SIFT BEARING STORE CATALOG

231/800-K-MBFAGSpherical Roller

231/800-K-MB is a FAG spherical roller bearing, bore 800 mm, O.D. 1280 mm, width 375 mm. Dimensions, drawing, interchanges and price.

Tapered boreBrass cage
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Bore d800mm
Outside dia. D1280mm
Width B375mm
Dynamic Cr14900kN
Static C0r33500kN
Limiting speed415rpm
Weight1861kg
Cr / C0r0.44
Mean dia. dm1040mm

Original catalogue drawing - FAG Schaeffler HR 1, page 744

231/800-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. D1280 mmBore d800 mmWidth B375 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 diameter80031.4961
DOutside diameter128050.3937
BInner-ring / bearing width37514.7638
rChamfer (min)9.50.374

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)800
Outside dia. D (mm)1280
Width B (mm)375
Inner-ring shoulder dia. D1 (mm)1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)3349653
Basic static load rating Cor (lbs)7531100
Basic dynamic load rating Cr (N)1.49e+07
Basic static load rating C0r (N)3.35e+07
Fatigue limit load Cur (N)1.66e+06
Factor e0.29
Factor Y02.26
Limiting speed nG (rpm)415
Reference speed nB (rpm)175

Weight

Weight (kg)1861.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)9.5
Shaft shoulder da (mm)840
Housing shoulder Da (mm)1240
Housing fillet ra max (mm)8

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 100 rpm
43,725,00010216,932
62,483,33339265,416
81,862,5001,024170,667
101,490,0002,154359,072
15993,3338,3231,387,244

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 14,900,000 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
231/800CAME4NSKSpherical Roller80012803753,100,000 lbs1869.254

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
231/800-MBFAGSpherical Roller800128037514900 kN1968

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
230/800-K-MBFAGSpherical Roller80011502589300 kN877
230/800-MBFAGSpherical Roller80011502589300 kN899
232/800-K-MBFAGSpherical Roller800142048820000 kN3325
232/800-MBFAGSpherical Roller800142048820000 kN3377
238/800-B-K-MBFAGSpherical Roller8009801363400 kN216
238/800-B-MBFAGSpherical Roller8009801363400 kN223
239/800-B-K-MBFAGSpherical Roller80010601955900 kN490
239/800-B-MBFAGSpherical Roller80010601955900 kN506

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