High-precision71913ac Angular Contact Ball Bearing
It includes the following types:
Double and single row angular contact ball bearings
Four-point contact ball bearings
Mounting
DB: mount in duplex, back to back
DF: mount in duplex, face to face
DT: mount in duplex, tandem
Internal structure:
C: normal contact angle a = 15°
AC: normal contact angle a = 25°
B: normal contact angle a = 40°
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