30256-XLFAGTapered Roller

Name: FAG 30256-XL Tapered Roller Bearing
Brand: FAG
SKU: 30256-XL

30256-XL is a FAG tapered roller bearing, bore 280 mm, O.D. 500 mm, width 80 mm, dynamic rating 1740 kN. Dimensions, drawing, interchanges and price.

X-life

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Bore d280mm

Outside dia. D500mm

Width B80mm

Dynamic Cr1740kN

Static C0r2130kN

Limiting speed1,520rpm

Weight66.5kg

Cr / C0r0.82

Mean dia. dm390mm

Original catalogue drawing - FAG Schaeffler HR 1, page 612

30256-XL FAG 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	280	11.0236
D	Outside diameter	500	19.685
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)	280
Outside dia. D (mm)	500
Width B (mm)	80
Overall width T (mm)	89
Cup width C (mm)	67
Inner-ring OD d1 (mm)	369.5

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	391168
Basic static load rating Cor (lbs)	478843
Basic dynamic load rating Cr (N)	1.74e+06
Basic static load rating C0r (N)	2.13e+06
Basic dynamic axial rating Ca (N)	12
Fatigue limit load Cur (N)	229000
Factor e	0.45
Factor Y	1.33
Factor Y0	0.73
Limiting speed nG (rpm)	1,520
Reference speed nB (rpm)	830
Effective load centre a (mm)	97

Weight

Weight (kg)	66.5

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)	6
Shaft shoulder da (mm)	330
Shaft shoulder db (mm)	300
Housing shoulder Da (mm)	433
Housing shoulder Db (mm)	465
Housing fillet ra max (mm)	6
Fillet rb max (mm)	5

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	435,000	102	3,386
6	290,000	392	13,083
8	217,500	1,024	34,133
10	174,000	2,154	71,814
15	116,000	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 1,740,000 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) are not included.

Source & traceability

Brand	FAG
Source catalogue	FAG / Schaeffler Rolling Bearings HR 1
Catalogue page	p.612 (dimensions)

Load ratings in newtons, fatigue limit load Cur, limiting speed nG and reference speed nB.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
256	NSK	Cylindrical Roller	280	500	80	257,000 lbs	70.307
NU256	NSK	Cylindrical Roller	280	500	80	1410 kN	70.7
30256	NSK	Tapered Roller	280	500	80	279,000 lbs	66.311

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6256-M	FAG	Ball	280	500	80	425 kN	72.9
NU256-E-M1	FAG	Cylindrical Roller	280	500	80	1400 kN	72.1
NU256-E-TB-M1	FAG	Cylindrical Roller	280	500	80	1400 kN	72.1

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30356	FAG	Tapered Roller	280	580	108	2300 kN	133
32056-X	FAG	Tapered Roller	280	420	87	1210 kN	40.5
32056-X-XL	FAG	Tapered Roller	280	420	87	1420 kN	40.8
32256-XL	FAG	Tapered Roller	280	500	130	2700 kN	112
32356	FAG	Tapered Roller	280	580	175	3600 kN	220
32956	FAG	Tapered Roller	280	380	63.5	740 kN	19.9
32956-XL	FAG	Tapered Roller	280	380	63.5	880 kN	19.8
KLM654642-LM654610	FAG	Tapered Roller	279.98	380.9	65.09	690 kN	21.3

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