Pulverizer Gearbox Rebuild Programs

Service Detail from GE & Alstom Power

Pulverizer Gearbox Rebuild Programs-Image

Pulverizer Gearbox Rebuild Programs combine Alstom's coal pulverization experience, a network of Regional Service Centers and supply partners, and proven rebuild processes to deliver best-in-class service.

Alstom can rebuild gearboxes at one of our facilities or supply all the necessary components such as bearings, gears and shafts for on-site rebuilding. Rebuild Programs are available for all removable gearboxes including:

  • triple reduction
  • roller bearing
  • bushing and pancake styles

...as used on Alstom pulverizers and MPS and EL-type mills.

On-Site Rebuilds

Alstom offers pre-assembled gearbox shafts and upgraded bearing seal arrangements for our customers' convenience.


Customers can make component upgrades, such as bearing and seal modifications, a part of the rebuild.

Rebuild Overview

  • Disassemble completely
  • Clean and dimensionally inspect all components
  • Flush and examine all lubrication systems
  • Replace worn and damaged parts such as gears, bearings, shafts, and seals
  • Repair components and parts
  • Reassemble to strict procedures and tolerances with all settings and adjustments made to engineering specifications
  • Perform "No-Load" spin test
  • Evaluate and document gearbox condition and rebuild

R3 Rotation ProgramsAlstom offers its R3 Rotation Program when a number of gearboxes require rebuilding over a period of time. This program is a systematic method for rebuilding equipment and returning it to service.

Rebuild – The gearbox is rebuilt.

Restock – Once rebuilt the gearbox is placed in the customer's exclusive stock at an Alstom facility.

Replace – The gearbox is returned to the customer to replace a similar gearbox requiring rebuilding and the cycle is continued.

Other Rebuild Services

Alstom can rebuild the worm shaft and worm gear assembly in lieu of a complete pulverizer gearbox rebuild. In addition to rebuilding pulverizer gearboxes, Alstom can rebuild any gearbox in the power plant including those for:

  • conveyor belts
  • cooling towers
  • air heaters
  • rail car unloaders

...to name a few.

Powering Your Plant Performance

Pulverizer Gearbox Rebuild Programs are another example of the Alstom commitment to provide products and services that extend equipment life cycle, improve availability and decrease the Total Cost of Ownership.