SIFT BEARING STORE CATALOG

7303BNSKBall

7303B is a NSK ball bearing, bore 17 mm, O.D. 47 mm, width 14 mm, dynamic rating 3,110 lbs. Dimensions, drawing, interchanges and price.

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Bore d17mm
Outside dia. D47mm
Width B14mm
Dynamic Cr3,110lbs
Static C0r1,620lbs
Limiting speed13,000rpm
Weight0.118kg
Cr / C0r1.92
Mean dia. dm32mm

Original catalogue drawing - NSK catalogue, page 39

7303B NSK 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. D47 mmBore d17 mmWidth B14 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
rChamfer (min)0.9910.039

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
Bore d (in)0.6693
Outside dia. D (mm)47
Outside dia. D (in)1.8504
Width B (mm)14
Width B (in)0.5512

Load ratings & speeds

Basic dynamic load rating Cr (lbs)3110
Basic static load rating Cor (lbs)1620
Limiting speed - grease (rpm)13,000
Limiting speed - oil (rpm)17,000

Weight

Weight (kg)0.118

Mounting dimensions (fillets / shoulders)

Chamfer r (in)0.039
Shaft shoulder da min (in)0.906
Housing shoulder Da max (in)1.614

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 3,000 rpm
43,45864356
62,3062161,200
81,7295122,844
101,3831,0005,556
159223,37518,750

Basic rating life per ISO 281: L10 = (C/P)3 with C = 13,834 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandNSK
Source catalogueNSK inch product catalogue
Catalogue pagep.41 (dimensions) / p.42 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

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
30303NSKTapered Roller17471427 kN0.129
HR30303NSKTapered Roller17471436 kN0.134
HR30303JNSKTapered Roller1747146,560 lbs0.136
7303NSKPrecision / Angular Contact17471417.5 kN0.116

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
1203NSKBall1740121,800 lbs0.073
1303NSKBall1747142,810 lbs0.136
16003NSKBall173586.6 kN0.033
2203NSKBall1740162,200 lbs0.086
2303NSKBall1747193,210 lbs0.177
3203JNSKBall174017.52,880 lbs0.104
3303JNSKBall174722.24,520 lbs0.191
5203JNSKBall174017.53,290 lbs0.091

Request a quotation for 7303B

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