248/900-B-MBFAGSpherical Roller

Name: FAG 248/900-B-MB Spherical Roller Bearing
Brand: FAG
SKU: 248/900-B-MB

248/900-B-MB is a FAG spherical roller bearing, bore 900 mm, O.D. 1090 mm, width 190 mm. Dimensions, drawing, interchanges and price.

Brass cage

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Bore d900mm

Outside dia. D1090mm

Width B190mm

Dynamic Cr5200kN

Static C0r16700kN

Limiting speed465rpm

Weight382kg

Cr / C0r0.31

Mean dia. dm995mm

Original catalogue drawing - FAG Schaeffler HR 1, page 746

248/900-B-MB FAG Spherical 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	900	35.4331
D	Outside diameter	1090	42.9134
B	Inner-ring / bearing width	190	7.4803
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)	900
Outside dia. D (mm)	1090
Width B (mm)	190
Inner-ring shoulder dia. D1 (mm)	1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	1169007
Basic static load rating Cor (lbs)	3754309
Basic dynamic load rating Cr (N)	5.2e+06
Basic static load rating C0r (N)	1.67e+07
Fatigue limit load Cur (N)	960000
Factor e	0.15
Factor Y0	4.31
Limiting speed nG (rpm)	465
Reference speed nB (rpm)	124

Weight

Weight (kg)	382.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	5
Shaft shoulder da (mm)	918
Housing shoulder Da (mm)	1072
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 100 rpm
4	1,300,000	102	16,932
6	866,667	392	65,416
8	650,000	1,024	170,667
10	520,000	2,154	359,072
15	346,667	8,323	1,387,244

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 5,200,000 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.746 (dimensions)

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

Series variants (different suffix)

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
248/1000-B-MB	FAG	Spherical Roller	1000	1220	218	6700 kN	546
248/1060-B-MB	FAG	Spherical Roller	1060	1280	218	7000 kN	599
248/1120-B-MB	FAG	Spherical Roller	1120	1360	243	8000 kN	791
248/1180-B-MB	FAG	Spherical Roller	1180	1420	243	8400 kN	790
248/1250-B-MB	FAG	Spherical Roller	1250	1500	250	9000 kN	918
248/1320-B-MB	FAG	Spherical Roller	1320	1600	280	10300 kN	1235
248/1400-B-MB	FAG	Spherical Roller	1400	1700	300	12100 kN	1470
248/1500-B-MB	FAG	Spherical Roller	1500	1820	315	13000 kN	1660

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
230/900-B-K-MB	FAG	Spherical Roller	900	1280	280	11100 kN	1153
230/900-B-MB	FAG	Spherical Roller	900	1280	280	11100 kN	1228
231/900-B-K-MB	FAG	Spherical Roller	900	1420	412	18000 kN	2469
231/900-B-MB	FAG	Spherical Roller	900	1420	412	18000 kN	2570
238/900-B-K-MB	FAG	Spherical Roller	900	1090	140	3750 kN	262
238/900-B-MB	FAG	Spherical Roller	900	1090	140	3750 kN	271
239/900-K-MB	FAG	Spherical Roller	900	1180	206	6500 kN	641
239/900-MB	FAG	Spherical Roller	900	1180	206	6500 kN	653

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