Loads

Needle roller / angular contact ball bearings

Needle roller bearing
Angular contact ball bearing
Minimum load

For additional
information
(→ Requisite minimum load)
Frm = 0,02 C
Perform calculationPerform calculation
The weight of the components supported by the bearing, together with external forces, generally exceed the requisite minimum load. If this is not the case, the bearing must be subjected to an additional radial and/or axial load.
Equivalent dynamic bearing load

For additional
information
(→ Equivalent dynamic bearing load)

P = Fr




Perform calculation

P = Fa


Fa must not exceed 0,25 Fr.


Perform calculation

Equivalent static bearing load

For additional
information
(→ Equivalent static bearing load)

P0 = Fr




Perform calculation

P0 = Fa


Fa must not exceed 0,25 Fr.


Perform calculation


Symbols
C=basic dynamic radial load rating [kN] (→ product table)
C0=basic static load axial rating [kN] (→ product table)
dm
=
bearing mean diameter [mm]
= 0,5 (d + D)
Fa=
axial load [kN]
Fr=radial load [kN]
Fam
=
minimum axial load [kN]
Frm=minimum radial load [kN]
n
=
rotational speed [r/min]
P=equivalent dynamic bearing load [kN]
P0=equivalent static bearing load [kN]
Needle roller / thrust ball bearings

Needle roller bearing
Thrust ball bearing
Minimum load

For additional
information
(→ Requisite minimum load)
Frm = 0,02 C
Perform calculationPerform calculation
The weight of the components supported by the bearing, together with external forces, generally exceed the requisite minimum load. If this is not the case, the bearing must be subjected to an additional radial and/or axial load.
Equivalent dynamic bearing load

For additional
information
(→ Equivalent dynamic bearing load)

P = Fr


Perform calculation

P = Fa


Perform calculation

Equivalent static bearing load

For additional
information
(→ Equivalent static bearing load)

P0 = Fr


Perform calculation

P0 = Fa


Perform calculation


Symbols
A=minimum load factor (→ product table)
C=basic dynamic radial load rating [kN] (→ product table)
Fa=
axial load [kN]
Fr=radial load [kN]
Fam
=
minimum axial load [kN]
Frm=minimum radial load [kN]
n
=
rotational speed [r/min]
P=equivalent dynamic bearing load [kN]
P0=equivalent static bearing load [kN]
Needle roller / cylindrical roller thrust bearings

Needle roller bearing
Cylindrical roller thrust bearing
Minimum load

For additional
information
(→ Requisite minimum load)
Frm = 0,02 CFam = 0,0005 C0 + A
Perform calculationPerform calculation
The weight of the components supported by the bearing, together with external forces, generally exceed the requisite minimum load. If this is not the case, the bearing must be subjected to an additional radial and/or axial load.
Equivalent dynamic bearing load

For additional
information
(→ Equivalent dynamic bearing load)

P = Fr


Perform calculation

P = Fa


Perform calculation

Equivalent static bearing load

For additional
information
(→ Equivalent static bearing load)

P0 = Fr


Perform calculation

P0 = Fa


Perform calculation


Symbols
A=minimum load factor (→ product table)
C=basic dynamic radial load rating [kN] (→ product table)
C0=basic dynamic axial load rating [kN] (→ product table)
Fa=axial load [kN]
Fr=radial load [kN]
Fam=minimum axial load [kN]
Frm=minimum radial load [kN]
n=rotational speed [r/min]
P=equivalent dynamic bearing load [kN]
P0=equivalent static bearing load [kN]
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