HR30211J is a NSK tapered roller bearing, bore 55 mm, O.D. 100 mm, width 21 mm, dynamic rating 21,200 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
55
2.1654
D
Outside diameter
100
3.937
B
Inner-ring / bearing width
21
0.8268
T
Overall assembly width
22.75
0.8957
C
Cup / outer-ring width
18
0.7087
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)
55
Bore d (in)
2.1654
Outside dia. D (mm)
100
Outside dia. D (in)
3.9370
Width B (mm)
21
Width B (in)
0.8268
Overall width T (mm)
22.75
Overall width T (in)
0.8957
Cup width C (mm)
18
Cup width C (in)
0.7087
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
21200
Basic static load rating Cor (lbs)
25400
Limiting speed - grease (rpm)
3,600
Limiting speed - oil (rpm)
5,000
Weight
Weight (kg)
0.735
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.06
Shaft shoulder da min (in)
2.638
Housing shoulder Da max (in)
3.583
Shaft shoulder db max (in)
2.520
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,200 rpm
4
23,576
102
1,411
6
15,717
392
5,451
8
11,788
1,024
14,222
10
9,430
2,154
29,923
15
6,287
8,323
115,604
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 94,302 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.
