SIFT BEARING STORE CATALOG

248/850-MBFAGSpherical Roller

248/850-MB is a FAG spherical roller bearing, bore 850 mm, O.D. 1030 mm, width 180 mm. Dimensions, drawing, interchanges and price.

Brass cage
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Bore d850mm
Outside dia. D1030mm
Width B180mm
Dynamic Cr4850kN
Static C0r14900kN
Limiting speed510rpm
Weight312kg
Cr / C0r0.33
Mean dia. dm940mm

Original catalogue drawing - FAG Schaeffler HR 1, page 744

248/850-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. D1030 mmBore d850 mmWidth B180 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 diameter85033.4646
DOutside diameter103040.5512
BInner-ring / bearing width1807.0866
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)850
Outside dia. D (mm)1030
Width B (mm)180
Inner-ring shoulder dia. D1 (mm)973.9

Load ratings & speeds

Basic dynamic load rating Cr (lbs)1090323
Basic static load rating Cor (lbs)3349653
Basic dynamic load rating Cr (N)4.85e+06
Basic static load rating C0r (N)1.49e+07
Fatigue limit load Cur (N)880000
Factor e0.15
Factor Y04.31
Limiting speed nG (rpm)510
Reference speed nB (rpm)135

Weight

Weight (kg)312.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)5
Shaft shoulder da (mm)868
Housing shoulder Da (mm)1012
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
41,212,50010216,932
6808,33339265,416
8606,2501,024170,667
10485,0002,154359,072
15323,3338,3231,387,244

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 4,850,000 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.744 (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
230/850-B-K-MBFAGSpherical Roller850122027210300 kN1035
230/850-B-MBFAGSpherical Roller850122027210300 kN1078
231/850-B-K-MBFAGSpherical Roller850136040016100 kN2245
231/850-B-MBFAGSpherical Roller850136040016100 kN2396
238/850-K-MBFAGSpherical Roller85010301363500 kN228
238/850-MBFAGSpherical Roller85010301363500 kN236
239/850-K-MBFAGSpherical Roller85011202006300 kN554
239/850-MBFAGSpherical Roller85011202006300 kN579

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