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HY S 61903 E TA Angular Contact Bearing

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Part Number HY S 61903 E TA
Series S
Bearing Type Angular Contact


Bore Diameter d [mm] 17
Outer Diameter D [mm] 30
Width B [mm] 7
Pitch Circle Diameter dm [mm] 23.50
Ball Diameter Dw [mm] 3.97
OD Inner Ring d1 [mm] 21
ID Outer Ring D1 [mm] 26.60
ID Outer Ring - Open Side D2 [mm] 27.70
Chamfer r1,2 [mm] 0.30
Chamfer - Open Side r3,4 [mm] 0.30


Limiting Speed: Oil Lub. noil [RPM] 76,250
Limiting Speed: Grease Lub. ngrease [RPM] 57,500
Dynamic Radial Load Rating C [N] 4,450
Static Radial Load Rating - Steel Balls C0 [N] 2,600
Static Radial Load Rating - Si3N4 Balls C0 HY [N] 1,810

Geometric Data

Number of Balls Z [qty] 14
Contact Angle a0 [°] 25
Bearing Weight m [kg] 0.02

Mating Part Dimensions

Chamfer Associated Component ra max [mm] 0.30
Chamfer Associated Component - Open Side rb max [mm] 0.10
Abutment Diameter Inner Ring da min [mm] 19.50
Abutment Diameter Outer Ring Da max [mm] 27.50

Bearing Preload Data

Light Pre-Load Fv [N] 40
Light Axial Rigidity Cax [N/µm] 49
Medium Pre-Load Fv [N] 120
Medium Axial Rigidity Cax [N/µm] 73
Heavy Pre-Load Fv [N] 240
Heavy Axial Rigidity Cax [N/µm] 96
Minimum Spring Pre-Load Ff [N] 165
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