HR30208JNSKTapered Roller

Name: NSK HR30208J Tapered Roller Bearing
Brand: NSK
SKU: HR30208J

HR30208J is a NSK tapered roller bearing, bore 40 mm, O.D. 80 mm, width 18 mm, dynamic rating 14,300 lbs. Dimensions, drawing, interchanges and price.

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Bore d40mm

Outside dia. D80mm

Width B18mm

Dynamic Cr14,300lbs

Static C0r15,700lbs

Limiting speed4,800rpm

Weight0.44kg

Cr / C0r0.91

Mean dia. dm60mm

Original catalogue drawing - NSK catalogue, page 105

HR30208J 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	40	1.5748
D	Outside diameter	80	3.1496
B	Inner-ring / bearing width	18	0.7087
T	Overall assembly width	19.75	0.7776
C	Cup / outer-ring width	16	0.6299

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)	40
Bore d (in)	1.5748
Outside dia. D (mm)	80
Outside dia. D (in)	3.1496
Width B (mm)	18
Width B (in)	0.7087
Overall width T (mm)	19.75
Overall width T (in)	0.7776
Cup width C (mm)	16
Cup width C (in)	0.6299

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	14300
Basic static load rating Cor (lbs)	15700
Limiting speed - grease (rpm)	4,800
Limiting speed - oil (rpm)	6,300

Weight

Weight (kg)	0.44

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.06
Shaft shoulder da min (in)	2.008
Housing shoulder Da max (in)	2.795
Shaft shoulder db max (in)	1.890

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,600 rpm
4	15,902	102	1,058
6	10,602	392	4,089
8	7,951	1,024	10,667
10	6,361	2,154	22,442
15	4,241	8,323	86,703

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 63,610 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.107 (dimensions) / p.108 (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
11208-TVH	FAG	Ball	40	80	18	19.4 kN	0.722
1208-K-TVH-C3	FAG	Ball	40	80	18	19.4 kN	0.408
1208-TVH	FAG	Ball	40	80	18	19.4 kN	0.414
6208	FAG	Ball	40	80	18	29 kN	0.372
6208-2RSR	FAG	Ball	40	80	18	29 kN	0.384
6208-2Z	FAG	Ball	40	80	18	29 kN	0.382
6208-C	FAG	Ball	40	80	18	31.5 kN	0.345
6208-C-2BRS	FAG	Ball	40	80	18	31.5 kN	0.359
6208-C-2HRS	FAG	Ball	40	80	18	31.5 kN	0.359
6208-C-2Z	FAG	Ball	40	80	18	31.5 kN	0.359

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1208	NSK	Ball	40	80	18	4,340 lbs	0.417
6208	NSK	Ball	40	80	18	6,550 lbs	0.372
7208B	NSK	Ball	40	80	18	6,830 lbs	0.381
BL208	NSK	Ball	40	80	18	9,380 lbs	0.395
208	NSK	Cylindrical Roller	40	80	18	9,790 lbs	0.386
NU208E	NSK	Cylindrical Roller	40	80	18	68.5 kN	0.379
HR30208	NSK	Tapered Roller	40	80	18	78 kN	0.437
HR30208C	NSK	Tapered Roller	40	80	18	24,100 lbs	0.424

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
HR30208	NSK	Tapered Roller	40	80	18	78 kN	0.437
HR30208C	NSK	Tapered Roller	40	80	18	24,100 lbs	0.424
HR30308	NSK	Tapered Roller	40	90	23	111 kN	0.758
HR30308C	NSK	Tapered Roller	40	90	23	19,000 lbs	0.717
HR30308J	NSK	Tapered Roller	40	90	23	20,300 lbs	0.757
HR31308	NSK	Tapered Roller	40	90	23	98 kN	0.728
HR31308J	NSK	Tapered Roller	40	90	23	18,000 lbs	0.73
HR32008	NSK	Tapered Roller	40	68	19	65 kN	0.28

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