497/493NSKTapered Roller

Name: NSK 497/493 Tapered Roller Bearing
Brand: NSK
SKU: 497/493

497/493 is a NSK tapered roller bearing, bore 85.72 mm, O.D. 136.53 mm, width 29.77 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly

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Bore d85.72mm

Outside dia. D136.53mm

Width B29.77mm

Dynamic Cr29,200lbs

Static C0r43,200lbs

Weight1.529kg

Cr / C0r0.68

Mean dia. dm111.1mm

Original catalogue drawing - NSK catalogue, page 137

497/493 NSK Tapered Roller bearing catalogue drawing

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	85.725	3.375
D	Outside diameter	136.525	5.375
B	Inner-ring / bearing width	29.769	1.172
T	Overall assembly width	30.162	1.1875
C	Cup / outer-ring width	47.625	1.875
r	Chamfer (min)	3.556	0.14

Notes

Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. 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)	85.725
Bore d (in)	3.3750
Outside dia. D (mm)	136.525
Outside dia. D (in)	5.3750
Width B (in)	1.1720
Overall width T (mm)	30.162
Overall width T (in)	1.1875
Cup width C (in)	1.8750

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	29200
Basic static load rating Cor (lbs)	43200
Effective centre a (in)	1.16

Weight

Cone weight (kg)	0.98
Cup weight (kg)	0.549
Total weight (kg)	1.529

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.14
Chamfer r1 (in)	0.13
Shaft shoulder da min (in)	4.80
Shaft shoulder da (in)	3.66
Housing shoulder Da (in)	5.12

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	32,472	102	3,386
6	21,648	392	13,083
8	16,236	1,024	34,133
10	12,989	2,154	71,814
15	8,659	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 129,888 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) are not included.

Source & traceability

Brand	NSK
Source catalogue	NSK inch product catalogue
Catalogue page	p.139 (dimensions) / p.140 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
K497-493	FAG	Tapered Roller	85.72	136.53	29.77	134 kN	1.75
497/493	Timken	Tapered Roller	85.72	136.53	29.77	154 kN	1.51
497A/493	Timken	Tapered Roller	85.72	136.53	29.77	154 kN	1.48

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
665A/653	NSK	Tapered Roller	85.72	146.05	41.27	46,500 lbs	2.595
749/742	NSK	Tapered Roller	85.03	150.09	46.67	59,600 lbs	3.221
30217C	NSK	Tapered Roller	85	150	28	38,400 lbs	2.041
HR30217J	NSK	Tapered Roller	85	150	28	41,400 lbs	2.118
HR30317	NSK	Tapered Roller	85	180	41	380 kN	5.08
HR30317J	NSK	Tapered Roller	85	180	41	69,700 lbs	5.08
HR31317	NSK	Tapered Roller	85	180	41	320 kN	4.88
HR31317J	NSK	Tapered Roller	85	180	41	58,700 lbs	4.881

Request a quotation for 497/493

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