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Maintenance

4 articles on maintenance

Maintenance9 min read

Worm Gear Repair: When Fixing a Worn Gear Makes Sense (and When to Replace)

A worn worm gear poses one question: repair the damaged components or replace the set? This guide draws the line. Light pitting, early scratching, and worn worm shaft journals are repairable — the bronze wheel re-cut, the worm re-ground, the pair re-matched. Broken teeth, spalling, and scuffing with heat discoloration are not: those sets go straight to a new matched set, because worm and wheel are conjugate pairs that must always be handled together. Inside: a decision guide by wear mode and component, what a repair actually involves (sample reverse engineering, hub re-cutting, matched re-grinding), when re-cutting a large wheel on its existing hub pays, how to send a worn gear or a drawing to a machine shop for a free DFM review and a 24-hour quotation, and the lubrication and alignment practices that make the next set last.

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