Rolling bearing
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Angular contact ball bearings are usually installed in pairs; for the bearing model 7312B/DB, assuming that the cage is made of brass, is it exactly the same as the 7312BECBM model? Can it be used as a substitute?
The 7312B/DB is installed in a back-to-back configuration. The 7312BECBM can be arranged back-to-back, face-to-face, or in series, but its cage is made of lightweight alloy. The brass one is MP.
Got it; the 7312B/DB back-to-back installation refers to the method of installation. 7312BECBM refers to the specific details of the bearing.
The 7312B/DB can only be installed in a back-to-back configuration; the manufacturer of the 7312BECBM refers to it as a universal fitting
When installing 7312BECB, the outer ring is not pre-tightened and has a gap
The BDB is a single unit, while the ERP unit comes as a set; it actually consists of two bearings that are installed back to back. BECBM is a single bearing; the ERP unit is per piece. Two bearings need to be installed simultaneously during installation, usually in a back-to-back configuration.
Installed back to back; for lubrication, that is, with the ends facing each other