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
170
6.6929
D
Outside diameter
310
12.2047
B
Inner-ring / bearing width
52
2.0472
T
Overall assembly width
57
2.2441
C
Cup / outer-ring width
43
1.6929
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)
170
Bore d (in)
6.6929
Outside dia. D (mm)
310
Outside dia. D (in)
12.2047
Width B (mm)
52
Width B (in)
2.0472
Overall width T (mm)
57
Overall width T (in)
2.2441
Cup width C (mm)
43
Cup width C (in)
1.6929
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
118000
Basic static load rating Cor (lbs)
155000
Limiting speed - grease (rpm)
1,100
Limiting speed - oil (rpm)
1,500
Weight
Weight (kg)
16.103
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.12
Shaft shoulder da min (in)
7.756
Housing shoulder Da max (in)
11.496
Shaft shoulder db max (in)
7.992
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 300 rpm
4
131,223
102
5,644
6
87,482
392
21,805
8
65,611
1,024
56,889
10
52,489
2,154
119,691
15
34,993
8,323
462,415
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 524,890 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.
