{"product":{"productId":"agid.22108","price":317.03,"name":"AXIAL ANGULAR CONTACT BALL, DOUBLE-ROW,2557-2RS, D=25-0,005, D1=57-0,01, STEELGROUND, COMP:NITRILE RUBBER"},"currency":"CHF"}
Axial Angular Contact Ball Bearing
double-row
steel
ground
- Support of high radial and axial loads
- High axial load rating due to the 60° pressure angle
- High rigidity
Sales unit
317,03 CHF
plus sales tax
Added to your shopping cart
Item
Axial Angular Contact Ball Bearing
Version 1
double-row
Main
material
steel
Component
material
nitrile rubber
Surface finish
body
ground
B=Width
28 -0,25
D1=Outside diameter
57-0,01
D=internal diameter
25-0,005
KZZ.=Abbreviation
2557-2RS
Axial
rigidity
N/μm
750
Bearing friction torque
Nm
0,40
Circular runout
μm
2,0
D2
40
Dynamic
load rating
N
27500
Hole
tolerance
μm
0-5
Moment of
inertia
kg.cm²
0,486
OD
tolerance
μm
0-10
R min.
0,3
R1 min.
0,6
Radial
bearing clearance
pre-tensioned
RoHS
true
Speed limit
rpm
2600
Static
load rating
N
55000
Tightening torque,
precision locknut
Nm
25
Tilt rigidity
Nm/mrad
200
Width
tolerance
μm
0-250
α
60°
Description
Material
Steel housing.
Nitrile rubber seal.
Nitrile rubber seal.
Version
Ground edges.
Note
Preloaded high-accuracy bearings with a 60° thrust angle. The bearings accept both radial and axial forces from both directions. Due to their preload, the angular contact ball bearings provide a high level of stiffness, excellent concentricity, precise tool positioning and repeatability.
The integrated low-friction seal effectively keeps dirt away from the bearing, thereby ensuring excellent operating safety and a long service life.
The bearing friction coefficient Mrl is a reference value.
The moment of inertia corresponds to that of the rotating inner ring.
The limiting speeds are applicable after grease is applied.
The integrated low-friction seal effectively keeps dirt away from the bearing, thereby ensuring excellent operating safety and a long service life.
The bearing friction coefficient Mrl is a reference value.
The moment of inertia corresponds to that of the rotating inner ring.
The limiting speeds are applicable after grease is applied.
Technical Data
All bearings are supplied ready for mounting with lubricating grease type KE2P-35 acc. to DIN 51825.
Housing and shaft tolerances correspond to roundness tolerance class IT2 and perpendicularity tolerance class IT4.
Housing and shaft tolerances correspond to roundness tolerance class IT2 and perpendicularity tolerance class IT4.
Application
For thread drive bearing.
Temperature range
-30 °C to +120 °C.
Assembly
Precision slotted nuts must be used for mounting the threaded spindles.
To compensate for any material settling during assembly, tighten the slotted nuts using 2x tightening torque, loosen slightly and then tighten using the prescribed tightening torque.
To compensate for any material settling during assembly, tighten the slotted nuts using 2x tightening torque, loosen slightly and then tighten using the prescribed tightening torque.
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