SIFT BEARING STORE CATALOG

249/750-B-MBFAGSpherical Roller

249/750-B-MB is a FAG spherical roller bearing, bore 750 mm, O.D. 1000 mm, width 250 mm. Dimensions, drawing, interchanges and price.

Brass cage
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Bore d750mm
Outside dia. D1000mm
Width B250mm
Dynamic Cr7200kN
Static C0r18900kN
Limiting speed510rpm
Weight571kg
Cr / C0r0.38
Mean dia. dm875mm

Original catalogue drawing - FAG Schaeffler HR 1, page 742

249/750-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. D1000 mmBore d750 mmWidth B250 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 diameter75029.5276
DOutside diameter100039.3701
BInner-ring / bearing width2509.8425
rChamfer (min)60.2362

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)750
Outside dia. D (mm)1000
Width B (mm)250
Inner-ring shoulder dia. D1 (mm)921.7

Load ratings & speeds

Basic dynamic load rating Cr (lbs)1618624
Basic static load rating Cor (lbs)4248889
Basic dynamic load rating Cr (N)7.2e+06
Basic static load rating C0r (N)1.89e+07
Fatigue limit load Cur (N)1.17e+06
Factor e0.22
Factor Y03.03
Limiting speed nG (rpm)510
Reference speed nB (rpm)143

Weight

Weight (kg)571.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)6
Shaft shoulder da (mm)773
Housing shoulder Da (mm)977
Housing fillet ra max (mm)5

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 100 rpm
41,800,00010216,932
61,200,00039265,416
8900,0001,024170,667
10720,0002,154359,072
15480,0008,3231,387,244

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 7,200,000 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.742 (dimensions)

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

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
249/750-B-K30-MBFAGSpherical Roller75010002507200 kN558

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
230/750-K-MBFAGSpherical Roller75010902508500 kN786
230/750-MBFAGSpherical Roller75010902508500 kN806
231/750-B-K-MBFAGSpherical Roller750122036514100 kN1700
231/750-B-MBFAGSpherical Roller750122036514100 kN1754
232/750-B-K-MBFAGSpherical Roller750136047519300 kN3087
232/750-B-MBFAGSpherical Roller750136047519300 kN3136
238/750-B-K-MBFAGSpherical Roller7509201283000 kN180
238/750-B-MBFAGSpherical Roller7509201283000 kN186

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