HR31320J is a NSK tapered roller bearing, bore 100 mm, O.D. 215 mm, width 47 mm, dynamic rating 67,200 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
100
3.937
D
Outside diameter
215
8.4646
B
Inner-ring / bearing width
47
1.8504
T
Overall assembly width
51.5
2.0276
C
Cup / outer-ring width
34
1.3386
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)
100
Bore d (in)
3.9370
Outside dia. D (mm)
215
Outside dia. D (in)
8.4646
Width B (mm)
47
Width B (in)
1.8504
Overall width T (mm)
51.5
Overall width T (in)
2.0276
Cup width C (mm)
34
Cup width C (in)
1.3386
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
67200
Basic static load rating Cor (lbs)
114000
Limiting speed - grease (rpm)
1,730
Limiting speed - oil (rpm)
2,350
Weight
Weight (kg)
9.022
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.10
Shaft shoulder da min (in)
4.646
Housing shoulder Da max (in)
7.913
Shaft shoulder db max (in)
7.913
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 500 rpm
4
74,730
102
3,386
6
49,820
392
13,083
8
37,365
1,024
34,133
10
29,892
2,154
71,814
15
19,928
8,323
277,449
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 298,920 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.
