Schaeffler Product catalogue - medias
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ZKLN2557-2RS-XL


Axial angular contact ball bearings

double direction, lip seals on both sides

  
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Radial loadAxial load in one directionAxial load in two directionsSealed on both sidesLifetime lubrication, freedom from maintenanceGrease lubrication
Design of housing and shaft (threaded spindle)
Design of housing and shaft (threaded spindle)
(4) Only valid in assembled condition
 
d 25  mm  Tolerance: 0/-0,005
D 57  mm  Tolerance: 0/-0,010
B 28  mm  Tolerance: 0/-0,25
  60  °  Contact angle
Da max 48  mm   
d1 40,5  mm   
da min 32  mm   
r1 min 0,6  mm   
rmin 0,3  mm   
m 0,34  kg  ≈ Mass
Ca 30500  N  Basic dynamic load rating, axial
C0a 55000  N  Basic static load rating, axial
Cua 3350  N  Fatigue limit load, axial
nG Fett 5700  1/min  Limiting speed for grease lubrication
nϑ 2600  1/min  Thermally safe operating speed
MRL 0,4  Nm  Bearing frictional torque
caL 750  N/µm  Axial rigidity
ckL 200  Nm/mrad  Tilting rigidity
Mm 0,486  kg * cm^2  Mass moment of inertia for rotating inner ring
  2  µm  Axial runout
The axial runout data for screw drive bearing arrangements are based on the rotating inner ring.
  ZM25  Recommended INA precision locknuts with radial clamping

The recommended INA precision locknuts are not included in the scope of delivery and must be ordered separately.
  AM25  Recommended INA precision locknuts with axial clamping

The recommended INA precision locknuts are not included in the scope of delivery and must be ordered separately.
MA 25  Nm  Tightening torque

Only valid in conjunction with INA precision locknuts.
Observe the guidelines on locating/locating bearing arrangements.
  9123  N  Requisite locknut force, axial

The requisite axial locknut force must be observed when using other locknuts.
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