SIFT BEARING STORE CATALOG

249/850-B-K30-MBFAGSpherical Roller

249/850-B-K30-MB is a FAG spherical roller bearing, bore 850 mm, O.D. 1120 mm, width 272 mm. Dimensions, drawing, interchanges and price.

Tapered boreBrass cage
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Bore d850mm
Outside dia. D1120mm
Width B272mm
Dynamic Cr8400kN
Static C0r22500kN
Limiting speed445rpm
Weight743kg
Cr / C0r0.37
Mean dia. dm985mm

Original catalogue drawing - FAG Schaeffler HR 1, page 744

249/850-B-K30-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. D1120 mmBore d850 mmWidth B272 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 diameter112044.0945
BInner-ring / bearing width27210.7087
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)850
Outside dia. D (mm)1120
Width B (mm)272
Inner-ring shoulder dia. D1 (mm)1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)1888395
Basic static load rating Cor (lbs)5058201
Basic dynamic load rating Cr (N)8.4e+06
Basic static load rating C0r (N)2.25e+07
Fatigue limit load Cur (N)1.37e+06
Factor e0.23
Factor Y02.92
Limiting speed nG (rpm)445
Reference speed nB (rpm)123

Weight

Weight (kg)743.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)6
Shaft shoulder da (mm)873
Housing shoulder Da (mm)1097
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
42,100,00010216,932
61,400,00039265,416
81,050,0001,024170,667
10840,0002,154359,072
15560,0008,3231,387,244

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 8,400,000 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.

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
249/850-B-MBFAGSpherical Roller85011202728400 kN756

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
230/850-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

Request a quotation for 249/850-B-K30-MB

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.

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