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Air Preheater Gearboxes

Helping Power Plants & Manufacturing Facilities

Operate Efficiently

Penn Machine is the authorized source for new gearboxes used on Ljungström Air Preheaters‭*. ‬We also perform rebuilds‭, ‬as well as‭ ‬carry a comprehensive inventory of parts for these reducers to minimize downtime‭. ‬We have what you need for optimizing productivity at your coal or oil-fired power generation station or converted natural gas plant‭.‬

These preheater gearboxes can also be found in chemical plants‭, ‬paper mills‭, ‬refineries and other‭ ‬manufacturing facilities‭. ‬At Penn Machine‭, ‬we’re the authorized source for these models‭:‬

 3AP
 4AP
 5AP
 7AP
 8AP

As Ljungström’s gearbox OEM of choice for the past 20‭ ‬years‭, ‬we continue to manufacture replacement components to original specifications‭, ‬including parts for units made prior to 1998‭.‬

For additional assistance,
contact pmcgearbox@pennmach.com

Air Preheater Gearboxes

*Ljungström Air Preheater is a registered trademark of ARVOS Inc., Wellsville, NY, formerly Air Preheater Company.