SIFT BEARING STORE CATALOG

7303NSKPrecision / Angular Contact

7303 is a NSK precision / angular contact bearing, bore 17 mm, O.D. 47 mm, width 14 mm. Dimensions, drawing, interchanges and price.

Request a quoteEmail usSearch the catalog
Bore d17mm
Outside dia. D47mm
Width B14mm
Dynamic Cr17.5kN
Static C0r8.65kN
Limiting speed11,000rpm
Weight0.116kg
Cr / C0r2.02
Mean dia. dm32mm

Original catalogue drawing - NSK E1103, page 210

7303 NSK Precision / Angular Contact 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)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

Load ratings & speeds

Basic dynamic load rating Cr (lbs)3934
Basic static load rating Cor (lbs)1945
Basic dynamic load rating Cr (N)17500
Basic static load rating C0r (N)8650
Limiting speed - grease (rpm)11,000
Limiting speed - oil (rpm)15,000
Effective load centre a (mm)16.2

Weight

Weight (kg)0.116

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)1
Chamfer r1 min (mm)0.6

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 3,000 rpm
44,37564356
62,9172161,200
82,1885122,844
101,7501,0005,556
151,1673,37518,750

Basic rating life per ISO 281: L10 = (C/P)3 with C = 17,500 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.210 (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
30303NSKTapered Roller17471427 kN0.129
HR30303NSKTapered Roller17471436 kN0.134
HR30303JNSKTapered Roller1747146,560 lbs0.136

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
17BGR10HNSKPrecision / Angular Contact1735101,010 lbs0.036
17BGR10SNSKPrecision / Angular Contact1735101,010 lbs0.036
17TAC47BNSKPrecision / Angular Contact174715--
5203NSKPrecision / Angular Contact174017.516.1 kN0.1
5203AZZNSKPrecision / Angular Contact174017.514 kN0.1
5303NSKPrecision / Angular Contact174722.223.1 kN0.18
5303AZZNSKPrecision / Angular Contact174722.221.6 kN0.18
7003NSKPrecision / Angular Contact1735107 kN0.04

Request a quotation for 7303

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.