HR323/28C is a NSK tapered roller bearing, bore 28 mm, O.D. 68 mm, width 24 mm, dynamic rating 14,400 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 131
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
28
1.1024
D
Outside diameter
68
2.6772
B
Inner-ring / bearing width
24
0.9449
T
Overall assembly width
25.75
1.0138
C
Cup / outer-ring width
19
0.748
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)
28
Bore d (in)
1.1024
Outside dia. D (mm)
68
Outside dia. D (in)
2.6772
Width B (mm)
24
Width B (in)
0.9449
Overall width T (mm)
25.75
Overall width T (in)
1.0138
Cup width C (mm)
19
Cup width C (in)
0.7480
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
14400
Basic static load rating Cor (lbs)
15600
Limiting speed - grease (rpm)
5,600
Limiting speed - oil (rpm)
7,500
Weight
Weight (kg)
0.445
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.059
Shaft shoulder da min (in)
1.615
Housing shoulder Da max (in)
2.325
Shaft shoulder db max (in)
1.379
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,800 rpm
4
16,014
102
941
6
10,676
392
3,634
8
8,007
1,024
9,481
10
6,405
2,154
19,948
15
4,270
8,323
77,069
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 64,054 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.133 (dimensions) / p.134 (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.
