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°, 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
Connecting dimensions
da h12(mm)55Diameter of shaft shoulder
Da H12(mm)67.5Diameter of housing shoulder
ra max(mm)0.6Maximal rounding radius
Etk(mm)59.2Injection pitch circle
Etk1(mm)58.4Injection pitch circle
Performance data
Cr(kN)9.7Dynamic load rating, radial
C0r(kN)6.1Static load rating, radial
Cur(kN)0.309Fatigue limit load, radial
nG Grease(min-1)24000Limit speed, grease lubrication
nG Oil(min-1)36000Limit speed, oil lubrication
FV L(N)58Preload force, slight
FV M(N)174Preload force, medium
FV S(N)348Preload force, heavy
ca L(N/µm)82Axial rigidity, slight
ca M(N/µm)122Axial rigidity, medium
ca S(N/µm)160Axial rigidity, heavy
KaE L(N)167Lift-off force, slight
KaE M(N)507Lift-off force, medium
KaE S(N)1033Lift-off force, heavy
Mass
kg0.15Mass