Page 31 - Y-bearing-units

Speeds

The speed at which a Y-bearing or a Y-bearing 1
unit can operate depends mainly on:
• the method used to attach it to the shaft
• the sealing arrangement
For Y-bearings that are locked onto a shaft with
grub screws or an eccentric locking collar, the
permissible speed of the bearing is determined
by its fit on the shaft. The looser the fit, the
lower the speed.
If a Y-bearing is mounted on an adapter
sleeve, with an interference fit (bearings in the
17262(00) or 17263(00) series), or with SKF
ConCentra locking, the permissible speed is
much higher than if another locating method is
used. Their concentric fit also provides a low
vibration level and quiet running († chapter
Speeds, starting on page 38).
Because of the relubrication requirements
in applications with relatively high speeds
(† chapter Lubrication and maintenance,
starting on page 48), SKF recommends using
Y-bearing units that can be relubricated.

Application note
Because of their special properties, SKF Y-bearing
units are used in applications in virtually every
industry. If however, they are to be used in an
application where health, safety, or the envir on-
ment is at risk, the SKF application engineering
service should be contacted during the design
phase.
This is also true for applications with relatively
high speeds and where machine downtime can
cause significant problems.

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