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Vee bearings are available in sapphire, ruby, hard Pyrex glass and tungsten carbide materials.

Vee and cup type jewel bearings afford one of the lowest coefficient of friction in the miniature instrument bearing field. (Approximately 0.12 steel on sapphire) Several reasons account for this. Foremost, vee bearings provide point contact with the moving shaft element. Other miniature bearing types have line contact. Secondarily, the sapphire and glass materials offer low elastic deformation characteristics.
Vee Jewel Bearings
Vee Jewel Nomenclature
Unit of Measure
1 

Item #

Vee Radius at 80 Degree Angle

Vee Depth at 80 Degree Angle

Angle

Outside Diameter at 80 Degree Angle

RB21001 N/A N/A N/A 85 º95 º N/A
RB21015 N/A N/A N/A 60 º75 º N/A
RB21002 N/A 0.003 in N/A 0.01 in N/A 80 º85 º N/A 0.0394 in
RB21125 N/A 0.0012 in N/A 0.0142 in N/A 80 º88 º N/A 0.0469 in
RB21126 N/A 0.0024 in N/A 0.0142 in N/A 80 º88 º N/A 0.0469 in
RB21127 N/A 0.0031 in N/A 0.0142 in N/A 80 º88 º N/A 0.0469 in
RB21008 N/A 0.003 in N/A 0.015 in N/A 80 º85 º N/A 0.0488 in
RB21009 N/A N/A N/A 75 º85 º N/A
RB21011 N/A 0.005 in N/A 0.015 in N/A 80 º85 º N/A 0.0487 in
RB21014 N/A 0.004 in N/A 0.018 in N/A 80 º95 º N/A 0.059 in
RB21019 N/A N/A N/A 75 º85 º N/A
RB21021 N/A N/A N/A 75 º85 º N/A
RB21027 N/A N/A N/A 75 º85 º N/A
RB21062 N/A N/A N/A 100 º110 º N/A
Unit of Measure
1