SIFT BEARING STORE CATALOG

61808FAGBall

61808 is a FAG ball bearing, bore 40 mm, O.D. 52 mm, width 7 mm, dynamic rating 4.9 kN. Dimensions, drawing, interchanges and price.

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Bore d40mm
Outside dia. D52mm
Width B7mm
Dynamic Cr4.9kN
Static C0r3.75kN
Limiting speed19,300rpm
Weight0.035kg
Cr / C0r1.31
Mean dia. dm46mm

Original catalogue drawing - FAG Schaeffler HR 1, page 250

61808 FAG Ball 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. D52 mmBore d40 mmWidth B7 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 diameter401.5748
DOutside diameter522.0472
BInner-ring / bearing width70.2756
rChamfer (min)0.30.0118

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)40
Outside dia. D (mm)52
Width B (mm)7
Inner-ring OD d1 (mm)43.2
Inner-ring shoulder dia. D1 (mm)48.1

Load ratings & speeds

Basic dynamic load rating Cr (lbs)1102
Basic static load rating Cor (lbs)843
Basic dynamic load rating Cr (N)4900
Basic static load rating C0r (N)3750
Fatigue limit load Cur (N)191
Factor f014.6
Limiting speed nG (rpm)19,300

Weight

Weight (kg)0.035

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)0.3
Shaft shoulder da (mm)42
Housing shoulder Da (mm)50
Housing fillet ra max (mm)0.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 3,000 rpm
41,22564356
68172161,200
86125122,844
104901,0005,556
153273,37518,750

Basic rating life per ISO 281: L10 = (C/P)3 with C = 4,900 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.250 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
6808NSKBall405271,100 lbs0.032

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
61808-2RSRFAGBall405274.9 kN0.035
61808-2ZFAGBall405274.9 kN0.034
71808-B-TVHFAGPrecision / Angular Contact405276.3 kN0.033

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
61808-2RSRFAGBall405274.9 kN0.035
61808-2ZFAGBall405274.9 kN0.034

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
11208-TVHFAGBall40801819.4 kN0.722
1208-K-TVH-C3FAGBall40801819.4 kN0.408
1208-TVHFAGBall40801819.4 kN0.414
1308-K-TVH-C3FAGBall40902330 kN0.698
1308-TVHFAGBall40902330 kN0.708
16008FAGBall4068913.2 kN0.12
2208-2RS-TVHFAGBall40802319.4 kN0.528
2208-K-2RS-TVH-C3FAGBall40802319.4 kN0.517

Request a quotation for 61808

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.