HR31313J is a NSK tapered roller bearing, bore 65 mm, O.D. 140 mm, width 33 mm, dynamic rating 38,900 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 109
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
65
2.5591
D
Outside diameter
140
5.5118
B
Inner-ring / bearing width
33
1.2992
T
Overall assembly width
36
1.4173
C
Cup / outer-ring width
23
0.9055
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)
65
Bore d (in)
2.5591
Outside dia. D (mm)
140
Outside dia. D (in)
5.5118
Width B (mm)
33
Width B (in)
1.2992
Overall width T (mm)
36
Overall width T (in)
1.4173
Cup width C (mm)
23
Cup width C (in)
0.9055
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
38900
Basic static load rating Cor (lbs)
46100
Limiting speed - grease (rpm)
2,750
Limiting speed - oil (rpm)
3,730
Weight
Weight (kg)
2.431
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.08
Shaft shoulder da min (in)
3.150
Housing shoulder Da max (in)
5.039
Shaft shoulder db max (in)
3.157
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 900 rpm
4
43,259
102
1,881
6
28,839
392
7,268
8
21,629
1,024
18,963
10
17,304
2,154
39,897
15
11,536
8,323
154,138
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 173,036 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.111 (dimensions) / p.112 (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.
