SIFT BEARING STORE CATALOG

31311-XLFAGTapered Roller

31311-XL is a FAG tapered roller bearing, bore 55 mm, O.D. 120 mm, width 29 mm, dynamic rating 145 kN. Dimensions, drawing, interchanges and price.

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Bore d55mm
Outside dia. D120mm
Width B29mm
Dynamic Cr145kN
Static C0r139kN
Limiting speed6,500rpm
Weight1.75kg
Cr / C0r1.04
Mean dia. dm87.5mm

Original catalogue drawing - FAG Schaeffler HR 1, page 594

31311-XL 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. D120 mmBore d55 mmWidth B29 mmCup width C21 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 diameter552.1654
DOutside diameter1204.7244
BInner-ring / bearing width291.1417
TOverall assembly width31.51.2402
CCup / outer-ring width210.8268

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)55
Outside dia. D (mm)120
Width B (mm)29
Overall width T (mm)31.5
Cup width C (mm)21
Inner-ring OD d1 (mm)88.5

Load ratings & speeds

Basic dynamic load rating Cr (lbs)32597
Basic static load rating Cor (lbs)31248
Basic dynamic load rating Cr (N)145000
Basic static load rating C0r (N)139000
Basic dynamic axial rating Ca (N)4
Fatigue limit load Cur (N)21000
Factor e0.83
Factor Y0.73
Factor Y00.4
Limiting speed nG (rpm)6,500
Reference speed nB (rpm)4,100
Effective load centre a (mm)39

Weight

Weight (kg)1.75

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)2.5
Shaft shoulder da (mm)68
Shaft shoulder db (mm)65
Housing shoulder Da (mm)94
Housing shoulder Db (mm)113
Housing fillet ra max (mm)2.5
Fillet rb max (mm)2

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 2,100 rpm
436,250102806
624,1673923,115
818,1251,0248,127
1014,5002,15417,099
159,6678,32366,059

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 145,000 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.594 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
1311NSKBall551202911,500 lbs1.642
6311NSKBall551202916,100 lbs1.352
7311BNSKBall551202916,800 lbs1.52
BL311NSKBall551202919,900 lbs1.465
311NSKCylindrical Roller551202924,900 lbs1.451
NU311ENSKCylindrical Roller5512029169 kN1.64
21311EAE4NSKSpherical Roller5512029178 kN1.58
HR30311NSKTapered Roller5512029184 kN1.63
HR30311JNSKTapered Roller551202933,700 lbs1.628
HR31311NSKTapered Roller5512029161 kN1.58

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
1311-K-TVH-C3FAGBall551202952 kN1.55
1311-TVHFAGBall551202952 kN1.57
6311FAGBall551202976.5 kN1.39
6311-2RSRFAGBall551202976.5 kN1.43
6311-2ZFAGBall551202976.5 kN1.43
6311-CFAGBall551202983 kN1.33
6311-C-2BRSFAGBall551202983 kN1.38
6311-C-2HRSFAGBall551202983 kN1.37

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
31311-AFAGTapered Roller5512029122 kN1.57
31311-A-N11CA-A80-120FAGTapered Roller55120None209 kN3.4

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30211-AFAGTapered Roller551002191 kN0.92
30211-XLFAGTapered Roller5510021109 kN0.728
30311-AFAGTapered Roller5512029151 kN1.8
30311-XLFAGTapered Roller5512029180 kN1.63
32011-XFAGTapered Roller55902379 kN0.64
32011-X-XLFAGTapered Roller55902396 kN0.57
32211-AFAGTapered Roller5510025110 kN0.87
32211-B-XLFAGTapered Roller5510025124 kN0.88

Request a quotation for 31311-XL

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