NJ 211 ECP
NJ 211 ECP Bearings
2023-05-31
NJ 211 ECM
NJ 211 ECM Bearings
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NJ 211 ECML Bearings

NJ 211 ECML
NJ 211 ECML

NJ 211 ECML Single row cylindrical roller bearing, NJ design

Technical Specification of NJ 211 ECML Bearings

Dimensions of NJ 211 ECML Bearings

d
55 mm
Bore diameter
D
100 mm
Outside diameter
B
21 mm
Width
d1
70.8 mm
Shoulder diameter of inner ring
D1
86.25 mm
Shoulder diameter of outer ring
F
66 mm
Raceway diameter of inner ring
r1,2
min.1.5 mm
Chamfer dimension
r3,4
min.1.1 mm
Chamfer dimension
s
max.1 mm
Permissible axial displacement

Abutment Dimensions of NJ 211 ECML Bearings

da
min.63 mm
Diameter of spacer sleeve
da
max.64 mm
Diameter of spacer sleeve
db
min.73 mm
Diameter of shaft abutment
Da
max.91.4 mm
Diameter of housing abutment
ra
max.1.5 mm
Radius of fillet

Caliculation Data of NJ 211 ECML Bearings

Basic dynamic load ratingC
96.5 kN
Basic static load ratingC0
95 kN
Fatigue load limitPu
12.2 kN
Reference speed 
7 500 r/min
Limiting speed 
13 000 r/min
Minimum load factorkr
0.23
Limiting valuee
0.2
Calculation factorY
0.6

Mass of NJ 211 ECML Bearings

Mass
0.76 kg

Product Features of NJ 211 ECML 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 NJ 211 ECML 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 NJ 211 ECML 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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