HR31312J is a NSK tapered roller bearing, bore 60 mm, O.D. 130 mm, width 31 mm, dynamic rating 33,900 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
60
2.3622
D
Outside diameter
130
5.1181
B
Inner-ring / bearing width
31
1.2205
T
Overall assembly width
33.5
1.3189
C
Cup / outer-ring width
22
0.8661
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)
60
Bore d (in)
2.3622
Outside dia. D (mm)
130
Outside dia. D (in)
5.1181
Width B (mm)
31
Width B (in)
1.2205
Overall width T (mm)
33.5
Overall width T (in)
1.3189
Cup width C (mm)
22
Cup width C (in)
0.8661
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
33900
Basic static load rating Cor (lbs)
39800
Limiting speed - grease (rpm)
2,970
Limiting speed - oil (rpm)
4,030
Weight
Weight (kg)
1.982
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.08
Shaft shoulder da min (in)
2.953
Housing shoulder Da max (in)
4.646
Shaft shoulder db max (in)
2.929
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 900 rpm
4
37,699
102
1,881
6
25,132
392
7,268
8
18,849
1,024
18,963
10
15,079
2,154
39,897
15
10,053
8,323
154,138
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 150,795 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.
