A large Wirtgen W2200 planer waiting to start a highway re-surfacing job
A Planer or cold planer (also known as a pavement planer, pavement recycler, mill or asphalt milling machine or rotomill) is an specialist machine used to remove bituminous pavement or asphalt concrete from roadways, resulting in a flat, even surface with shallow ribs. This is accomplished by bringing a spinning mandrel or "head" into contact with the pavement at an exact depth or slope. It is normally fed by conveyor into a dump truck, or semi trailer but can be left in place or "wind-rowed" to be removed at a later date or used in insitu recycling operations and relaid.
These machines can come with a working width from 300 mm up to 2.5 m +
The smaller machines are used for patching and are mounted on Skid Loaders or on the boom of a Wheeled Excavator.
- Main article: Patch planer
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