230 is a NSK cylindrical roller bearing, bore 150 mm, O.D. 270 mm, width 45 mm, dynamic rating 77,000 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 53
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
150
5.9055
D
Outside diameter
270
10.6299
B
Inner-ring / bearing width
45
1.7717
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)
150
Bore d (in)
5.9055
Outside dia. D (mm)
270
Outside dia. D (in)
10.6299
Width B (mm)
45
Width B (in)
1.7717
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
77000
Basic static load rating Cor (lbs)
97900
Limiting speed - grease (rpm)
2,200
Limiting speed - oil (rpm)
2,800
Weight
Weight (kg)
11.34
Mounting dimensions (fillets / shoulders)
Fillet ra max (in)
0.099
Fillet rb max (in)
0.098
Shaft shoulder da min (in)
6.457
Housing shoulder Da max (in)
10.118
Shaft shoulder db min (in)
6.417
Shaft shoulder db max (in)
6.969
Housing shoulder Db min (in)
9.528
Housing shoulder Db max (in)
10.118
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 700 rpm
4
85,628
102
2,419
6
57,086
392
9,345
8
42,814
1,024
24,381
10
34,251
2,154
51,296
15
22,834
8,323
198,178
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 342,513 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.55 (dimensions) / p.56 (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.
