Original catalogue drawing - NSK catalogue, page 117
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
320
12.5984
D
Outside diameter
440
17.3228
B
Inner-ring / bearing width
72
2.8346
T
Overall assembly width
76
2.9921
C
Cup / outer-ring width
63
2.4803
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)
320
Bore d (in)
12.5984
Outside dia. D (mm)
440
Outside dia. D (in)
17.3228
Width B (mm)
72.0000
Width B (in)
2.8346
Overall width T (mm)
76
Overall width T (in)
2.9921
Cup width C (mm)
63
Cup width C (in)
2.4803
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
202000
Basic static load rating Cor (lbs)
423000
Limiting speed - grease (rpm)
700
Limiting speed - oil (rpm)
900
Weight
Weight (kg)
32.005
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.10
Shaft shoulder da min (in)
13.940
Housing shoulder Da max (in)
16.220
Shaft shoulder db max (in)
13.190
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 200 rpm
4
224,635
102
8,466
6
149,757
392
32,708
8
112,318
1,024
85,333
10
89,854
2,154
179,536
15
59,903
8,323
693,622
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 898,541 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.119 (dimensions) / p.120 (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.
