SIFT BEARING STORE CATALOG

31330-XFAGTapered Roller

31330-X is a FAG tapered roller bearing, bore 150 mm, O.D. 320 mm, width 75 mm, dynamic rating 790 kN. Dimensions, drawing, interchanges and price.

Request a quoteEmail usSearch the catalog
Bore d150mm
Outside dia. D320mm
Width B75mm
Dynamic Cr790kN
Static C0r1040kN
Limiting speed2,200rpm
Weight28kg
Cr / C0r0.76
Mean dia. dm235mm

Original catalogue drawing - FAG Schaeffler HR 1, page 488

31330-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. D320 mmBore d150 mmWidth B75 mmCup width C50 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 diameter1505.9055
DOutside diameter32012.5984
BInner-ring / bearing width752.9528
TOverall assembly width823.2283
CCup / outer-ring width501.9685

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)150
Outside dia. D (mm)320
Width B (mm)75
Overall width T (mm)82
Cup width C (mm)50
Inner-ring OD d1 (mm)237

Load ratings & speeds

Basic dynamic load rating Cr (lbs)177599
Basic static load rating Cor (lbs)233801
Basic dynamic load rating Cr (N)790000
Basic static load rating C0r (N)1.04e+06
Basic dynamic axial rating Ca (N)9
Fatigue limit load Cur (N)115000
Factor e0.83
Factor Y0.73
Factor Y00.4
Limiting speed nG (rpm)2,200
Reference speed nB (rpm)1,760
Effective load centre a (mm)100

Weight

Weight (kg)28.0

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)5
Shaft shoulder da (mm)181
Shaft shoulder db (mm)168
Housing shoulder Da (mm)302
Housing shoulder Db (mm)300
Housing fillet ra max (mm)5
Fillet rb max (mm)4

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 700 rpm
4197,5001022,419
6131,6673929,345
898,7501,02424,381
1079,0002,15451,296
1552,6678,323198,178

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 790,000 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.488 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
HR31330NSKTapered Roller15032075975 kN28.5
31330XTimkenTapered Roller15032075862 kN28.15

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
31330-X-XLFAGTapered Roller15032075930 kN27.8

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
31330-X-XLFAGTapered Roller15032075930 kN27.8

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30230-AFAGTapered Roller15027045475 kN11.1
30230-XLFAGTapered Roller15027045550 kN10.9
30330-AFAGTapered Roller15032065810 kN25.1
32030-XFAGTapered Roller15022548385 kN6.47
32030-X-XLFAGTapered Roller15022548455 kN6.5
32030-X-XL-DF-A120-170FAGTapered Roller150225None780 kN13.5
32030-X-XL-DF-A280-330FAGTapered Roller150225None780 kN13.5
32230-AFAGTapered Roller15027073740 kN18.5

Request a quotation for 31330-X

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.