30252NSKTapered Roller

Name: NSK 30252 Tapered Roller Bearing
Brand: NSK
SKU: 30252

30252 is a NSK tapered roller bearing, bore 260 mm, O.D. 480 mm, width 80 mm, dynamic rating 268,000 lbs. Dimensions, drawing, interchanges and price.

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Bore d260mm

Outside dia. D480mm

Width B80mm

Dynamic Cr268,000lbs

Static C0r382,000lbs

Limiting speed670rpm

Weight60.709kg

Cr / C0r0.7

Mean dia. dm370mm

Original catalogue drawing - NSK catalogue, page 105

30252 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	260	10.2362
D	Outside diameter	480	18.8976
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)	260
Bore d (in)	10.2362
Outside dia. D (mm)	480
Outside dia. D (in)	18.8976
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)	268000
Basic static load rating Cor (lbs)	382000
Limiting speed - grease (rpm)	670
Limiting speed - oil (rpm)	900

Weight

Weight (kg)	60.709

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.16
Shaft shoulder da min (in)	11.535
Housing shoulder Da max (in)	18.031
Shaft shoulder db max (in)	12.441

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 200 rpm
4	298,031	102	8,466
6	198,687	392	32,708
8	149,015	1,024	85,333
10	119,212	2,154	179,536
15	79,475	8,323	693,622

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 1,192,123 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
6252-M	FAG	Ball	260	480	80	405 kN	68.4
NJ252-E-M1	FAG	Cylindrical Roller	260	480	80	1340 kN	69.4
NJ252-E-TB-M1	FAG	Cylindrical Roller	260	480	80	1350 kN	69.4
NU252-E-M1	FAG	Cylindrical Roller	260	480	80	1340 kN	68.4
NU252-E-TB-M1	FAG	Cylindrical Roller	260	480	80	1350 kN	68.4
30252-XL	FAG	Tapered Roller	260	480	80	1730 kN	63.2

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
252	NSK	Cylindrical Roller	260	480	80	249,000 lbs	66.678
NU252	NSK	Cylindrical Roller	260	480	80	1360 kN	67.1

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30352	NSK	Tapered Roller	260	540	102	420,000 lbs	114.296
32252	NSK	Tapered Roller	260	480	130	427,000 lbs	102.784
HR32052XJ	NSK	Tapered Roller	260	400	87	1,160,000 lbs	38.505
HR32952	NSK	Tapered Roller	260	360	63.5	900 kN	18.6
HR32952J	NSK	Tapered Roller	260	360	63.5	164,000 lbs	18.602

Request a quotation for 30252

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