A tree chipper or woodchipper is a machine used for reducing wood (generally tree limbs or trunks) into smaller woodchips. They are often portable, being mounted on wheels on frames suitable for towing behind a truck or van. Power is generally provided by an internal combustion engine from 3 horsepower (2.2 kW) to 1,000 horsepower (750 kW). There are also high power chipper models mounted on trucks and powered by a separate engine. These models usually also have a hydraulic crane.

A tree limb is inserted into the hopper (the collar serving as a partial safety mechanism to keep human body parts away from the chipping blades) and started into the chipping mechanism. The chips exit through a chute and can be directed into a truck-mounted container or onto the ground. Typical output is chips on the order of 1 inch (2.5 cm) to 2 inches (5.1 cm) across in size. The resulting wood chips have various uses such as being spread as a ground cover or being fed into a digester during papermaking.

LEFA farm machines videos for your refference:

Mi-heavy Flail Mower (EFG) https://www.youtube.com/watch?v=O_tVXodWdN8 

Light side Flail mower (EFDL)https://www.youtube.com/watch?v=Bh73zRIYBpc 

Middle Heavy Side Flail Mower(EFGL) https://www.youtube.com/watch?v=ZuWSCmiPows 

Topper Mower(TM) https://www.youtube.com/watch?v=VLUEyam_5DY  

Finishing Mower: https://www.youtube.com/watch?t=33&v=iH6uQiqEyuQ

Light Duty Rotary Tiller(RT) https://www.youtube.com/watch?v=jphaylxaKUg 

Potato planter: https://www.youtube.com/watch?v=XeaJxUBR0EU

Potato harvester: http://youtu.be/ztPLsZ74PJY.