load factorkr

Mass of NNC 4848 CV Bearings

Mass bearing

Product Features of NNC 4848 CV Bearings

  • high carrying capacity
  • high stiffness
  • Adapt to axial displacement
    Bearings with ribs on both inner and outer rings are excluded.
  • low friction
  • Open flange design
    Together with the roller end design and surface finish, it promotes lubricant film formation, which reduces friction and increases axial load capacity.
  • long lasting
    Logarithmic roller profile reduces edge stress at roller/raceway contact and susceptibility to misalignment and shaft deflection.
  • Enhanced operational reliability
    The surface finish of the roller and raceway contact surfaces supports the formation of a hydrodynamic lubricant film.
  • separable and interchangeable
    The separable parts of cylindrical roller bearings are interchangeable. This facilitates installation and removal as well as maintenance inspections.

Applications of NNC 4848 CV Bearings

  • Here are examples of applications in which Cylindrical roller bearings might be used:​
  • Mining operations, paper mills, oil fields, marine industry, steel, electrical, construction machinery, all types of specialized machinery and all types of heavy industry.
Applications of W 618/0.6 Bearings
Applications of Bearings
Wind Turbines
Applications of Bearings
Steel Industry
Applications of Bearings
Applications of Bearings
Food Processing Machinery
Applications of Bearings
Applications of Bearings
Mining & Construction
Applications of Bearings
Electric motors and generators

Product classification of Cylindrical roller bearings

FAQ of NNC 4848 CV Bearings

  • Ball bearings are ideal for high-speed rotation, while roller bearings are more suited for high loads.
  • Because cylindrical roller bearings have separable inner and outer rings, they generally do not come with seals (open specification). As such, please apply seals or other protection around the equipment mounting.
  • EW Series bearings are small and utilize a pressed cage, making them suitable for standard operating conditions. ET Series bearings use a polyamide-resin cage suited for high temperatures. Finally, EM Series bearings have machined cages for use in harsh conditions such as gearboxes or vibrating machinery or in applications where the bearing must be quiet, such as in mid-to-large size motors.

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