HR31310J is a NSK tapered roller bearing, bore 50 mm, O.D. 110 mm, width 27 mm, dynamic rating 25,600 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
50
1.9685
D
Outside diameter
110
4.3307
B
Inner-ring / bearing width
27
1.063
T
Overall assembly width
29.25
1.1516
C
Cup / outer-ring width
19
0.748
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)
50
Bore d (in)
1.9685
Outside dia. D (mm)
110
Outside dia. D (in)
4.3307
Width B (mm)
27
Width B (in)
1.0630
Overall width T (mm)
29.25
Overall width T (in)
1.1516
Cup width C (mm)
19
Cup width C (in)
0.7480
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
25600
Basic static load rating Cor (lbs)
29700
Limiting speed - grease (rpm)
3,510
Limiting speed - oil (rpm)
4,760
Weight
Weight (kg)
1.256
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.08
Shaft shoulder da min (in)
2.441
Housing shoulder Da max (in)
3.937
Shaft shoulder db max (in)
2.465
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,100 rpm
4
28,469
102
1,539
6
18,979
392
5,947
8
14,234
1,024
15,515
10
11,387
2,154
32,643
15
7,592
8,323
126,113
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 113,874 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.
