SIFT BEARING STORE CATALOG

7203NSKPrecision / Angular Contact

7203 is a NSK precision / angular contact bearing, bore 17 mm, O.D. 40 mm, width 12 mm. Dimensions, drawing, interchanges and price.

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Bore d17mm
Outside dia. D40mm
Width B12mm
Dynamic Cr11.9kN
Static C0r6kN
Limiting speed16,000rpm
Weight0.067kg
Cr / C0r1.98
Mean dia. dm28.5mm

Original catalogue drawing - NSK E1103, page 210

7203 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. D40 mmBore d17 mmWidth B12 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 diameter401.5748
BInner-ring / bearing width120.4724
rChamfer (min)0.60.0236

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)40
Width B (mm)12

Load ratings & speeds

Basic dynamic load rating Cr (lbs)2675
Basic static load rating Cor (lbs)1349
Basic dynamic load rating Cr (N)11900
Basic static load rating C0r (N)6000
Limiting speed - grease (rpm)16,000
Limiting speed - oil (rpm)22,000
Effective load centre a (mm)14.2

Weight

Weight (kg)0.067

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)0.6
Chamfer r1 min (mm)0.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 3,000 rpm
42,97564356
61,9832161,200
81,4885122,844
101,1901,0005,556
157933,37518,750

Basic rating life per ISO 281: L10 = (C/P)3 with C = 11,900 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
1203-TVHFAGBall1740128.1 kN0.073
6203FAGBall1740129.5 kN0.065
6203-2RSRFAGBall1740129.5 kN0.067
6203-2ZFAGBall1740129.5 kN0.067
6203-CFAGBall17401210.4 kN0.062
6203-C-2BRSFAGBall17401210.4 kN0.065
6203-C-2HRSFAGBall17401210.4 kN0.067
6203-C-2ZFAGBall17401210.4 kN0.067
S6203FAGBall1740129.5 kN0.065
S6203-2RSRFAGBall1740129.5 kN0.067

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
1203NSKBall1740121,800 lbs0.073
6203NSKBall1740122,150 lbs0.064
7203BNSKBall1740122,090 lbs0.068
HR30203NSKTapered Roller17401224.8 kN0.079
HR30203JNSKTapered Roller1740124,520 lbs0.077
7203A5NSKPrecision / Angular Contact1740122,360 lbs0.064
7203CNSKPrecision / Angular Contact1740122,450 lbs0.064

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 7203

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.