Original catalogue drawing - NSK catalogue, page 57
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
70
2.7559
D
Outside diameter
180
7.0866
B
Inner-ring / bearing width
42
1.6535
Notes
Cylindrical roller entries from the NSK inch catalogue are series numbers covering the N / NU / NJ / NUP / NH prefixes of the same size. 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)
70
Bore d (in)
2.7559
Outside dia. D (mm)
180
Outside dia. D (in)
7.0866
Width B (mm)
42
Width B (in)
1.6535
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
51000
Basic static load rating Cor (lbs)
52800
Limiting speed - grease (rpm)
3,600
Limiting speed - oil (rpm)
4,300
Weight
Weight (kg)
5.443
Mounting dimensions (fillets / shoulders)
Fillet ra max (in)
0.098
Fillet rb max (in)
0.098
Shaft shoulder da min (in)
3.268
Housing shoulder Da max (in)
6.575
Shaft shoulder db min (in)
3.268
Shaft shoulder db max (in)
3.819
Housing shoulder Db min (in)
6.102
Housing shoulder Db max (in)
6.575
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,200 rpm
4
56,715
102
1,411
6
37,810
392
5,451
8
28,357
1,024
14,222
10
22,686
2,154
29,923
15
15,124
8,323
115,604
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 226,859 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.59 (dimensions) / p.60 (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.
