Bearing number	7309	7309	7309
Size (mm)	45x100x25(mm)	45x100x25(mm)	45x100x25(mm)
Brand	NTN	KOYO	CYSD
Bore Diameter (mm)	45(mm)	45(mm)	45(mm)
Outer Diameter (mm)	100(mm)	100(mm)	100(mm)
Width (mm)	25(mm)	25(mm)	25(mm)
d	45 mm 1.7717 in	45 mm 1.7717 in	45 mm 1.7717 in
D	100 mm 3.937 in	100 mm 3.937 in	100 mm 3.937 in
B	25 mm 0.9843 in	25 mm 0.9843 in	25 mm 0.9843 in
C	25 mm 0.9843 in	25 mm 0.9843 in	25 mm 0.9843 in
Angle (α)	25 °	30 °	25 °
a	33,5 mm 1.3189 in	33.6 mm 1.3228 in
r min.	1,5 mm 0.0591 in	1.5 mm 0.0591 in	1,5 mm 0.0591 in
r1 min.	1 mm 0.0394 in	1 mm 0.0394 in
da min.	53,5 mm 2.1063 in	53.5 mm 2.1063 in
db min	50,5 mm 1.9882 in
ra max.	1,5 mm 0.0591 in	1.5 mm 0.0591 in
Weight	0,837 Kg	0.875 Kg
Basic dynamic load rating (C)	63,5 kN		63,5 kN
Basic static load rating (C0)	44 kN		43,5 kN
(Grease) Lubrication Speed	7 800 r/min	8200 r/min	7800 r/min