2304SK NTN Self Aligning Ball Bearings

2304SK NTN Self Aligning Ball Bearings

Name	2304SK	23040E	23044EK
Brand	NTN	NACHI	NACHI
Size (mm)	20x52x21(mm)	200x310x82(mm)	220x340x90(mm)
Bore Diameter (mm)	20(mm)	200(mm)	220(mm)
Outer Diameter (mm)	52(mm)	310(mm)	340(mm)
Width (mm)	21(mm)	82(mm)	90(mm)
d	20 mm 0.7874 in	200 mm 7.874 in	220 mm 8.6614 in
D	52 mm 2.0472 in	310 mm 12.2047 in	340 mm 13.3858 in
B	21 mm 0.8268 in	82 mm 3.2283 in	90 mm 3.5433 in
C	21 mm 0.8268 in	82 mm 3.2283 in	90 mm 3.5433 in
r min.	1,1 mm 0.0433 in	2,1 mm 0.0827 in	3 mm 0.1181 in
da min.	26,5 mm 1.0433 in
Da max.	45,5 mm 1.7913 in
ra max.	1 mm 0.0394 in
Weight	0,193 Kg	23,4 Kg	30,7 Kg
Basic dynamic load rating (C)	18,5 kN	1270 kN	1470 kN
Basic static load rating (C0)	4,7 kN	1560 kN	1880 kN
(Grease) Lubrication Speed	11 000 r/min	1400 r/min	1200 r/min
(Oil) Lubrication Speed	14 000 r/min	1900 r/min	1600 r/min
Calculation factor (e)	0,5	0,26	0,26
Calculation factor (Y0)	1,3	2,58	2,58
Calculation factor (Y1)	1,2	2,64	2,64

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