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639 Miniature Bearing
Dimensions: Bore (Inner) Diameter: 9 mm； Outer Diameter: 30 mm； Width (Thickness): 10 mm;

639
Slewing Bearings of similar size
same inner diameter
same outer diameter
same width
Product Attributes
Bearing Type Ball
For Load Direction Radial
Construction Single Row
Seal Type Open
Part Number 639
For Shaft Diameter 9mm
Bore Dia (d) 9 mm
Bore Dia Tolerance -0.008mm to 0
For Housing ID 30mm
Outer Dia (D) 30mm
Outer Dia Tolerance -0.008mm to 0
Width (B) 10mm
Width Tolerance -0.12mm to 0
Ring Material 52100 Chrome steel
Ball Material 52100 Chrome steel
Cage Material 300 Series Stainless Steel
Shield Material 300 Series Stainless Steel
Dynamic Load Rating (Cr) (Newtons) 3960
Static Load Rating (Cor) (Newtons) 1664
Max Speed (Grease) (X1000 RPM) 24
Max Speed (Oil) (X1000 RPM)  30
Lubrication Required
Shaft Mount Type Press Fit
Temperature Range -30° to 110 °C
ABEC Rating ABEC-1
Radial Clearance Trade No. C0
Radial Clearance 0.002mm to 0.013mm
RoHS Compliant
Ball Qty 7
Ball Dia 4.7620mm
Weight (grams) 36.2
639
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