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Designation
Axial Angular Contact Ball Bearing
Form
C
Version 1
double-row
Version 2
with flange
Body material
steel
Component material
nitrile rubber
Body surface finish
ground
B=Width
28 -0,25
D1=Outside diameter
68-0,01
D=Internal diameter
20-0,005
KZZ.=Abbreviation
2068-2RS
T1=Dynamic load ratings N
26000
T2=Static load ratings N
47000
U=Speed limit rpm
3000
Axial rigidity n/µm
650
Axial runout µm
2,0
B1
3
B2
19
Bearing friction torque Nm
0,30
Bore deviation µm
0-5
D2
34,5
D3
44
D4
6,6
D5
53
Form definition
176
M
M06
Moment of inertia KGxcm²
0,273
Outside diameter deviation µm
0-10
R
0,3
R1
0,6
Radial bearing clearance
pre-tensioned
Tightening torque prec. locknu
18
Tilt rigidity Nm/mrad
140
Width deviation µm
0-250
α
60°
β
45°

Description

Material
Steel housing.
Nitrile rubber seal.
Version
Ground edges.
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.
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.

Tighten fastening screws crosswise up to max. 70% of the yield point.
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