Name	54311U	54311U	54311U
Brand	NACHI	NSK	KOYO
Size (mm)	55x105x78(mm)	55x105x78(mm)	45x105x72.6(mm)
Bore Diameter (mm)	55(mm)	55(mm)	45(mm)
Outer Diameter (mm)	105(mm)	105(mm)	105(mm)
Width (mm)	78(mm)	78(mm)	72.6(mm)
d	55 mm 2.1654 in	55 mm 2.1654 in
d2	45 mm 1.7717 in	45 mm 1.7717 in	45 mm 1.7717 in
D	105 mm 4.1339 in	105 mm 4.1339 in	105 mm 4.1339 in
T	78 mm 3.0709 in	78 mm 3.0709 in	72.6 mm 2.8583 in
ra1 max.	0.6 mm 0.0236 in
T1	46.5 mm 1.8307 in		43.8 mm 1.7244 in
a	15 mm 0.5906 in
b	11.5 mm 0.4528 in	11,5 mm 0.4528 in
d3	105 mm 4.1339 in	105 mm 4.1339 in	105 mm 4.1339 in
r min.	1.1 mm 0.0433 in	1,1 mm 0.0433 in	1.1 mm 0.0433 in
r1 min.	0.6 mm 0.0236 in	0,6 mm 0.0236 in	0.6 mm 0.0236 in
D1	57 mm 2.2441 in	57 mm 2.2441 in	57 mm 2.2441 in
D2	80 mm 3.1496 in	80 mm 3.1496 in	80 mm 3.1496 in
D3	110 mm 4.3307 in	110 mm 4.3307 in	110 mm 4.3307 in
da min.	55 mm 2.1654 in		55 mm 2.1654 in
Da max.	80 mm 3.1496 in	80 mm 3.1496 in	80 mm 3.1496 in
ra max.	1 mm 0.0394 in	1 mm 0.0394 in	1 mm 0.0394 in
Weight	3.22 Kg	3,35 Kg	3.21 Kg
Basic dynamic load rating (C)	120 kN	115 kN	119 kN
Basic static load rating (C0)	246 kN	244 kN	246 kN
(Grease) Lubrication Speed	1600 r/min	1500 r/min	1600 r/min