HR31317J is a NSK tapered roller bearing, bore 85 mm, O.D. 180 mm, width 41 mm, dynamic rating 58,700 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
85
3.3465
D
Outside diameter
180
7.0866
B
Inner-ring / bearing width
41
1.6142
T
Overall assembly width
44.5
1.752
C
Cup / outer-ring width
28
1.1024
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)
85
Bore d (in)
3.3465
Outside dia. D (mm)
180
Outside dia. D (in)
7.0866
Width B (mm)
41
Width B (in)
1.6142
Overall width T (mm)
44.5
Overall width T (in)
1.7520
Cup width C (mm)
28
Cup width C (in)
1.1024
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
58700
Basic static load rating Cor (lbs)
70800
Limiting speed - grease (rpm)
2,110
Limiting speed - oil (rpm)
2,860
Weight
Weight (kg)
4.881
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.10
Shaft shoulder da min (in)
4.055
Housing shoulder Da max (in)
6.535
Shaft shoulder db max (in)
4.055
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 700 rpm
4
65,278
102
2,419
6
43,518
392
9,345
8
32,639
1,024
24,381
10
26,111
2,154
51,296
15
17,407
8,323
198,178
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 261,111 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.
