Bushing (isolator)

bushingsbushingSilentblocisolasticrubber bushingMetalasticrubber bushesanti-vibration mountanti-vibration mountingelastic
A bushing or rubber bushing is a type of vibration isolator.wikipedia
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Polyurethane

urethanepolyurethanesurethanes
A common application is in vehicle suspension systems, where a bushing made of rubber (or, more often, synthetic rubber or polyurethane) separates the faces of two metal objects while allowing a certain amount of movement.
Polyurethanes are used in the manufacture of high-resilience foam seating, rigid foam insulation panels, microcellular foam seals and gaskets, durable elastomeric wheels and tires (such as roller coaster, escalator, shopping cart, elevator, and skateboard wheels), automotive suspension bushings, electrical potting compounds, high-performance adhesives, surface coatings and surface sealants, synthetic fibers (e.g., Spandex), carpet underlay, hard-plastic parts (e.g., for electronic instruments), condoms, and hoses.

Car suspension

suspensionrear suspensionsuspension system
A common application is in vehicle suspension systems, where a bushing made of rubber (or, more often, synthetic rubber or polyurethane) separates the faces of two metal objects while allowing a certain amount of movement.
In some modern cars, the flexibility is mainly in the rubber bushings, which are subject to decay over time.

Vibration isolation

vibration isolatorisolate the vibrationisolated
A bushing or rubber bushing is a type of vibration isolator.

Double wishbone suspension

double wishboneDouble wishboneswishbone
To resist fore-aft loads such as acceleration and braking, the arms require two bushings or ball joints at the body.

Shock mount

shock-mountshock
*Shock mount
Rubber bushings compress synthetic rubber rings on bolts to provide some isolation:operating temperature is sometimes a factor.

Jaguar XK6 engine

JaguarXKXK engine
An innovation was the fitting of a proprietary Metalastik vibration damper on the nose of the crankshaft to eliminate damaging crankshaft resonances.

Skateboard

skateboardstrucksgrip tape
Between the baseplate and the hanger are bushings, also rubbers or grommets, that provide the cushion mechanism for turning the skateboard.

Frederick Morrell Zeder

Fred M. ZederFred ZederFrederick Zeder
Lee Iacocca credits Chrysler's chief of engineering during that era, Frederick Zeder, with leading the effort.
For example, Lee Iacocca credited Frederick Zeder, who became Chrysler's chief of engineering, with leading the development of rubber motor mounts.

Floating Power

Chrysler's novel engine-mounting method was marketed as "Floating Power".
The bracket was lined with rubber.

Natural rubber

rubberIndia rubbercaoutchouc
A common application is in vehicle suspension systems, where a bushing made of rubber (or, more often, synthetic rubber or polyurethane) separates the faces of two metal objects while allowing a certain amount of movement.

Synthetic rubber

rubberartificial rubbersynthetic
A common application is in vehicle suspension systems, where a bushing made of rubber (or, more often, synthetic rubber or polyurethane) separates the faces of two metal objects while allowing a certain amount of movement.

Tap (valve)

faucettapspigot
They might also feature an internal crush tube which protects the bushing from being crushed by the fixings which hold it onto a threaded spigot.

Plain bearing

journal bearingbushingbushings
An important difference compared with plain bearings is that the relative motion between the two connected parts is accommodated by strain in the rubber, rather than by shear or friction at the interface.

Anti-roll bar

sway baranti-roll barsstabilizer bar
Some rubber bushings, such as the D block for a sway bar, do allow sliding at the interface between one part and the rubber.

Noise

acoustic noisenoisyNoise (audio)
The main advantage of a bushing, as compared to a solid connection, is less noise and vibration are transmitted.

Vibration

vibrationsvibratevibrating
The main advantage of a bushing, as compared to a solid connection, is less noise and vibration are transmitted.

Lubrication

lubricatelubricatinglubricated
Another advantage is that they require little to no lubrication.

Motor oil

engine oiloiloil change
Disadvantages include that the rubber bushings can deteriorate quickly in the presence of oils (e.g., motor oil, mineral oil) and extreme heat and cold.

Mineral oil

petroleum oiloilparaffin oil
Disadvantages include that the rubber bushings can deteriorate quickly in the presence of oils (e.g., motor oil, mineral oil) and extreme heat and cold.

Automobile handling

handlingcar handlingvehicle handling
This may result in camber, caster, or toe changes in the wheels of the vehicle during high-load conditions (cornering and braking), adversely affecting the vehicle's handling.

Charles E. Sorensen

Charles Sorensen
Charles E. Sorensen credits Walter Chrysler as being a leader in encouraging the adoption of rubber vibration-isolating mounts.