SKF S7210 ACD/P4A Angular Contact Ball Bearing

Details

Technical specification

DIMENSIONS

d		50 mm
D		90 mm
B		20 mm
d1		62.3 mm
d2		62.3 mm
D2		80.7 mm
r1,2		min. 1.1 mm
r3,4		min. 0.6 mm
a		26.4 mm

ABUTMENT DIMENSIONS

da		min. 57 mm
da		max. 61.5 mm
db		min. 57 mm
db		max. 61.5 mm
Da		max. 83 mm
Db		max. 85.8 mm
ra		max. 1 mm
rb		max. 0.6 mm

CALCULATION DATA

Basic dynamic load rating	C	42.3 kN
Basic static load rating	C0	32.5 kN
Fatigue load limit	Pu	1.37 kN
Attainable speed for grease lubrication		14000 r/min
Contact angle	?	25 °
Ball diameter	Dw	12.7 mm
Number of balls	z	15

PRELOAD AND STIFFNESS (BACK-TO-BACK, FACE-TO-FACE)

Preload class A	GA	265 N
Static axial stiffness, preload class A		154 N/µm
Preload class B	GB	530 N
Static axial stiffness, preload class B		201 N/µm
Preload class C	GC	1060 N
Static axial stiffness, preload class C		266 N/µm
Preload class D	GD	2120 N
Static axial stiffness, preload class D		359 N/µm

CALCULATION FACTORS

Calculation factor	f	1.08
Calculation factor	f1	0.99
Calculation factor	f2A	1
Calculation factor	f2B	1.01
Calculation factor	f2C	1.02
Calculation factor	f2D	1.05
Calculation factor	fHC	1
Calculation factor	e	0.68
Calculation factor (single, tandem)	Y2	0.87
Calculation factor (single, tandem)	Y0	0.38
Calculation factor (single, tandem)	X2	0.41
Calculation factor (back-to-back, face-to-face)	Y1	0.92
Calculation factor (back-to-back, face-to-face)	Y2	1.41
Calculation factor (back-to-back, face-to-face)	Y0	0.76
Calculation factor (back-to-back, face-to-face)	X2	0.67

MASS

Mass bearing		0.47 kg