TECO MOTOVARIO PBH Series, Instructions For Installation, Use And Maintenance Manual, Page: 17 / 56

8. SPECIFIC ASSEMBLING
8.1 OUTPUT SHAFT CONNECTIONS
8.1.1 Solid shaft
Before going ahead with the assembly of the elements, carefully clean the contact surfaces and grease them to reduce the
risk of seizure and contact oxidation.
It is essential to assemble and disassemble the connecting parts to the shafts with the help of tie rods and extractors,
using the threaded hole at the top of the shaft end and avoiding shocks and blows that may damage bearings, spring
rings or other components, please refer to Fig. 1, 2 and 3.
Rotating elements with an external peripheral speed greater than 20 m/s must be dynamically balanced.
In all cases where the ingoing and/or outgoing movement is operated by external transmissions (belt and pulley, chains,
gears…), ensure that:
The resulting radial and axial loads do not exceed the limit values indicated on the gear reducer’s plate. Loads beyond
those allowed result in premature wear and failures, as well as overheating of the gear reducer and bearings;
The chain transmissions, in particular, are not preloaded and that in case of linear speeds exceeding 1 m/s, they are
kept at the right tension by special tensioners;
See the information supplied by the following figures 1-2-3.
Fig. 1 Example of correct installation of a part to the output shaft of a gear reducer. We recommend to avoid using
inadequate tools.
Always follow the instructions reported in the installation manual of the part to be mounted. Also make sure that it
is compatible with the environmental class in which it will be installed.
MHD reducers
QL0336
∕
REV.2
Instructions for installation, use and maintenance
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