Bearing number	6580/6535	6580/6535	6580/6535
Size (mm)	88.900x161.925x53.975(mm)	88.9x161.925x53.975(mm)	88.9x161.925x53.975(mm)
Brand	NACHI	Fersa	Timken
Bore Diameter (mm)	88.900(mm)	88,9(mm)	88,9(mm)
Outer Diameter (mm)	161.925(mm)	161,925(mm)	161,925(mm)
Width (mm)	53.975(mm)	53,975(mm)	53,975(mm)
d	88.900 mm 3.5 in	88,9 mm 3.5 in	88,9 mm 3.5 in
D	161.925 mm 6.375 in	161,925 mm 6.375 in	161,925 mm 6.375 in
T	53.975 mm 2.125 in		53,975 mm 2.125 in
B	55.100 mm 2.1693 in		55,1 mm 2.1693 in
C	42.862 mm 1.6875 in		42,862 mm 1.6875 in
a	13.1 mm 0.5157 in
r1 min.	3.5 mm 0.1378 in
r2 min.	3.3 mm 0.1299 in
Weight	4,75 Kg		4,67 Kg
Basic dynamic load rating (C)	305000 kN
Basic static load rating (C0)	460000 kN		523 kN
(Grease) Lubrication Speed	2200 r/min
(Oil) Lubrication Speed	3000 r/min
Calculation factor (e)	0.40		0,4
Calculation factor (Y0)	0.82