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Just hit my 100th rail replacement on a single Otis model and I'm honestly surprised
I've been maintaining this one building downtown for 3 years. 30 stops, high traffic. Yesterday I pulled the PM log and counted. 100 door rail replacements on these Gen2s. That's like one every 11 days. They're not even that old, maybe 8 years. Anyone else seeing this many rail swaps on newer models?
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laura_schmidt821mo agoMost Upvoted
Nah, I'm gonna call this one different. 100 rail swaps in 3 years on a Gen2? That sounds like an installation problem or a building issue, not a blanket problem with the model. I've got a bank of 8 year old Gen2s in a hotel property that are still on their original rails. Maybe you're dealing with heavy salt exposure from a parking garage beneath or someone's been using the wrong lube on the door tracks. Could also be that the doors are out of adjustment and the hangers are chewing up the rails. I'd check the door gaps and hanger alignment before blaming the rail itself.
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milam481mo ago
Hold up a sec on calling it an installation problem outright. I get what you're saying about your hotel bank holding up fine, but 100 swaps in 3 years is way beyond normal wear and tear, even with bad installs. The Gen2 had a known issue with the rail material being too soft on early production runs, especially around the top bends where the hangers load up. I've seen cases where the rail actually mushroomed out from the hanger pressure, not from salt or wrong lube. You'd spot that by looking at the rail surface near the door open position for a rolled over lip. Your hotel bank might be on later production rails that fixed the batch, which would explain why they're still solid.
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