SIFT BEARING STORE CATALOG

231/850-B-K-MBFAGSpherical Roller

231/850-B-K-MB is a FAG spherical roller bearing, bore 850 mm, O.D. 1360 mm, width 400 mm. Dimensions, drawing, interchanges and price.

Tapered boreBrass cage
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Bore d850mm
Outside dia. D1360mm
Width B400mm
Dynamic Cr16100kN
Static C0r36000kN
Limiting speed385rpm
Weight2245kg
Cr / C0r0.45
Mean dia. dm1105mm

Original catalogue drawing - FAG Schaeffler HR 1, page 744

231/850-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. D1360 mmBore d850 mmWidth B400 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 diameter136053.5433
BInner-ring / bearing width40015.748
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)850
Outside dia. D (mm)1360
Width B (mm)400
Inner-ring shoulder dia. D1 (mm)1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)3619424
Basic static load rating Cor (lbs)8093122
Basic dynamic load rating Cr (N)1.61e+07
Basic static load rating C0r (N)3.6e+07
Fatigue limit load Cur (N)2.29e+06
Factor e0.29
Factor Y02.3
Limiting speed nG (rpm)385
Reference speed nB (rpm)164

Weight

Weight (kg)2245.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)12
Shaft shoulder da (mm)898
Housing shoulder Da (mm)1312
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
44,025,00010216,932
62,683,33339265,416
82,012,5001,024170,667
101,610,0002,154359,072
151,073,3338,3231,387,244

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 16,100,000 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.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
231/850CAME4NSKSpherical Roller85013604003,550,000 lbs2258.436

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
231/850-B-MBFAGSpherical Roller850136040016100 kN2396

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
230/850-B-K-MBFAGSpherical Roller850122027210300 kN1035
230/850-B-MBFAGSpherical Roller850122027210300 kN1078
238/850-K-MBFAGSpherical Roller85010301363500 kN228
238/850-MBFAGSpherical Roller85010301363500 kN236
239/850-K-MBFAGSpherical Roller85011202006300 kN554
239/850-MBFAGSpherical Roller85011202006300 kN579
240/850-B-K30-MBFAGSpherical Roller850122036512800 kN1415
240/850-B-MBFAGSpherical Roller850122036512800 kN1438

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