1028 is a NSK cylindrical roller bearing, bore 140 mm, O.D. 210 mm, width 33 mm, dynamic rating 39,400 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 59
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
210
8.2677
B
Inner-ring / bearing width
33
1.2992
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)
140
Bore d (in)
5.5118
Outside dia. D (mm)
210
Outside dia. D (in)
8.2677
Width B (mm)
33
Width B (in)
1.2992
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
39400
Basic static load rating Cor (lbs)
56100
Limiting speed - grease (rpm)
3,000
Limiting speed - oil (rpm)
3,600
Weight
Weight (kg)
3.842
Mounting dimensions (fillets / shoulders)
Fillet ra max (in)
0.079
Fillet rb max (in)
0.039
Shaft shoulder da min (in)
5.866
Housing shoulder Da max (in)
7.913
Shaft shoulder db min (in)
5.768
Shaft shoulder db max (in)
6.142
Housing shoulder Db min (in)
7.638
Housing shoulder Db max (in)
8.012
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,000 rpm
4
43,815
102
1,693
6
29,210
392
6,542
8
21,907
1,024
17,067
10
17,526
2,154
35,907
15
11,684
8,323
138,724
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 175,260 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.61 (dimensions) / p.62 (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.
