Original catalogue drawing - NSK catalogue, page 197
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)
50900
Basic static load rating Cor (lbs)
54500
Limiting speed - grease (rpm)
4,000
Limiting speed - oil (rpm)
5,600
Weight
Weight (kg)
7.911
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 1,300 rpm
4
56,604
64
821
6
37,736
216
2,769
8
28,302
512
6,564
10
22,641
1,000
12,821
15
15,094
3,375
43,269
Basic rating life per ISO 281: L10 = (C/P)3 with C = 226,414 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.199 (dimensions) / p.200 (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.
