How does a disc mower work?

Disc mowers were invented as a logical progression from the sickle bar design. Instead of blades moving back and forth on the cutter bar though, they are mounted on several small discs that rotate at high speeds, mounted on top of the cutter bar. Generally, there are 2 free-swinging blades bolted to each disc.

How is grass cut by a disc mower?

The disc rotates at a high speed so spinning the blades enabling them to chop the grass. A rotary mower will usually have a collection box or bag to collect the grass clippings. This type of mower will often have an adjustable cutting height so can cut slightly longer grass as well as short.

How much horsepower does it take to run a disc mower?

A new 9 ft cut disc mower/conditioner with rubber rolls from NH calls for 65 HP. But if you move up to the 10 foot cut NH, minimum HP is 80. Keep in mind that these ratings are for ideal conditions (flat land, uniform crop, etc.) and running at pretty high ground speeds.

What is the difference between a drum mower and a disc mower?

They’re basically the same thing. The big difference is whether or not they have either conditioning rollers or impellers to help the hay dry faster. Typically a haybine disc mower will have the conditioner as part of the unit. When they talk about drum mowers they are usually just talking about mower itself.

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Can I cut hay with a flail mower?

The flails in a flail-type mower conditioner are not knives. They do not cut the hay, they are designed to strip some of the waxy coating of the hay to allow faster drying. You can certainly cut hay with a flail mower, but it will greatly reduce the quality of the hay over mowing with a machine designed for the job.

How much horsepower does a hay mower have?

Most standard square balers on the market require 35 horsepower at your tractor’s PTO, and a minimum tractor weight of around 3000 pounds.

How much does a disc mower weight?


Number of disks Seven
Transport width
Weight 669 kg 1475 lb
Disk speed 2986 rpm
Cutting speed

What is a disc mower used for?

Disc mowers are fast and efficient at cutting hay and forage crops for harvest and are available in a wide range of cutting widths and horsepower requirements.

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