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SM 61921 C TA Angular Contact Bearing

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Part Number SM 61921 C TA
Series SM
Bearing Type Angular Contact
GMN's S series angular contact bearing dimension drawing. Drawing of bearing dimensions with blue lines indicating diameter measurements corresponding to numbers in the data tables.


Bore Diameter d [mm] 105
Outer Diameter D [mm] 145
Width B [mm] 20
Pitch Circle Diameter dm [mm] 125
Ball Diameter Dw [mm] 11.910
OD Inner Ring d1 [mm] 117.800
ID Outer Ring D1 [mm] 132.200
ID Outer Ring - Open Side D2 [mm] 137
Chamfer r1,2 [mm] 0.600
Chamfer - Open Side r3,4 [mm] 0.600


Limiting Speed: Oil Lub. noil [RPM] 16,000
Limiting Speed: Grease Lub. ngrease [RPM] 12,000
Dynamic Radial Load Rating C [N] 38,500
Static Radial Load Rating - Steel Balls C0 [N] 32,500
Static Radial Load Rating - Si3N4 Balls C0 HY [N] 22,700

Geometric Data

Number of Balls Z [qty] 26
Contact Angle a0 [°] 19
Bearing Weight m [kg] 0.830

Mating Part Dimensions

Chamfer Associated Component ra max [mm] 0.600
Chamfer Associated Component - Open Side rb max [mm] 0.600
Abutment Diameter Inner Ring da min [mm] 112
Abutment Diameter Outer Ring Da max [mm] 138

Bearing Preload Data

Light Pre-Load Fv [N] 200
Light Axial Rigidity Cax [N/µm] 112
Medium Pre-Load Fv [N] 590
Medium Axial Rigidity Cax [N/µm] 166
Heavy Pre-Load Fv [N] 1,170
Heavy Axial Rigidity Cax [N/µm] 218
Minimum Spring Pre-Load Ff [N] 1,470
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