SKF S7008 FW/HC Angular contact ball bearings, super-precision

SKF S7008 FW/HC Angular contact ball bearings, super-precision
Angular contact ball bearings, super-precision

Tolerances: P4A, P4, PA9A, P2, Chamfer dimensionsRecommended shaft and housing fits: shafts, housingsValues for ISO tolerance classes: shafts, housingsSpeed dependent initial grease fill →Initial grease fillClamping and fitting forces: D design, E design, B design

Designation suffixes H, H1, L and L1identify variants for direct oil-air lubrication(→Variants).

d		40	mm
D		68	mm
B		15	mm
d1		49.7	mm
d2		47.6	mm
D2		60.85	mm
r1,2	min.	1	mm
r3,4	min.	0.6	mm
a		16.3	mm

Abutment dimensions

da	min.	44.6	mm
da	max.	49.1	mm
db	min.	44.6	mm
db	max.	47	mm
Da	max.	63.4	mm
Db	max.	63.8	mm
ra	max.	1	mm
rb	max.	0.6	mm

Calculation data

Basic dynamic load rating	C		12.1	kN
Basic static load rating	C0		7.5	kN
Fatigue load limit	Pu		0.315	kN
Attainable speed for grease lubrication			31000	r/min
Ball diameter	Dw		7.144	mm
Number of balls	z		19
Calculation factors
Calculation factor	e		0.57
Calculation factor (single, tandem)	Y2		1
Calculation factor (single, tandem)	Y0		0.42
Calculation factor (single, tandem)	X2		0.43
Calculation factor (back-to-back, face-to-face)	Y1		1.09
Calculation factor (back-to-back, face-to-face)	Y2		1.63
Calculation factor (back-to-back, face-to-face)	Y0		0.84
Calculation factor (back-to-back, face-to-face)	X2		0.7

Mass

Mass bearing

0.17

kg

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