Dimensions
d(mm)50Bore diameter
D(mm)72Outer diameter
W(mm)12Width
a(mm)20Span
rs min(mm)0.6Minimal edge distance
High-speed hybrid spindle bearing, adjusted, in pairs or sets, contact angle 25°, one grease/ lubrication groove with two grease/ lubrication bores, two circular grooves with O rings, cage made of laminated fabric, diminished tolerances, rings and rolling elements made of high-quality roller bearing steel
Technical data
*) the unit "B" in the graphics corresponds in English to the unit "W" for "Width".
Contact angle
α(°)25Contact angle
DLR dimension
NB(mm)1.5Groove width
NA(mm)2.8Groove distance
SB(mm)1.6Width of oil groove
SA(mm)6.6Distance of oil groove
Connecting dimensions
da h12(mm)55Diameter of shaft shoulder
Da H12(mm)67.5Diameter of housing shoulder
ra max(mm)0.6Maximal rounding radius
Performance data
Cr(kN)9.7Dynamic load rating, radial
C0r(kN)5.6Static load rating, radial
Cur(kN)0.223Fatigue limit load, radial
nG Oil(min-1)48000Limit speed, oil lubrication
FV L(N)39Preload force, slight
FV M(N)117Preload force, medium
FV S(N)234Preload force, heavy
ca L(N/µm)81.7Axial rigidity, slight
ca M(N/µm)120Axial rigidity, medium
ca S(N/µm)156Axial rigidity, heavy
KaE L(N)113Lift-off force, slight
KaE M(N)344Lift-off force, medium
KaE S(N)702Lift-off force, heavy
Mass
kg0.142Mass