SIFT BEARING STORE CATALOG

248/750-B-MBFAGSpherical Roller

248/750-B-MB is a FAG spherical roller bearing, bore 750 mm, O.D. 920 mm, width 170 mm. Dimensions, drawing, interchanges and price.

Brass cage
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Bore d750mm
Outside dia. D920mm
Width B170mm
Dynamic Cr4150kN
Static C0r12500kN
Limiting speed570rpm
Weight254kg
Cr / C0r0.33
Mean dia. dm835mm

Original catalogue drawing - FAG Schaeffler HR 1, page 742

248/750-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. D920 mmBore d750 mmWidth B170 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 diameter92036.2205
BInner-ring / bearing width1706.6929
rChamfer (min)50.1969

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)750
Outside dia. D (mm)920
Width B (mm)170
Inner-ring shoulder dia. D1 (mm)868.2

Load ratings & speeds

Basic dynamic load rating Cr (lbs)932957
Basic static load rating Cor (lbs)2810112
Basic dynamic load rating Cr (N)4.15e+06
Basic static load rating C0r (N)1.25e+07
Fatigue limit load Cur (N)740000
Factor e0.16
Factor Y04.02
Limiting speed nG (rpm)570
Reference speed nB (rpm)160

Weight

Weight (kg)254.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)5
Shaft shoulder da (mm)768
Housing shoulder Da (mm)902
Housing fillet ra max (mm)4

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 100 rpm
41,037,50010216,932
6691,66739265,416
8518,7501,024170,667
10415,0002,154359,072
15276,6678,3231,387,244

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 4,150,000 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.

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
248/1000-B-MBFAGSpherical Roller100012202186700 kN546
248/1060-B-MBFAGSpherical Roller106012802187000 kN599
248/1120-B-MBFAGSpherical Roller112013602438000 kN791
248/1180-B-MBFAGSpherical Roller118014202438400 kN790
248/1250-B-MBFAGSpherical Roller125015002509000 kN918
248/1320-B-MBFAGSpherical Roller1320160028010300 kN1235
248/1400-B-MBFAGSpherical Roller1400170030012100 kN1470
248/1500-B-MBFAGSpherical Roller1500182031513000 kN1660

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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