SIFT BEARING STORE CATALOG

249/1250-B-MBFAGSpherical Roller

249/1250-B-MB is a FAG spherical roller bearing, bore 1250 mm, O.D. 1630 mm, width 375 mm. Dimensions, drawing, interchanges and price.

Brass cage
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Bore d1250mm
Outside dia. D1630mm
Width B375mm
Dynamic Cr16000kN
Static C0r45500kN
Limiting speed295rpm
Weight2132kg
Cr / C0r0.35
Mean dia. dm1440mm

Original catalogue drawing - FAG Schaeffler HR 1, page 750

249/1250-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

DdBOutside dia. D1630 mmBore d1250 mmWidth B375 mm

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)

SymbolDimensionmminch
dBore diameter125049.2126
DOutside diameter163064.1732
BInner-ring / bearing width37514.7638
rChamfer (min)7.50.2953

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)1250
Outside dia. D (mm)1630
Width B (mm)375
Inner-ring shoulder dia. D1 (mm)1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)3596943
Basic static load rating Cor (lbs)10228807
Basic dynamic load rating Cr (N)1.6e+07
Basic static load rating C0r (N)4.55e+07
Fatigue limit load Cur (N)2.7e+06
Factor e0.21
Factor Y03.16
Limiting speed nG (rpm)295

Weight

Weight (kg)2132.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)7.5
Shaft shoulder da (mm)1278
Housing shoulder Da (mm)1602
Housing fillet ra max (mm)6

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 100 rpm
44,000,00010216,932
62,666,66739265,416
82,000,0001,024170,667
101,600,0002,154359,072
151,066,6678,3231,387,244

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 16,000,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandFAG
Source catalogueFAG / Schaeffler Rolling Bearings HR 1
Catalogue pagep.750 (dimensions)

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

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
249/1250-B-K30-MBFAGSpherical Roller1250163037516000 kN2096

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
249/1000-B-K30-MBFAGSpherical Roller1000132031511400 kN1192
249/1000-B-MBFAGSpherical Roller1000132031511400 kN1212
249/1060-B-K30-MBFAGSpherical Roller1060140033512900 kN1411
249/1060-B-MBFAGSpherical Roller1060140033512900 kN1436
249/1120-B-K30-MBFAGSpherical Roller1120146033512800 kN1518
249/1120-B-MBFAGSpherical Roller1120146033512800 kN1545
249/1180-B-K30-MBFAGSpherical Roller1180154035514700 kN1751
249/1180-B-MBFAGSpherical Roller1180154035514700 kN1788

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
230/1250-B-K-MBFAGSpherical Roller1250175037518100 kN2923
230/1250-B-MBFAGSpherical Roller1250175037518100 kN2933
248/1250-B-MBFAGSpherical Roller125015002509000 kN918

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