420 is a NSK cylindrical roller bearing, bore 100 mm, O.D. 250 mm, width 58 mm, dynamic rating 100,000 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 57
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
100
3.937
D
Outside diameter
250
9.8425
B
Inner-ring / bearing width
58
2.2835
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)
100
Bore d (in)
3.9370
Outside dia. D (mm)
250
Outside dia. D (in)
9.8425
Width B (mm)
58
Width B (in)
2.2835
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
100000
Basic static load rating Cor (lbs)
112000
Limiting speed - grease (rpm)
2,600
Limiting speed - oil (rpm)
3,000
Weight
Weight (kg)
15.422
Mounting dimensions (fillets / shoulders)
Fillet ra max (in)
0.118
Fillet rb max (in)
0.118
Shaft shoulder da min (in)
4.567
Housing shoulder Da max (in)
9.213
Shaft shoulder db min (in)
4.567
Shaft shoulder db max (in)
5.315
Housing shoulder Db min (in)
8.465
Housing shoulder Db max (in)
9.213
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 800 rpm
4
111,206
102
2,117
6
74,137
392
8,177
8
55,603
1,024
21,333
10
44,482
2,154
44,884
15
29,655
8,323
173,406
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 444,822 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.59 (dimensions) / p.60 (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.
