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
140
5.5118
D
Outside diameter
250
9.8425
B
Inner-ring / bearing width
42
1.6535
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)
140
Bore d (in)
5.5118
Outside dia. D (mm)
250
Outside dia. D (in)
9.8425
Width B (mm)
42
Width B (in)
1.6535
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
53600
Basic static load rating Cor (lbs)
57100
Limiting speed - grease (rpm)
5,900
Limiting speed - oil (rpm)
9,000
Weight
Weight (kg)
7.843
Mounting dimensions (fillets / shoulders)
Fillet ra (in)
0.098
Fillet rb (in)
0.039
Shaft shoulder da (in)
6.063
Housing shoulder Da (in)
9.291
Housing shoulder Db (in)
9.567
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,900 rpm
4
59,606
64
561
6
39,737
216
1,895
8
29,803
512
4,491
10
23,842
1,000
8,772
15
15,895
3,375
29,605
Basic rating life per ISO 281: L10 = (C/P)3 with C = 238,425 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.
