SIFT BEARING STORE CATALOG

K72212-72487FAGTapered Roller

K72212-72487 is a FAG tapered roller bearing, bore 53.98 mm, O.D. 123.83 mm, width 32.79 mm. Dimensions, drawing, interchanges and price.

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Bore d53.98mm
Outside dia. D123.83mm
Width B32.79mm
Dynamic Cr135kN
Static C0r150kN
Limiting speed6,000rpm
Weight1.98kg
Cr / C0r0.9
Mean dia. dm88.9mm

Original catalogue drawing - FAG Schaeffler HR 1, page 620

K72212-72487 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. D123.83 mmBore d53.98 mmWidth B32.79 mmCup width C25.4 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 diameter53.9752.125
DOutside diameter123.8254.875
BInner-ring / bearing width32.7911.291
TOverall assembly width36.5121.4375
CCup / outer-ring width25.41

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)53.975
Outside dia. D (mm)123.825
Width B (mm)32.791
Overall width T (mm)36.512
Cup width C (mm)25.4
Inner-ring OD d1 (mm)86.8

Load ratings & speeds

Basic dynamic load rating Cr (lbs)30349
Basic static load rating Cor (lbs)33721
Basic dynamic load rating Cr (N)135000
Basic static load rating C0r (N)150000
Basic dynamic axial rating Ca (N)3.5
Fatigue limit load Cur (N)17900
Factor e0.74
Factor Y0.81
Factor Y00.45
Limiting speed nG (rpm)6,000
Effective load centre a (mm)38

Weight

Weight (kg)1.98

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)3.6
Shaft shoulder da (mm)67
Shaft shoulder db (mm)79
Housing shoulder Da (mm)102
Housing shoulder Db (mm)116
Housing fillet ra max (mm)3.6
Fillet rb max (mm)3.2

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 2,000 rpm
433,750102847
622,5003923,271
816,8751,0248,533
1013,5002,15417,954
159,0008,32369,362

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 135,000 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.620 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
72212/72487TimkenTapered Roller53.98123.8332.79-1.94
72212C/72487TimkenTapered Roller53.98123.8332.79214 kN2.03
72213C/72487TimkenTapered Roller53.98123.8332.79214 kN2.05

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
K33895-33822FAGTapered Roller53.9895.2528.57107 kN0.806
KHM807049-HM807010FAGTapered Roller53.98104.7836.51145 kN1.42
KLM806649-LM806610FAGTapered Roller53.9888.919.0559 kN0.445
KLM806649-LM806610-XLFAGTapered Roller53.9888.919.0569 kN0.434
KHM807048-HM807010FAGTapered Roller54.49104.7836.51145 kN1.41
30211-AFAGTapered Roller551002191 kN0.92
30211-XLFAGTapered Roller5510021109 kN0.728
30311-AFAGTapered Roller5512029151 kN1.8

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