Gysin AG - Zahnräder, Antriebstechnik, Präzisionsgetriebe, Planetengetriebe, Zahnradfertigung, Gearboxes, Swiss Gears, Schneckengetriebe

Technical aspects

Service life

Because the service life of a gearbox depends on so many different variables, it cannot be predicted with any accuracy. The life can easily reach 20,000 hours of operation or more, but under extremely harsh duty conditions may not even reach 500 hours. The main factors affecting service life are:

• input speed
• output torque
• operation mode
• ambient conditions
• installation in the drive train

Application factor CB

Definition of the gearbox's output torque is the most important consideration when it comes to selecting a GYSIN precision gearbox. In order to take the various duty conditions into account without going into excessive detail, one need only consider the application factor CB, which incorporates the start/stop cycles, type of loading, output shaft loading, and duty cycle.

Lubrication

The purpose of lubrication is to prevent direct contact between the moving parts. The use of sophisticated lubricants, therefore, enhances gearbox performance and prolongs bearing life. Effective lubrication ensures:

• reduction of friction
• reduction of wear
• improved cooling
• protection against corrosion

Grease lubrication

The main factors to consider when selecting a lubricant are the ambient conditions, the operating temperature and the input speed. All GYSIN precision gearboxes are lubricated with greases of the very highest quality that take these factors into account. Besides being compatible with the most common applications, these greases provide unmatched, permanent lubrication. As a bonus, they prevent penetration of moisture and foreign objects.

GYSIN precision gearboxes are delivered with the cavities filled about 30% with grease. This filling level serves to keep the friction moment and temperature low at normal speeds. The lubrication is suitable for duty in ambient temperatures between -30° C and + 90° C. We recommend servicing, even where synthetic lubricants are used, every 10,000 hours of operation or at least every three years.