Parker Compumotor OEM350, Руководство пользователя

Страница: 30 / 58

23
OEM650/OEM650X • INSTALLATION
Couplings
The motor and load should be aligned as accurately as possible. Any
misalignment may degrade your system’s performance.
There are
three types of shaft couplings: single-flex, double-flex, and rigid.
Like a hinge, a single-flex coupling accepts angular misalignment
only. A double-flex coupling accepts both angular and parallel
misalignments. Both single-flex and double-flex, depending on their
design, may or may not accept end-play. A rigid coupling cannot
compensate for any misalignment.
Single-Flex Coupling
When a single-flex coupling is used, one and only one of the shafts
must be free to move in the radial direction without constraint.
Do
not use a double-flex coupling in this situation; it will allow too
much freedom and the shaft will rotate eccentrically, which
will cause large vibrations and immediate failure.
Double-Flex Coupling
Use a double-flexed coupling whenever two shafts are joined that are
fixed in the radial and angular direction (angular misalignment).
Do
not use a single-flex coupling with a parallel misalignment;
this will bend the shafts, causing excessive bearing loads and
premature failure
.
Rigid Coupling
Rigid couplings are generally not recommended. They should be
used only if the motor is on some form of floating mounts, which
allow for alignment compensation.