SIFT BEARING STORE CATALOG

30303NSKTapered Roller

30303 is a NSK tapered roller bearing, bore 17 mm, O.D. 47 mm, width 14 mm, dynamic rating 27 kN. Dimensions, drawing, interchanges and price.

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Bore d17mm
Outside dia. D47mm
Width B14mm
Dynamic Cr27kN
Static C0r20.3kN
Limiting speed8,000rpm
Weight0.129kg
Cr / C0r1.33
Mean dia. dm32mm

Original catalogue drawing - NSK E1103, page 261

30303 NSK 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. D47 mmBore d17 mmWidth B14 mmCup width C10.5 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 diameter170.6693
DOutside diameter471.8504
BInner-ring / bearing width140.5512
TOverall assembly width15.250.6004
CCup / outer-ring width10.50.4134
rChamfer (min)10.0394

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)17
Outside dia. D (mm)47
Width B (mm)14
Overall width T (mm)15.25
Cup width C (mm)10.5

Load ratings & speeds

Basic dynamic load rating Cr (lbs)6070
Basic static load rating Cor (lbs)4564
Basic dynamic load rating Cr (N)27000
Basic static load rating C0r (N)20300
Limiting speed - grease (rpm)8,000

Weight

Weight (kg)0.129

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)1

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 2,600 rpm
46,750102651
64,5003922,516
83,3751,0246,564
102,7002,15413,810
151,8008,32353,356

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 27,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandNSK
Source catalogueNSK CAT. No. E1103 (metric)
Catalogue pagep.261 (dimensions)

Load ratings in newtons, weights in kg, limiting speeds for grease and oil lubrication.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
1303-TVHFAGBall17471412.9 kN0.065
6303FAGBall17471413.4 kN0.114
6303-2RSRFAGBall17471413.4 kN0.118
6303-2ZFAGBall17471413.4 kN0.117
6303-CFAGBall17471415 kN0.107
6303-C-2BRSFAGBall17471415 kN0.111
6303-C-2HRSFAGBall17471415 kN0.111
6303-C-2ZFAGBall17471415 kN0.067
QJ303-XL-MPAFAGBall17471424.5 kN0.148
S6303FAGBall17471413.4 kN0.111

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
1303NSKBall1747142,810 lbs0.136
6303NSKBall1747143,060 lbs0.113
7303BNSKBall1747143,110 lbs0.118
HR30303NSKTapered Roller17471436 kN0.134
HR30303JNSKTapered Roller1747146,560 lbs0.136
7303NSKPrecision / Angular Contact17471417.5 kN0.116

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
32303NSKTapered Roller1747197,530 lbs0.177
HR30203NSKTapered Roller17401224.8 kN0.079
HR30203JNSKTapered Roller1740124,520 lbs0.077
HR30303NSKTapered Roller17471436 kN0.134
HR30303JNSKTapered Roller1747146,560 lbs0.136
HR32203JNSKTapered Roller1740166,090 lbs0.104
HR32303NSKTapered Roller17471946 kN0.178
A6067/A6157NSKTapered Roller16.9939.9911.153,360 lbs0.073

Request a quotation for 30303

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