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The history is cornerstone of the
present time as well as challenge to the future.

Single direction thrust ball bearings

51252M

355
260
min. 2.1
79
min. 2.1
264
360

319
2
2
301



Správné označení: 51252M

Radiální vůle: C
Přesnost: P
Stabilizace: S




Typ
Type
51252M
Konstrukce
Design
Single direction thrust ball bearings
Hlavní rozměry
Dimensions
d D d1 D1 H rs (min)
mm
260 360 355 264 79 2.1
Výkonové parametry
Performance parameters
Cr Cor Pu MFO-pl. maz. MFO - olej
kN min-1
470.500 55.800 560 750
Hmotnost
Mass
- [ kg ]
25
Připojovací rozměry
Mounting Dimensions
da (min) Da (max) ra (max)
319 301 2
Minimum axial load factor 26

 

 

Calculations

vzorec C = kN  
P = kN  
L10 = 106ot
vzorec Fa
Fr
  n=
 
L10h = h
  D=
 
L10km = 106km
vzorec   a23=
  a1=
Lna = 106ot

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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