30240NSKTapered Roller

Name: NSK 30240 Tapered Roller Bearing
Brand: NSK
SKU: 30240

30240 is a NSK tapered roller bearing, bore 200 mm, O.D. 360 mm, width 58 mm, dynamic rating 145,000 lbs. Dimensions, drawing, interchanges and price.

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Bore d200mm

Outside dia. D360mm

Width B58mm

Dynamic Cr145,000lbs

Static C0r200,000lbs

Limiting speed900rpm

Weight23.805kg

Cr / C0r0.72

Mean dia. dm280mm

Original catalogue drawing - NSK catalogue, page 105

30240 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	360	14.1732
B	Inner-ring / bearing width	58	2.2835
T	Overall assembly width	64	2.5197
C	Cup / outer-ring width	48	1.8898

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)	360
Outside dia. D (in)	14.1732
Width B (mm)	58
Width B (in)	2.2835
Overall width T (mm)	64
Overall width T (in)	2.5197
Cup width C (mm)	48
Cup width C (in)	1.8898

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	145000
Basic static load rating Cor (lbs)	200000
Limiting speed - grease (rpm)	900
Limiting speed - oil (rpm)	1,300

Weight

Weight (kg)	23.805

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.12
Shaft shoulder da min (in)	8.937
Housing shoulder Da max (in)	13.465
Shaft shoulder db max (in)	9.528

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 300 rpm
4	161,248	102	5,644
6	107,499	392	21,805
8	80,624	1,024	56,889
10	64,499	2,154	119,691
15	42,999	8,323	462,415

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 644,992 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
6240-M	FAG	Ball	200	360	58	270 kN	27
QJ240-N2-MPA	FAG	Ball	200	360	58	510 kN	28
N240-E-M1	FAG	Cylindrical Roller	200	360	58	750 kN	27.2
NJ240-E-M1	FAG	Cylindrical Roller	200	360	58	750 kN	27.5
NU240-E-M1	FAG	Cylindrical Roller	200	360	58	750 kN	27.2
NUP240-E-M1	FAG	Cylindrical Roller	200	360	58	750 kN	28
20240-MB	FAG	Spherical Roller	200	360	58	730 kN	26.7
30240-A	FAG	Tapered Roller	200	360	58	770 kN	25.5
30240-XL	FAG	Tapered Roller	200	360	58	900 kN	25.3
B7240-C-T-P4S	FAG	Precision / Angular Contact	200	360	58	325 kN	24.1

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6240	NSK	Ball	200	360	58	296 kN	26.7
7240B	NSK	Ball	200	360	58	68,300 lbs	25.31
240	NSK	Cylindrical Roller	200	360	58	140,000 lbs	26.308
NU240E	NSK	Cylindrical Roller	200	360	58	945 kN	27.4
HR30240	NSK	Tapered Roller	200	360	58	975 kN	25.5
7240	NSK	Precision / Angular Contact	200	360	58	370 kN	26.5
7240A5	NSK	Precision / Angular Contact	200	360	58	78,300 lbs	26.404
7240C	NSK	Precision / Angular Contact	200	360	58	82,700 lbs	26.204

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30340	NSK	Tapered Roller	200	420	80	232,000 lbs	52.308
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 30240

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