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639

Extra Small Ball Bearings and Miniature Ball Bearings
Extra Small Ball Bearings and Miniature Ball Bearings

Product Information

Designations

639

Boundary Dimensions

d 9 mm
D 30 mm
B 10 mm
r (min.） 0.6 mm

Basic Load Ratings

Cr 5600 N Basic dynamic load rating
C0r 2390 N Basic static load rating

Speeds

Grease 24000 min-1
Oil 30000 min-1

Dimensions

Abutment and Fillet Dimensions

da (min.) 13 mm
Da(max.) 26 mm
ra (max.) 0.6 mm

Calculation factors

Additional information

Z 8
DW 4.762 mm

Mass

(approx.) 0.0365 kg