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S 61911 C TA Angular Contact Bearing

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Part Number S 61911 C TA
Series S
Bearing Type Angular Contact


Bore Diameter d [mm] 55
Outer Diameter D [mm] 80
Width B [mm] 13
Pitch Circle Diameter dm [mm] 67.50
Ball Diameter Dw [mm] 7.14
OD Inner Ring d1 [mm] 63.10
ID Outer Ring D1 [mm] 71.90
ID Outer Ring - Open Side D2 [mm] 74.50
Chamfer r1,2 [mm] 1
Chamfer - Open Side r3,4 [mm] 0.30


Limiting Speed: Oil Lub. noil [RPM] 25,000
Limiting Speed: Grease Lub. ngrease [RPM] 18,500
Dynamic Radial Load Rating C [N] 18,400
Static Radial Load Rating - Steel Balls C0 [N] 17,100
Static Radial Load Rating - Si3N4 Balls C0 HY [N] 12,100

Geometric Data

Number of Balls Z [qty] 21
Contact Angle a0 [°] 15
Bearing Weight m [kg] 0.18

Mating Part Dimensions

Chamfer Associated Component ra max [mm] 0.60
Chamfer Associated Component - Open Side rb max [mm] 0.30
Abutment Diameter Inner Ring da min [mm] 60
Abutment Diameter Outer Ring Da max [mm] 75

Bearing Preload Data

Light Pre-Load Fv [N] 90
Light Axial Rigidity Cax [N/µm] 52
Medium Pre-Load Fv [N] 280
Medium Axial Rigidity Cax [N/µm] 87
Heavy Pre-Load Fv [N] 560
Heavy Axial Rigidity Cax [N/µm] 122
Minimum Spring Pre-Load Ff [N] 470
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