30260NSKTapered Roller

Name: NSK 30260 Tapered Roller Bearing
Brand: NSK
SKU: 30260

30260 is a NSK tapered roller bearing, bore 300 mm, O.D. 540 mm, width 85 mm, dynamic rating 324,000 lbs. Dimensions, drawing, interchanges and price.

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Bore d300mm

Outside dia. D540mm

Width B85mm

Dynamic Cr324,000lbs

Static C0r472,000lbs

Limiting speed600rpm

Weight80.612kg

Cr / C0r0.69

Mean dia. dm420mm

Original catalogue drawing - NSK catalogue, page 105

30260 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	300	11.811
D	Outside diameter	540	21.2598
B	Inner-ring / bearing width	85	3.3465
T	Overall assembly width	96	3.7795
C	Cup / outer-ring width	71	2.7953

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)	300
Bore d (in)	11.8110
Outside dia. D (mm)	540
Outside dia. D (in)	21.2598
Width B (mm)	85
Width B (in)	3.3465
Overall width T (mm)	96
Overall width T (in)	3.7795
Cup width C (mm)	71
Cup width C (in)	2.7953

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	324000
Basic static load rating Cor (lbs)	472000
Limiting speed - grease (rpm)	600
Limiting speed - oil (rpm)	800

Weight

Weight (kg)	80.612

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.16
Shaft shoulder da min (in)	13.110
Housing shoulder Da max (in)	20.394
Shaft shoulder db max (in)	13.976

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 200 rpm
4	360,306	102	8,466
6	240,204	392	32,708
8	180,153	1,024	85,333
10	144,122	2,154	179,536
15	96,082	8,323	693,622

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 1,441,224 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
NU260-E-M1	FAG	Cylindrical Roller	300	540	85	1600 kN	90.4
NU260-E-TB-M1	FAG	Cylindrical Roller	300	540	85	1600 kN	90.4
30260-XL	FAG	Tapered Roller	300	540	85	2020 kN	83.7

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
260	NSK	Cylindrical Roller	300	540	85	315,000 lbs	88.904
NU260	NSK	Cylindrical Roller	300	540	85	1730 kN	89.2

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
32260	NSK	Tapered Roller	300	540	140	499,000 lbs	131.818
32364	NSK	Tapered Roller	300	670	200	5150 kN	343
32960	NSK	Tapered Roller	300	420	72	1100 kN	30.5
HR32060	NSK	Tapered Roller	300	460	100	1770 kN	56.6
HR32060XJ	NSK	Tapered Roller	300	460	100	1,440,000 lbs	56.608
HR32064	NSK	Tapered Roller	300	480	100	1850 kN	60
HR32960	NSK	Tapered Roller	300	420	76	1240 kN	31.4
HR32960J	NSK	Tapered Roller	300	420	76	227,000 lbs	31.407

Request a quotation for 30260

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