SIFT BEARING STORE CATALOG

31320-XFAGTapered Roller

31320-X is a FAG tapered roller bearing, bore 100 mm, O.D. 215 mm, width 51 mm, dynamic rating 385 kN. Dimensions, drawing, interchanges and price.

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Bore d100mm
Outside dia. D215mm
Width B51mm
Dynamic Cr385kN
Static C0r485kN
Limiting speed3,000rpm
Weight8.81kg
Cr / C0r0.79
Mean dia. dm157.5mm

Original catalogue drawing - FAG Schaeffler HR 1, page 484

31320-X 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. D215 mmBore d100 mmWidth B51 mmCup width C35 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 diameter1003.937
DOutside diameter2158.4646
BInner-ring / bearing width512.0079
TOverall assembly width56.52.2244
CCup / outer-ring width351.378

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)100
Outside dia. D (mm)215
Width B (mm)51
Overall width T (mm)56.5
Cup width C (mm)35
Inner-ring OD d1 (mm)159.5

Load ratings & speeds

Basic dynamic load rating Cr (lbs)86551
Basic static load rating Cor (lbs)109032
Basic dynamic load rating Cr (N)385000
Basic static load rating C0r (N)485000
Basic dynamic axial rating Ca (N)7
Fatigue limit load Cur (N)60000
Factor e0.83
Factor Y0.73
Factor Y00.4
Limiting speed nG (rpm)3,000
Reference speed nB (rpm)2,950
Effective load centre a (mm)68

Weight

Weight (kg)8.81

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)4
Shaft shoulder da (mm)121
Shaft shoulder db (mm)114
Housing shoulder Da (mm)201
Housing shoulder Db (mm)202
Housing fillet ra max (mm)4
Fillet rb max (mm)3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 1,000 rpm
496,2501021,693
664,1673926,542
848,1251,02417,067
1038,5002,15435,907
1525,6678,323138,724

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 385,000 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.484 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
HR31320NSKTapered Roller10021551475 kN9.02
31320XTimkenTapered Roller10021551416 kN8.76

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30220-AFAGTapered Roller10018034250 kN3.75
30220-A-DF-A180-220FAGTapered Roller100180None430 kN7.82
30220-A-DF-A220-270FAGTapered Roller100180None430 kN7.82
30220-A-DF-A250-280FAGTapered Roller100180None430 kN7.82
30220-XLFAGTapered Roller10018034295 kN3.76
30320-AFAGTapered Roller10021547420 kN8.3
32020-XFAGTapered Roller10015032174 kN1.94
32020-X-XLFAGTapered Roller10015032205 kN1.94

Request a quotation for 31320-X

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