Factory Unit Vibrates: Mounting Isolators Perished

A factory unit vibrates and early failure of the whole machine is feared. Whether the equipment is aged or only its mounting.

By Team Snowflake | Updated 24 Aug 2026

How this presents

Vibration coming up through the floor of an industrial space, from a unit whose mounting isolators have hardened and cracked. The installation has not been in place for very long. Ambient temperature in the space stays high all day.

Setup: Gree Wall-mounted1-3 yearsIndustrialSungei Kadut
Misread as: Early failure of the equipment as a whole, given how quickly this mounting has deteriorated.
Check first: How hot the space around the unit actually runs through the working day

What else produces this

Isolators failing well ahead of the usual span invite a question about quality, and the environment answers it far more convincingly. Rubber degrades faster the hotter it is kept, and a space that runs warm all day subjects those components to conditions the published life never assumed. Establishing the ambient temperature is more informative than examining the parts, because the parts will only confirm that they have hardened.

Isolators hardened and cracked well before their usual span raise the question of why, not merely what.
Equipment that has not been in service for long rules out ordinary ageing as a sufficient explanation.
High ambient temperature right through the working day accelerates rubber degradation substantially.
Vibration reaching the floor rather than staying at the unit follows directly from that hardening.

Why it happens

Rubber degrades chemically, and the rate of that reaction rises steeply with temperature. Components rated for years in an ordinary room reach the same condition in a fraction of that time in a hot industrial space. There is nothing wrong with the parts and nothing was fitted incorrectly. The published life simply assumed an environment that this installation does not have and never will.

What resolution involves

The isolators are replaced and the interval set against this environment rather than any general figure. Where a higher-temperature material exists for the mounting, it is specified instead. What matters is naming the cause honestly. This is not early failure of a poor component; it is ordinary failure on an accelerated timetable, and the timetable is the only part anybody can adjust.

How to tell it worked

The new isolators inspected after a fraction of the usual interval, rather than waiting for the published one to come round again. How much they have hardened by then is what sets the correct replacement schedule for this particular space.

Before you approve a quote

Heat sets the rubber's clock, not the calendar

Rubber ages chemically and the rate climbs steeply with temperature. Hot spaces shorten every life.
A component failing early in a hot space is normal failure on a faster timetable, not a defect.
Set the interval by inspecting early. The published figure assumed a room this one is not.

Questions this case answers

Why does our outdoor unit vibrate more in the afternoon?

Because rubber degrades chemically and that reaction speeds up considerably as temperature rises. A component rated for years in an ordinary room reaches the same state in a fraction of that time when kept hot.

What does heat do to aircon mounting rubber?

Inspect the new ones early, well before the published interval, and judge from how much they have hardened by then. The parts themselves set the right schedule far better than any general figure does.

Vibration that changes through the day: is the compressor at fault?

Where one exists for that mounting, yes, and it is a fair thing to ask about. Higher-temperature materials cost more and last considerably longer in a space like this, which usually makes them the cheaper choice over a few years.

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