SIFT BEARING STORE CATALOG

K399-A-394-AFAGTapered Roller

K399-A-394-A is a FAG tapered roller bearing, bore 68.26 mm, O.D. 110 mm, width 22 mm. Dimensions, drawing, interchanges and price.

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Bore d68.26mm
Outside dia. D110mm
Width B22mm
Dynamic Cr86kN
Static C0r115kN
Limiting speed6,600rpm
Weight0.781kg
Cr / C0r0.75
Mean dia. dm89.1mm

Original catalogue drawing - FAG Schaeffler HR 1, page 624

K399-A-394-A FAG Tapered 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. D110 mmBore d68.26 mmWidth B22 mmCup width C18.82 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 diameter68.2632.6875
DOutside diameter1104.3307
BInner-ring / bearing width21.9960.866
TOverall assembly width220.8661
CCup / outer-ring width18.8240.7411

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)68.263
Outside dia. D (mm)110
Width B (mm)21.996
Overall width T (mm)22
Cup width C (mm)18.824
Inner-ring OD d1 (mm)88.1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)19334
Basic static load rating Cor (lbs)25853
Basic dynamic load rating Cr (N)86000
Basic static load rating C0r (N)115000
Basic dynamic axial rating Ca (N)5
Fatigue limit load Cur (N)13700
Factor e0.4
Factor Y1.49
Factor Y00.82
Limiting speed nG (rpm)6,600
Effective load centre a (mm)21

Weight

Weight (kg)0.781

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)2.3
Shaft shoulder da (mm)74
Shaft shoulder db (mm)78
Housing shoulder Da (mm)101
Housing shoulder Db (mm)104.5
Housing fillet ra max (mm)2.3
Fillet rb max (mm)1.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 2,200 rpm
421,500102770
614,3333922,973
810,7501,0247,758
108,6002,15416,321
155,7338,32363,057

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 86,000 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.624 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
399A/393TimkenTapered Roller68.2611022--
399A/394ATimkenTapered Roller68.261102298.9 kN0.75
399AS/394ATimkenTapered Roller68.261102298.9 kN0.73

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
K399-AS-394-AFAGTapered Roller68.261102286 kN0.781

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
K399-AS-394-AFAGTapered Roller68.261102286 kN0.781

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
K33275-33462FAGTapered Roller69.85117.4730.16124 kN1.21
K47487-47420FAGTapered Roller69.8512032.55152 kN1.53
K482-472FAGTapered Roller69.8512029.01112 kN1.32
K566-563FAGTapered Roller69.8512736.17168 kN1.95
KH913849-H913810FAGTapered Roller69.85146.0539.69201 kN2.96
KLM613449-LM613410FAGTapered Roller69.85112.712285 kN0.798
K395-A-394-AFAGTapered Roller66.671102286 kN0.855
K395-S-394-AFAGTapered Roller66.671102286 kN0.801

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