Hay bales are pretty interesting things, after all, they manage to get thousands of hay stems into massively compact barrels. But how exactly do they pull it off? A hay baler is pulled by a tractor, and a rake within the baler rakes the hay up.
The raking process is gentle because the farmers want as much of the hay intact as possible, and they also don’t want rocks or excess amounts of dirt to go into the machine. The raked hay goes into the machine and goes into a bale chamber, which contains a plunger. The plunger compresses the hay, also ensuring the hay is the same size when it comes out.
After enough hay has been raked and cut, then the bale is automatically twined and secured with rope to tie it. Then the full bale is pushed out the other end of the machine and dropped onto the field. This all happens faster than one might think, and then the baled hay can be picked up by a hay spear kit and then placed in a barn.
Think of the Hay Baler like an organism, where it ‘eats’ the hay, then a set of mechanisms inside the machine ‘digest’ it, before the hay is ‘excreted’ out as a bale. That’s how the machine works, and depending on the size of the baler, the machine can create more bales in a given time frame or do more with the bale before forcing it out. For example, some larger machines wrap the whole bail in twine.
That’s how hay is baled and why you see so many evenly spaced hay bales in fields, then the bales are taken back to the farm, stored, and later used whenever hay is needed by the farmers or consumers.