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Double row spherical roller bearings

21308CW33J**

3
min. 1.5
min. 1.5
23
40 49
90 81
5.5

1.5
1.5
81 49



Správné označení: 21308CW33J**

Radiální vůle: C
Přesnost: P
Stabilizace: S




Typ
Type
21308CW33J**
Konstrukce
Design
Double row spherical roller bearings
Bearing designation with cylindrical bore with tapered bore
21308CW33J** 21308CKW33J
Hlavní rozměry
Dimensions
d D B rs (min) a b
mm
40 90 23 1.5 3 5.5
Výkonové parametry
Performance parameters
Cr Cor Pu MFO-pl. maz. MFO - olej
kN min-1
97.300 102.000 12.000 4 500 5 600
Připojovací rozměry
Mounting Dimensions
da (min) Da (max) ra (max)
49 81 1.5
Hmotnost
Mass
- [ kg ] K
0.744 0.733
Corresponding adapter sleeve H308
Příslušné stahovací pouzdro AH308
Corresp. withdrawal nut KM9
Factors e Y1 Y2 Y0
0.26 2.6 3.9 2.6

 

 

Calculations

vzorec C = kN  
P = kN  
L10 = 106ot
vzorec Fa
Fr
  n=
 
L10h = h
  D=
 
L10km = 106km

Modified Rating Life

To calculate Modified Rating Life, above mentioned parameters Fa, Fr and n must be filled!



Factor of Reliability:

Kinematic Viscosity: mm²/s

Operating Oil Temperature: °C

Lubrication Type:

Filtration:

Cleanliness of Lubrication:



Viscosity Ratio:
k =

Contamination Factor:
ec =

Modified Rating Life:
L10m = x10^6 revolutions
L10mh = hr



Fa / Fr
e
X_roller_rad_double
Y_roller_rad_double
Pr kN
C/P
L10 x106 ot.
L10h hr
a1
Kinematic Viscosity at 40°C ν40°C mm2/s
Operating Oil Temperature t = °C
Dpw mm
Viskozita při provozní t mm2/s
Referenční viskozita ν1 mm2/s
Roller Simplified N
Roller Radial

Bearing frequencies

rotational speed of the inner ring

ni [RPM] 

fi [Hz] 

rotational frequency of the inner ring

fc [Hz] 

rotational frequency of the rolling element and cage assembly

fr [Hz] 

rotational frequency of a rolling element about its own axis

fip [Hz] 

over-rolling frequency of one point on the inner ring

fep [Hz] 

over-rolling frequency of one point on the outer ring

frp [Hz] 

over-rolling frequency of one point on rolling element


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