30340NSKTapered Roller

Name: NSK 30340 Tapered Roller Bearing
Brand: NSK
SKU: 30340

30340 is a NSK tapered roller bearing, bore 200 mm, O.D. 420 mm, width 80 mm, dynamic rating 232,000 lbs. Dimensions, drawing, interchanges and price.

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Bore d200mm

Outside dia. D420mm

Width B80mm

Dynamic Cr232,000lbs

Static C0r312,000lbs

Limiting speed850rpm

Weight52.308kg

Cr / C0r0.74

Mean dia. dm310mm

Original catalogue drawing - NSK catalogue, page 107

30340 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	200	7.874
D	Outside diameter	420	16.5354
B	Inner-ring / bearing width	80	3.1496
T	Overall assembly width	89	3.5039
C	Cup / outer-ring width	67	2.6378

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)	200
Bore d (in)	7.8740
Outside dia. D (mm)	420
Outside dia. D (in)	16.5354
Width B (mm)	80
Width B (in)	3.1496
Overall width T (mm)	89
Overall width T (in)	3.5039
Cup width C (mm)	67
Cup width C (in)	2.6378

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	232000
Basic static load rating Cor (lbs)	312000
Limiting speed - grease (rpm)	850
Limiting speed - oil (rpm)	1,200

Weight

Weight (kg)	52.308

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.16
Shaft shoulder da min (in)	9.173
Housing shoulder Da max (in)	15.669
Shaft shoulder db max (in)	9.961

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 200 rpm
4	257,997	102	8,466
6	171,998	392	32,708
8	128,998	1,024	85,333
10	103,199	2,154	179,536
15	68,799	8,323	693,622

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 1,031,987 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.109 (dimensions) / p.110 (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
6340-M	FAG	Ball	200	420	80	380 kN	56.6
NJ340-E-M1	FAG	Cylindrical Roller	200	420	80	1180 kN	58.1
NJ340-E-TB-M1	FAG	Cylindrical Roller	200	420	80	1180 kN	58.1
NU340-E-M1	FAG	Cylindrical Roller	200	420	80	1180 kN	57.3
NU340-E-TB-M1	FAG	Cylindrical Roller	200	420	80	1180 kN	57.3
30340	FAG	Tapered Roller	200	420	80	1300 kN	52.7

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6340	NSK	Ball	200	420	80	85,300 lbs	57.606
7340B	NSK	Ball	200	420	80	97,000 lbs	53.07
340	NSK	Cylindrical Roller	200	420	80	219,000 lbs	56.245
NU340E	NSK	Cylindrical Roller	200	420	80	1400 kN	57.1
7340	NSK	Precision / Angular Contact	200	420	80	520 kN	54.4

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30240	NSK	Tapered Roller	200	360	58	145,000 lbs	23.805
32340	NSK	Tapered Roller	200	420	138	409,000 lbs	90.914
32940	NSK	Tapered Roller	200	280	48	505 kN	9.26
HR30240	NSK	Tapered Roller	200	360	58	975 kN	25.5
HR32040	NSK	Tapered Roller	200	310	70	935 kN	18.9
HR32040XJ	NSK	Tapered Roller	200	310	70	760,000 lbs	18.901
HR32240	NSK	Tapered Roller	200	360	98	1480 kN	42.6
HR32240J	NSK	Tapered Roller	200	360	98	272,000 lbs	42.642

Request a quotation for 30340

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