SIFT BEARING STORE CATALOG

231/670-B-K-MBFAGSpherical Roller

231/670-B-K-MB is a FAG spherical roller bearing, bore 670 mm, O.D. 1090 mm, width 336 mm. Dimensions, drawing, interchanges and price.

Tapered boreBrass cage
Request a quoteEmail usSearch the catalog
Bore d670mm
Outside dia. D1090mm
Width B336mm
Dynamic Cr11000kN
Static C0r23900kN
Limiting speed495rpm
Weight1241kg
Cr / C0r0.46
Mean dia. dm880mm

Original catalogue drawing - FAG Schaeffler HR 1, page 740

231/670-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. D1090 mmBore d670 mmWidth B336 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 diameter67026.378
DOutside diameter109042.9134
BInner-ring / bearing width33613.2283
rChamfer (min)7.50.2953

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)670
Outside dia. D (mm)1090
Width B (mm)336
Inner-ring shoulder dia. D1 (mm)948.2

Load ratings & speeds

Basic dynamic load rating Cr (lbs)2472898
Basic static load rating Cor (lbs)5372934
Basic dynamic load rating Cr (N)1.1e+07
Basic static load rating C0r (N)2.39e+07
Fatigue limit load Cur (N)1.56e+06
Factor e0.31
Factor Y02.16
Limiting speed nG (rpm)495
Reference speed nB (rpm)230

Weight

Weight (kg)1241.0

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)7.5
Shaft shoulder da (mm)702
Housing shoulder Da (mm)1058
Housing fillet ra max (mm)6

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 100 rpm
42,750,00010216,932
61,833,33339265,416
81,375,0001,024170,667
101,100,0002,154359,072
15733,3338,3231,387,244

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 11,000,000 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.740 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
231/670CAME4NSKSpherical Roller67010903362,390,000 lbs1231.503

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
231/670-B-MBFAGSpherical Roller670109033611000 kN1279

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
230/670-B-K-MBFAGSpherical Roller6709802307200 kN590
230/670-B-MBFAGSpherical Roller6709802307200 kN600
232/670-B-K-MBFAGSpherical Roller670122043816000 kN2246
232/670-B-MBFAGSpherical Roller670122043816000 kN2317
238/670-B-K-MBFAGSpherical Roller6708201122380 kN124
238/670-B-MBFAGSpherical Roller6708201122380 kN129
239/670-B-K-MBFAGSpherical Roller6709001704300 kN310
239/670-B-MBFAGSpherical Roller6709001704300 kN320

Request a quotation for 231/670-B-K-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.

Online enquiry formrichard@bearingsfit.com