5. Before pulling off any parts that have been screwed on, replace two of the fixing screws at
the top with excessively long screws or threaded bolts. This ensures that the part is
supported after it is pulled off.
6. Use forcing-off bolts or suitable devices to disassemble parts and components attached to
the motor shaft.
9.2.3 Removing rolling-contact bearings
● When removing rolling-contact bearings, ensure the parts are correctly allocated if they are
the same size at the drive end and non-drive end. This affects the bearings, compression
springs, equalizing rings, and covers with different centering lengths.
● Label the components as they are removed so that they can be correctly allocated during
assembly.
9.2.4 Installing the machine
● If possible, assemble the motor on an aligning plate. This ensures that the brush rocker is
positioned correctly relative to the stator frame and the footings lie on a plane.
● When mounting the DE bearing shield, ensure that the windings that project from the stator
housing do not become damaged.
Sealing the motor
● Clean bare joints between parts, e.g. between enclosures, end shields and the active parts
of bearings.
● Grease the uncoated joints.
● For more stringent degree of protection requirements, a joint sealant is often used. In this
case, also seal the joints with a suitable silicone-free, non-setting sealing compound during
assembly. Use the sealing compound when inserting the relevant fixing screws.
● Check the installed sealing elements. If the sealing elements do not seal sufficiently,
replace them.
Bolt locking elements
● Refit nuts or bolts that are mounted together with locking, resilient, and/or force-distributing
elements with identical, fully-functional elements when re-assembling. The force
distributing element include, for example, lock washers, split rings, etc.
● Always replace keyed safety elements.
● Always mount the fixing screws with a clamping length < 25 mm during assembly using
suitable locking elements or a soluble threadlocker. For example, use split rings, spring
washers, or LOCTITE. The clamping length is taken as the distance between the head of
the bolt and the point at which the bolt is screwed in.
Maintenance
9.2 Repair
SIMOTICS DC 1GG6
Operating Instructions 02/2016 97
To Next Page
Loading...
Need help?
General