SIFT BEARING STORE CATALOG

HCB71903-E-T-P4SFAGPrecision / Angular Contact

HCB71903-E-T-P4S is a FAG precision / angular contact bearing, bore 17 mm, O.D. 30 mm, width 7 mm. Dimensions, drawing, interchanges and price.

High precision classHybrid ceramic balls
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Bore d17mm
Outside dia. D30mm
Width B7mm
Dynamic Cr3.45kN
Static C0r2.08kN
Limiting speed50,000rpm
Weight0.02kg
Cr / C0r1.66
Mean dia. dm23.5mm

Original catalogue drawing - FAG Schaeffler HR 1, page 294

HCB71903-E-T-P4S FAG 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. D30 mmBore d17 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 diameter170.6693
DOutside diameter301.1811
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)17
Outside dia. D (mm)30
Width B (mm)7

Load ratings & speeds

Basic dynamic load rating Cr (lbs)776
Basic static load rating Cor (lbs)468
Basic dynamic load rating Cr (N)3450
Basic static load rating C0r (N)2080
Fatigue limit load Cur (N)155
Limiting speed nG (rpm)50,000
Effective load centre a (mm)9

Weight

Weight (kg)0.02

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)0.3
Chamfer r1 min (mm)0.3
Shaft shoulder da (mm)20
Housing shoulder Da (mm)27.5
Housing fillet ra max (mm)0.3
Housing fillet ra1 max (mm)0.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 3,000 rpm
486264356
65752161,200
84315122,844
103451,0005,556
152303,37518,750

Basic rating life per ISO 281: L10 = (C/P)3 with C = 3,450 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.294 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
6903NSKBall173071,030 lbs0.018
7903A5NSKPrecision / Angular Contact173071,070 lbs0.018
7903CNSKPrecision / Angular Contact173071,120 lbs0.018

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
61903FAGBall173074.9 kN0.014
61903-2RSRFAGBall173074.9 kN0.02
61903-2ZFAGBall173074.9 kN0.017
B71903-C-T-P4SFAGPrecision / Angular Contact173075.3 kN0.017
B71903-E-T-P4SFAGPrecision / Angular Contact173075 kN0.017
HCB71903-C-T-P4SFAGPrecision / Angular Contact173073.6 kN0.02
HCS71903-C-T-P4SFAGPrecision / Angular Contact173072 kN0.017
HCS71903-E-T-P4SFAGPrecision / Angular Contact173071.9 kN0.017

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
HCB71903-C-T-P4SFAGPrecision / Angular Contact173073.6 kN0.02

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
3003-B-2RS-TVHFAGPrecision / Angular Contact1735149.1 kN0.055
3003-B-2RSR-TVHFAGPrecision / Angular Contact1735149.2 kN0.042
3003-B-2RZ-TVHFAGPrecision / Angular Contact1735149.1 kN0.057
3003-B-2Z-TVHFAGPrecision / Angular Contact1735149.2 kN0.042
3003-B-TVHFAGPrecision / Angular Contact1735149.1 kN0.042
3203-B-2RSR-TVHFAGPrecision / Angular Contact174017.514.6 kN0.095
3203-B-2Z-TVHFAGPrecision / Angular Contact174017.514.6 kN0.095
3203-B-TVHFAGPrecision / Angular Contact174017.514.6 kN0.093

Request a quotation for HCB71903-E-T-P4S

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.