6256-MFAGBall

Name: FAG 6256-M Ball Bearing
Brand: FAG
SKU: 6256-M

6256-M is a FAG ball bearing, bore 280 mm, O.D. 500 mm, width 80 mm, dynamic rating 425 kN. Dimensions, drawing, interchanges and price.

Request a quote WhatsApp Email us Search the catalog

Bore d280mm

Outside dia. D500mm

Width B80mm

Dynamic Cr425kN

Static C0r600kN

Limiting speed3,000rpm

Weight72.9kg

Cr / C0r0.71

Mean dia. dm390mm

Original catalogue drawing - FAG Schaeffler HR 1, page 220

6256-M FAG Ball 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
r	Chamfer (min)	5	0.1969

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
Inner-ring OD d1 (mm)	356.7
Inner-ring shoulder dia. D1 (mm)	423

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	95544
Basic static load rating Cor (lbs)	134885
Basic dynamic load rating Cr (N)	425000
Basic static load rating C0r (N)	600000
Fatigue limit load Cur (N)	20300
Limiting speed nG (rpm)	3,000
Reference speed nB (rpm)	1,690

Weight

Weight (kg)	72.9

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	5
Shaft shoulder da (mm)	291
Housing shoulder Da (mm)	489
Housing fillet ra max (mm)	4

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,000 rpm
4	106,250	64	1,067
6	70,833	216	3,600
8	53,125	512	8,533
10	42,500	1,000	16,667
15	28,333	3,375	56,250

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 425,000 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.220 (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
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
30256-XL	FAG	Tapered Roller	280	500	80	1740 kN	66.5

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
16056-M	FAG	Ball	280	420	44	240 kN	23.2
6056-M	FAG	Ball	280	420	65	320 kN	31.7

Request a quotation for 6256-M

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.

Online enquiry form richard@bearingsfit.com WhatsApp +86 156 2149 6516