NSK Spherical Roller Bearings , Cylindrical Bore Bearings 21309EAE4 ,D=45

Description

NSK Spherical Roller Bearings , Cylindrical Bore Bearings 21309EAE4 ,D=45

 

Bearing
Numbers
Boundary Dimensions
(mm)
Basic Load Ratings
(kN)
Limiting Speeds
(min-1)
Constant

e
Axial Load
Factors
Mass
(kg)
approx.
d D B r
min.
Cr C0r Thermal Reference Mechanical Grease Oil
Y2 Y3 Y0
21309EAE4 45 100 25 1.5 149 144 6000 9000 5000 6300 0.23 4.3 2.9 2.8 0.96

 

 

DESIGN, TYPES, AND FEATURES

Various types of high load capacity spherical roller bearings are available. Types EA, C and CD have pressed-steel cages, and type CA has machined-brass cages. EA-type bearings listed here are classified as NSKHPSTM bearings, which offer particularly high load-carrying capacity, high limiting speeds, and superior performance under high-temperature operating conditions up to 200 °C.
An oil groove and holes are located in the outer ring to supply lubricant, and the bearing numbers are suffixed with E4.
To use bearings with oil grooves and holes, an oil groove should be located in the housing bore since depth for the groove in the bearing is limited. The dimensions of the oil groove and number of holes present are listed in Tables 1 and 2.
When bearings with a hole for a locking pin to prevent outer ring rotation are required, please contact NSK.

□Formulation of Bearing Designations

Spherical Roller Bearings
  Example:

 


①Bearing Series     239, 230, 240, 231, 241, 222, 232, 213, 223 : Spherical roller bearings
②Bore number   Bore number indicates bore diameter. Bore number X 5 (mm)
③Internal design      EA, CA : High load capacity
④Cage  M : Machined-brass cage (for CA Design)
Omitted: Pressed-steel cage (for EA Design)
⑤⑥Ring design  K : Tapered bore of inner ring (taper 1 : 12)
K30 : Tapered bore of inner ring (taper 1 : 30)
E4 : Lubricating groove in outside surface and holes in outer ring
⑦Internal clearance     Omitted : CN clearance, C3 : Clearance greater than CN,
C4 : Clearance greater than C3, C5 : Clearance greater than C4
⑧Tolerance class      Omitted : ISO Normal, P6 : ISO Class 6, P5 : ISO Class 5, P4 : ISO Class 4
⑨Special specification   S11 ; Dimensional stabilizing treatment: working temperature under 200 °C
(omitted for EA design)
⑩NSKHPSTM     *H* : NSKHPSTM designation
Tolerance Class : ISO Normal

Product form

NSK Spherical Roller Bearings , Cylindrical Bore Bearings 21309EAE4 ,D=45   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN)... Read more

SKU: 21309EAE4
Barcode: 21309EAE4

$83.85 Excl. VAT

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    Description

    NSK Spherical Roller Bearings , Cylindrical Bore Bearings 21309EAE4 ,D=45

     

    Bearing
    Numbers
    Boundary Dimensions
    (mm)
    Basic Load Ratings
    (kN)
    Limiting Speeds
    (min-1)
    Constant

    e
    Axial Load
    Factors
    Mass
    (kg)
    approx.
    d D B r
    min.
    Cr C0r Thermal Reference Mechanical Grease Oil
    Y2 Y3 Y0
    21309EAE4 45 100 25 1.5 149 144 6000 9000 5000 6300 0.23 4.3 2.9 2.8 0.96

     

     

    DESIGN, TYPES, AND FEATURES

    Various types of high load capacity spherical roller bearings are available. Types EA, C and CD have pressed-steel cages, and type CA has machined-brass cages. EA-type bearings listed here are classified as NSKHPSTM bearings, which offer particularly high load-carrying capacity, high limiting speeds, and superior performance under high-temperature operating conditions up to 200 °C.
    An oil groove and holes are located in the outer ring to supply lubricant, and the bearing numbers are suffixed with E4.
    To use bearings with oil grooves and holes, an oil groove should be located in the housing bore since depth for the groove in the bearing is limited. The dimensions of the oil groove and number of holes present are listed in Tables 1 and 2.
    When bearings with a hole for a locking pin to prevent outer ring rotation are required, please contact NSK.

    □Formulation of Bearing Designations

    Spherical Roller Bearings
      Example:

     


    ①Bearing Series     239, 230, 240, 231, 241, 222, 232, 213, 223 : Spherical roller bearings
    ②Bore number   Bore number indicates bore diameter. Bore number X 5 (mm)
    ③Internal design      EA, CA : High load capacity
    ④Cage  M : Machined-brass cage (for CA Design)
    Omitted: Pressed-steel cage (for EA Design)
    ⑤⑥Ring design  K : Tapered bore of inner ring (taper 1 : 12)
    K30 : Tapered bore of inner ring (taper 1 : 30)
    E4 : Lubricating groove in outside surface and holes in outer ring
    ⑦Internal clearance     Omitted : CN clearance, C3 : Clearance greater than CN,
    C4 : Clearance greater than C3, C5 : Clearance greater than C4
    ⑧Tolerance class      Omitted : ISO Normal, P6 : ISO Class 6, P5 : ISO Class 5, P4 : ISO Class 4
    ⑨Special specification   S11 ; Dimensional stabilizing treatment: working temperature under 200 °C
    (omitted for EA design)
    ⑩NSKHPSTM     *H* : NSKHPSTM designation
    Tolerance Class : ISO Normal

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    NSK Spherical Roller Bearings , Cylindrical Bore Bearings 21309EAE4 ,D=45

    NSK Spherical Roller Bearings , Cylindrical Bore Bearings 21309EAE4 ,D=45

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