John Deere COMPACTOR - catalog of spare parts
A sealer is a machine or mechanism used to reduce the size of a material, such as waste or biomass, by compacting. A garbage compactor is often used by a home or business to reduce the amount of garbage it produces. Baler-packer is often used to make compact and wrapped bales in order to improve logistics.
Normally powered by hydraulics, the compactors take many shapes and sizes. In landfills, for example, a large tractor (typically a converted front loader with some variant of an attached bulldozer blade) with studded steel wheels, called a landfill compactor, is used to move through waste deposited by waste collection vehicles (Wcv).
The wcvs themselves incorporate a compaction mechanism that is used to increase the payload of the vehicle and reduce the number of times it has to be emptied. This usually takes the form of hydraulically powered sliding plates that sweep out the collection Hopper and compress the material into what has already been loaded.
Various compactors are used in the processing of scrap metal, the most familiar is the car crusher. Such devices can either be of the "pancake" type, where the work car is flattened by a huge descending hydraulic plate, or a compression press, where the car is compressed from several directions until it looks like a large cube.