What is a Crusher?
A crusher is more or less what it sounds like; it is a piece of machinery used to compress the metal remains of a junked car after it has been stripped of all useful parts. When you crush the vehicle, it will allow you to transport more crushed vehicles to a recycling facility.
How do they work?
Although both a shredder and a crusher are part of a salvage yard to help condense and recycle vehicles; that is about all they have in common.
A shredder breaks down large pieces of metal into smaller pieces with the use of large heavy-duty hammers that break the metal down. In addition, a shredder has built-in magnets that can separate ferrous and non-ferrous materials for recycling. Generally, vehicles do not come through a shredder until they have gone through a crusher.
A crusher is used to compress the remaining junked vehicle in order to send it through the shredder and be shipped out to a recycling facility. Crushers can be portable but older ones tend to be stationary.