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SM 61902 C TA Angular Contact Bearing

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Part Number SM 61902 C TA
Series SM
Bearing Type Angular Contact


Bore Diameter d [mm] 15
Outer Diameter D [mm] 28
Width B [mm] 7
Pitch Circle Diameter dm [mm] 21.50
Ball Diameter Dw [mm] 3.97
OD Inner Ring d1 [mm] 18.70
ID Outer Ring D1 [mm] 24.30
ID Outer Ring - Open Side D2 [mm] 25.40
Chamfer r1,2 [mm] 0.30
Chamfer - Open Side r3,4 [mm] 0.30


Limiting Speed: Oil Lub. noil [RPM] 93,000
Limiting Speed: Grease Lub. ngrease [RPM] 70,000
Dynamic Radial Load Rating C [N] 3,600
Static Radial Load Rating - Steel Balls C0 [N] 1,560
Static Radial Load Rating - Si3N4 Balls C0 HY [N] 1,100

Geometric Data

Number of Balls Z [qty] 13
Contact Angle a0 [°] 15
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] 17.50
Abutment Diameter Outer Ring Da max [mm] 25.50

Bearing Preload Data

Light Pre-Load Fv [N] 18
Light Axial Rigidity Cax [N/µm] 15
Medium Pre-Load Fv [N] 55
Medium Axial Rigidity Cax [N/µm] 24
Heavy Pre-Load Fv [N] 110
Heavy Axial Rigidity Cax [N/µm] 33
Minimum Spring Pre-Load Ff [N] 110
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