Bird Precision
Bird Precision
One Spruce Street, P.O. Box 540569
Waltham, MA 02454-0569 USA
Phone: (800) 454-7369
Fax: (800) 370–6308
Email: sales@birdprecision.com
Website: www.birdprecision.com
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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 75 Degree Angle

Vee Depth at 75 Degree Angle

Angle

Outside Diameter at 75 Degree Angle

RB05001 N/A 0.003 in N/A 0.015 in N/A 75 º85 º N/A 0.049 in
RB05002 N/A 0.003 in N/A 0.017 in N/A 75 º85 º N/A 0.0485 in
RB05007 N/A 0.004 in N/A 0.01 in N/A 75 º85 º N/A 0.0485 in
RB05101 N/A 0.003 in N/A 0.015 in N/A 75 º80 º N/A 0.0485 in
RB05117 N/A N/A N/A 70 º80 º N/A
RB05703 N/A 0.004 in N/A 0.017 in N/A 75 º85 º N/A 0.0485 in
RB07001 N/A 0.003 in N/A 0.015 in N/A 75 º80 º N/A 0.066 in
RB07135 N/A 0.002 in N/A 0.012 in N/A 75 º85 º N/A 0.066 in
RB07503 N/A 0.005 in N/A 0.025 in N/A 75 º85 º N/A 0.074 in
RB07506 N/A N/A N/A 80 º90 º N/A
RB08002 N/A N/A N/A 90 º100 º N/A
RB09004 N/A N/A N/A 85 º95 º N/A
RB09005 N/A N/A N/A 95 º100 º N/A
RB10503 N/A N/A N/A 80 º95 º N/A
RB10505 N/A 0.002 in N/A 0.032 in N/A 75 º85 º N/A 0.104 in
RB11502 N/A N/A N/A 100 º105 º N/A
Unit of Measure
1