Original catalogue drawing - NSK catalogue, page 195
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
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
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
71700
Basic static load rating Cor (lbs)
87100
Limiting speed - grease (rpm)
4,800
Limiting speed - oil (rpm)
7,300
Weight
Weight (kg)
17.404
Mounting dimensions (fillets / shoulders)
Fillet ra (in)
0.118
Fillet rb (in)
0.059
Shaft shoulder da (in)
7.402
Housing shoulder Da (in)
11.496
Housing shoulder Db (in)
11.850
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,600 rpm
4
79,734
64
667
6
53,156
216
2,250
8
39,867
512
5,333
10
31,894
1,000
10,417
15
21,262
3,375
35,156
Basic rating life per ISO 281: L10 = (C/P)3 with C = 318,937 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.197 (dimensions) / p.198 (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.
