319448 B-2LS Bearings
NNC 4848 CV Bearings
2023-04-05
NNF 5044 B-2LS Bearings
NNF 5044 B-2LS Bearings
2023-04-05

319448 B-2LS Bearings

319448 B-2LS Bearings
319448 B-2LS Bearings

319448 B-2LS Bearings Double row full complement cylindrical roller bearing, NNCF design, with relubrication feature

Technical Specification of 319448 B-2LS Bearings

NNCF-5004-CV-Bearings

Dimensions of 319448 B-2LS Bearings

d
240 mm
Bore diameter
D
320 mm
Outside diameter
B
95 mm
Width
C
94 mm
Outer ring width (sealed bearing)
d1
269.2 mm
Shoulder diameter inner ring
D3
314 mm
Snap ring groove diameter at outer ring
C1
83.2 mm
Distance between two snap ring grooves of the outer ring outside surface
 
+0.2 mm
Tolerance for distance C1
C2
5.4 mm
Distance outer ring side face – snap ring groove (sealed bearing)
b
6.3 mm
Width snap ring groove outer ring
b1
8 mm
Width annular lubrication groove outer ring
K
6 mm
Diameter lubrication hole (outer ring)
r
min.1.8 mm
Chamfer dimension (sealed bearing)
r3,4
min.1 mm
Chamfer dimension

Abutment Dimensions of 319448 B-2LS Bearings

da
min.247 mm
Abutment diameter shaft
das
265 mm
Abutment diameter shaft
Ca1
75 mm
Abutment width applying for SW snap rings (sealed brg.)
 
0.2 mm
Tolerance for abutment Ca (SW snap rings)
Ca2
71 mm
Abutment width applying for DIN 471 snap rings (sealed brg.)
 
0.2 mm
Tolerance for abutment Ca (DIN 471 snap rings)
ra
max.1.5 mm
Fillet radius
NCF 3004 CV bearing

Caliculation Data of 319448 B-2LS Bearings

Basic dynamic load ratingC
952 kN
Basic static load ratingC0
2 040 kN
Fatigue load limitPu
200 kN
Limiting speed 
360 r/min
Minimum load factorkr
0.4

Mass of 319448 B-2LS Bearings

Mass bearing
20.1kg

Product Features of 319448 B-2LS 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 319448 B-2LS 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
Cement
Applications of Bearings
Wind Turbines
Applications of Bearings
Steel Industry
Applications of Bearings
Railways
Applications of Bearings
Food Processing Machinery
Applications of Bearings
Motorcycles
Applications of Bearings
Mining & Construction
Applications of Bearings
Electric motors and generators

Product classification of Cylindrical roller bearings

FAQ of 319448 B-2LS 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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