2318 is a NSK cylindrical roller bearing, bore 90 mm, O.D. 190 mm, width 64 mm, dynamic rating 73,700 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 63
Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.
Scale cross-section
Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own
dimensions for selection reference only - not a manufacturing or assembly drawing.
Dimension table (mm / inch)
Symbol
Dimension
mm
inch
d
Bore diameter
90
3.5433
D
Outside diameter
190
7.4803
B
Inner-ring / bearing width
64
2.5197
Notes
Cylindrical roller entries from the NSK inch catalogue are series numbers covering the N / NU / NJ / NUP / NH prefixes of the same size. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.
Main dimensions
Bore d (mm)
90
Bore d (in)
3.5433
Outside dia. D (mm)
190
Outside dia. D (in)
7.4803
Width B (mm)
64
Width B (in)
2.5197
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
73700
Basic static load rating Cor (lbs)
88000
Limiting speed - grease (rpm)
2,800
Limiting speed - oil (rpm)
3,600
Weight
Weight (kg)
8.165
Mounting dimensions (fillets / shoulders)
Fillet ra max (in)
0.098
Fillet rb max (in)
0.098
Shaft shoulder da min (in)
4.055
Housing shoulder Da max (in)
6.969
Shaft shoulder db min (in)
4.055
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 900 rpm
4
81,958
102
1,881
6
54,639
392
7,268
8
40,979
1,024
18,963
10
32,783
2,154
39,897
15
21,856
8,323
154,138
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 327,834 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.
Source & traceability
Brand
NSK
Source catalogue
NSK inch product catalogue
Catalogue page
p.65 (dimensions) / p.66 (ratings)
Dimensions in inches and millimetres, load ratings in lbs.
Send us the quantity you need and we will come back with price and
lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.
