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

Single direction thrust ball bearings

51248M

335
240
min. 2.1
78
min. 2.1
244
340

299
2
2
281



Správné označení: 51248M

Radiální vůle: C
Přesnost: P
Stabilizace: S




Typ
Type
51248M
Konstrukce
Design
Single direction thrust ball bearings
Hlavní rozměry
Dimensions
d D d1 D1 H rs (min)
mm
240 340 335 244 78 2.1
Výkonové parametry
Performance parameters
Cr Cor Pu MFO-pl. maz. MFO - olej
kN min-1
460.800 53.400 600 800
Hmotnost
Mass
- [ kg ]
23
Připojovací rozměry
Mounting Dimensions
da (min) Da (max) ra (max)
299 281 2
Minimum axial load factor 23

 

 

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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