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Asked: March 25, 20242024-03-25T07:24:04+05:30 2024-03-25T07:24:04+05:30In: Coupling

Why Bush Pin Coupling is called flexible coupling?

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maintenancetip.com · Answer 1 · 2024-03-25T11:02:16+05:30

The name flexible represents the presence of a flexible element (made of rubber or polyurethane) in the coupling.
“Flexible” in “flexible coupling” refers to the overall ability of the coupling to handle misalignments and vibrations during service conditions.
Bush pin coupling contains a pin (coupling bolts) with a flexible bush on it.
Flexible Bush: The “bush” part of the name refers to a sleeve made from a flexible material, typically elastomer (like rubber) or polyurethane. This material allows the bush to bend slightly, accommodating small misalignments between the shafts being connected.
Accommodating Misalignment: By absorbing these misalignments, the bush pin coupling prevents excessive stress on the shafts and bearings of the connected equipment. This can significantly improve the lifespan and performance of the machinery.
Damping Vibrations: The elastomeric bush doesn’t just handle misalignment; it also helps dampen vibrations that might be transmitted between the shafts. Think of a shock absorber in a car – the bush acts similarly, reducing unwanted vibrations that could cause noise, wear, or even damage to the connected machines.