Cementos La Cruz Azul was experiencing ongoing problems with a raw mill gear box at its Hidalgo plant. An unreliable lubrication unit necessitated regular repairs, leading to significant downtime and expense. But was it worth replacing the whole gearbox?
The gearbox of (the raw) mill had required major repairs every five years since its start-up due to problems with the lubrication unit. The problems with the high-pressure lubrication system, supplying oil to the axial bearing, which supports the grinding table of the raw mill had even caused damage to the mill itself. MAAG Gear is familiar with problems regarding lubrication units. The harsh environment and rough operating conditions for vertical roller mills place the highest demands on the reduction gears themselves as well as on the ancillary equipment, such as the lubrication unit. As a result, the installation of a MAAG lubrication system is advantageous due to its higher level of operational reliability and lower maintenance requirements.