SKF BSA 307 C Angular contact thrust ball bearings for screw drives, single direction, super-precision

SKF BSA 307 C Angular contact thrust ball bearings for screw drives, single direction, super-precision
Angular contact thrust ball bearings for screw drives, single direction, super-precision

Tolerances: table, Chamfer dimensionsBearing preloadDesign considerations: shafts, housingsSpeed dependent initial grease fill → Initial grease fill

d		35	mm
D		80	mm
H		21	mm
d1		50.18	mm
d2		58.5	mm
D1		58.6	mm
D2		68.51	mm
r1,2	min.	1	mm
a		66	mm

Abutment dimensions

da	min.	47	mm
db	min.	47	mm
Da	max.	72.5	mm
Db	max.	72.5	mm
ra	max.	1	mm

Calculation data

Basic dynamic load rating	C		57	kN
Basic static load rating	C0		146	kN
Fatigue load limit	Pu		5.4	kN
Attainable speed for grease lubrication			6700	r/min
Attainable speed for oil-air lubrication			9500	r/min
Preload class A			4100	N
Preload class B			8200	N
Frictional moment, preload class A			0.26	N·m
Frictional moment, preload class B			0.46	N·m
Static axial stiffnes, preload A			1120	N/µm
Static axial stiffnes, preload B			1430	N/µm
Maximum axial load carrying capacity	Fa	max.	65	kN
Reference grease quantity	Gref		4.2	cm³

Mass

Mass bearing

0.56

kg

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