SIFT BEARING STORE CATALOG

231/900-B-K-MBFAGSpherical Roller

231/900-B-K-MB is a FAG spherical roller bearing, bore 900 mm, O.D. 1420 mm, width 412 mm. Dimensions, drawing, interchanges and price.

Tapered boreBrass cage
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Bore d900mm
Outside dia. D1420mm
Width B412mm
Dynamic Cr18000kN
Static C0r40500kN
Limiting speed365rpm
Weight2469kg
Cr / C0r0.44
Mean dia. dm1160mm

Original catalogue drawing - FAG Schaeffler HR 1, page 746

231/900-B-K-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. D1420 mmBore d900 mmWidth B412 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 diameter90035.4331
DOutside diameter142055.9055
BInner-ring / bearing width41216.2205
rChamfer (min)120.4724

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)900
Outside dia. D (mm)1420
Width B (mm)412
Inner-ring shoulder dia. D1 (mm)1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)4046561
Basic static load rating Cor (lbs)9104762
Basic dynamic load rating Cr (N)1.8e+07
Basic static load rating C0r (N)4.05e+07
Fatigue limit load Cur (N)2.55e+06
Factor e0.29
Factor Y02.28
Limiting speed nG (rpm)365
Reference speed nB (rpm)149

Weight

Weight (kg)2469.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)12
Shaft shoulder da (mm)948
Housing shoulder Da (mm)1372
Housing fillet ra max (mm)10

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 100 rpm
44,500,00010216,932
63,000,00039265,416
82,250,0001,024170,667
101,800,0002,154359,072
151,200,0008,3231,387,244

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 18,000,000 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.746 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
231/900CAME4NSKSpherical Roller90014204123,850,000 lbs2480.697

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
231/900-B-MBFAGSpherical Roller900142041218000 kN2570

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
231/1000-B-K-MBFAGSpherical Roller1000158046222000 kN3474
231/1000-B-MBFAGSpherical Roller1000158046222000 kN3474
231/500-BEA-XL-K-MB1FAGSpherical Roller5008302648300 kN574
231/500-BEA-XL-MB1FAGSpherical Roller5008302648300 kN593
231/530-BEA-XL-K-MB1FAGSpherical Roller5308702728900 kN634
231/530-BEA-XL-MB1FAGSpherical Roller5308702728900 kN655
231/560-BEA-XL-K-MB1FAGSpherical Roller5609202809700 kN731
231/560-BEA-XL-MB1FAGSpherical Roller5609202809700 kN754

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
230/900-B-K-MBFAGSpherical Roller900128028011100 kN1153
230/900-B-MBFAGSpherical Roller900128028011100 kN1228
238/900-B-K-MBFAGSpherical Roller90010901403750 kN262
238/900-B-MBFAGSpherical Roller90010901403750 kN271
239/900-K-MBFAGSpherical Roller90011802066500 kN641
239/900-MBFAGSpherical Roller90011802066500 kN653
240/900-B-K30-MBFAGSpherical Roller900128037514200 kN1569
240/900-B-MBFAGSpherical Roller900128037514200 kN1595

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