HR30312J is a NSK tapered roller bearing, bore 60 mm, O.D. 130 mm, width 31 mm, dynamic rating 39,100 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 107
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
26
1.0236
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)
26
Cup width C (in)
1.0236
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
39100
Basic static load rating Cor (lbs)
45200
Limiting speed - grease (rpm)
3,000
Limiting speed - oil (rpm)
4,000
Weight
Weight (kg)
2.032
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.10
Shaft shoulder da min (in)
3.071
Housing shoulder Da max (in)
4.646
Shaft shoulder db max (in)
3.031
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,000 rpm
4
43,481
102
1,693
6
28,988
392
6,542
8
21,741
1,024
17,067
10
17,393
2,154
35,907
15
11,595
8,323
138,724
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 173,925 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.109 (dimensions) / p.110 (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.
