HR30228J is a NSK tapered roller bearing, bore 140 mm, O.D. 250 mm, width 42 mm, dynamic rating 87,700 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 105
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
140
5.5118
D
Outside diameter
250
9.8425
B
Inner-ring / bearing width
42
1.6535
T
Overall assembly width
45.75
1.8012
C
Cup / outer-ring width
36
1.4173
Notes
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)
140
Bore d (in)
5.5118
Outside dia. D (mm)
250
Outside dia. D (in)
9.8425
Width B (mm)
42
Width B (in)
1.6535
Overall width T (mm)
45.75
Overall width T (in)
1.8012
Cup width C (mm)
36
Cup width C (in)
1.4173
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
87700
Basic static load rating Cor (lbs)
116000
Limiting speed - grease (rpm)
1,400
Limiting speed - oil (rpm)
1,900
Weight
Weight (kg)
8.741
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.10
Shaft shoulder da min (in)
6.339
Housing shoulder Da max (in)
9.291
Shaft shoulder db max (in)
6.457
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 400 rpm
4
97,527
102
4,233
6
65,018
392
16,354
8
48,764
1,024
42,667
10
39,011
2,154
89,768
15
26,007
8,323
346,811
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 390,109 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.107 (dimensions) / p.108 (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.
