Any idea what this type of mount is called?

I have been working on trucks for 43 years and I have never seen a bushing like that.
The voids in the rubber are probably there to make for a softer ride.
International uses a bushing with voids in the front cab mounts on the smaller trucks but its a lot bigger
and presses into a casting.
Yes, the voids are for a little bit of cushioning, and just below them are little shock absorbers......
 

historicalarms

Ultra Member
Also a similar set-up was used in seat base construction for Cat heavy equipment before the gas compression ones were designed, they used an enclosed trapped rubber block with a torsion bar that torqued the rubber around a shaft...hard riding things but they took the sudden stop shock out of our backs.
 

trevj

Ultra Member
Also a similar set-up was used in seat base construction for Cat heavy equipment before the gas compression ones were designed, they used an enclosed trapped rubber block with a torsion bar that torqued the rubber around a shaft...hard riding things but they took the sudden stop shock out of our backs.
You can still get torsion style suspensions for trailer wheels, no doubt built the same way.
 
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