Overhaul of Raw Material Mill Gearbox

• Quick and easy installation of the large components

• Significantly reduced downtime and production loss

• Reduced labor cost for fitters and gearbox specialist

• Increased occupational safety – no work with open flame or heated oil bath

Traditionally, the customer spends approximately 30 days to overhaul their gearbox. This large raw mill gearbox contains 6 shafts with 5 gear sets of various sizes. Each shaft comprises 2-3 large size bearings. Moreover, a large coupling is part of the mounting/dismounting process. The complexity and size cause difficulties in the overhauling process that consume a significant amount of time. The Schaeffler mounting experts had the challenge to reduce the time of the overhauling process and improve the efficiency of the maintenance team.

This was the first time at Asia Cement Public Company Ltd. to mount and dismount gearbox components including the large sized bearings using the Medium-Frequency-Technology heating device. The flexible inductors could be used for several sizes of bearings and other gearbox components. The goal for Schaeffler to improve the efficiency of the overhaul was achieved by reducing the timeconsumption by 50%. Consequently, the downtime of the equipment could be reduced significantly and work safety could be increased as no open flames or oil baths were used.

The customer expressed his satisfaction and will also make use of the mounting service and the Schaeffler MFT tool rental for his next overhaul. This service solution can be used across all fields of sectors with similarly large bearings.