SIFT BEARING STORE CATALOG

23960-B-K-MBFAGSpherical Roller

23960-B-K-MB is a FAG spherical roller bearing, bore 300 mm, O.D. 420 mm, width 90 mm. Dimensions, drawing, interchanges and price.

Tapered boreBrass cage
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Bore d300mm
Outside dia. D420mm
Width B90mm
Dynamic Cr1270kN
Static C0r2650kN
Limiting speed1,780rpm
Weight39.1kg
Cr / C0r0.48
Mean dia. dm360mm

Original catalogue drawing - FAG Schaeffler HR 1, page 766

23960-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. D420 mmBore d300 mmWidth B90 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 diameter30011.811
DOutside diameter42016.5354
BInner-ring / bearing width903.5433
rChamfer (min)30.1181

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)300
Outside dia. D (mm)420
Width B (mm)90
Inner-ring shoulder dia. D1 (mm)384.6

Load ratings & speeds

Basic dynamic load rating Cr (lbs)285507
Basic static load rating Cor (lbs)595744
Basic dynamic load rating Cr (N)1.27e+06
Basic static load rating C0r (N)2.65e+06
Fatigue limit load Cur (N)165000
Factor e0.2
Factor Y03.34
Limiting speed nG (rpm)1,780
Reference speed nB (rpm)1,000

Weight

Weight (kg)39.1

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)3
Shaft shoulder da (mm)312.4
Shaft shoulder db (mm)311
Housing shoulder Da (mm)407.6
Housing fillet ra max (mm)2.5

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4317,5001023,386
6211,66739213,083
8158,7501,02434,133
10127,0002,15471,814
1584,6678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,270,000 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.766 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
23960CAME4NSKSpherical Roller30042090276,000 lbs37.857

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
23960-B-MBFAGSpherical Roller300420901270 kN40.6

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
23960-B-MBFAGSpherical Roller300420901270 kN40.6

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
22260-BEA-XL-K-MB1FAGSpherical Roller3005401403100 kN139
22260-BEA-XL-MB1FAGSpherical Roller3005401403100 kN142
23060-BE-XLFAGSpherical Roller3004601182160 kN70.5
23060-BE-XL-KFAGSpherical Roller3004601182160 kN68.4
23160-BEA-XL-2RSR-MB1FAGSpherical Roller3005001603250 kN130
23160-BEA-XL-K-MB1FAGSpherical Roller3005001603250 kN126
23160-BEA-XL-MB1FAGSpherical Roller3005001603250 kN130
23260-BEA-XL-K-MB1FAGSpherical Roller3005401924100 kN187

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