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…Lubrication of a single part of power transmission is almost important as its design and construction…

Every information about lubrication should not be disconnected from application and real operating conditions, so below our suggestion due to our experience. For special applications, or any doubt, pls contact Carini Industria.

Note: it is necessary to check regularly for any leakage in order to maintain the correct gearbox functioning.
In general, gearbox lubrication is realized through:

– by slamming (oil bath);
– forced;

Slamming lubrication requires the correct fluid level (it means right filling) together with the right fluid type (oil or grease), depending on application (type, installation, speed, …), and gearbox type and size.

Forced lubrication needs for a separate and dedicated hydraulic circuit, that allows to renew the lubricant in the gearbox body. Normally this kind of lubrication is connected to heavy duty application, generally speed related.

Forced lubrication goal is to allow active lubrication even where internal centrifugal forces are against adhesion of lubricant: therefore, it is necessary to realize a little internal pressure inside the gearbox body through forced lubrication (max 4-5 bar).

In some cases, forced lubrication can also operate as per thermal exchange, but it is better to realize a stand alone cooling system.

In any case, slamming or forced lubrication, it could be necessary to use a breather plug, to avoid an excessive pressure and/or foam level in the gearbox body.

Below some factors that affect lubricant and type of lubrication choice (but not exhaustively):

– type of application;
– gearbox assembly position;
– operation (running hour/day, shocks presence);
– start-up (number per day);
– ambient temperature and gearbox body ventilation;
– operating speed;
– gearbox size and reduction ratio;
– gearbox temperature (also estimated);

For this purpose, pls refer to our catalogue for more detailed info such as dimensions, capacities, operating diagrams or following this link.

NOTE: even in case of a too low speed of the gearbox, together with mounting position, it will be necessary for forced lubrication, and/or other precautions.
In case of no info, when ordering, we consider for application with standard mounting position (horizontal shafts) and oil bath lubrication.