Replacement Blades & Knives

Replacement Blades & Knives

Worn cutting edges slow down your work and leave behind an uneven finish, which is why replacement blades and knives are so crucial for farm and ranch jobs. As the blades on mowers and rotary cutters dull over the course of a long season, a fresh set restores the clean, even cut the machine was built to deliver. Tractor Supply offers replacement options sized and shaped to match a wide range of field machines.

Sharpen Your Edge for Optimal Performance

A sharp, correctly fitted edge does far more than slice through grass and brush; it protects the machine behind it, since a dull or bent blade forces the engine and driveline to work harder than they ever should. Over time, that added strain shortens the working life of the equipment you count on from spring through fall.

Our selection includes cutting parts for rotary cutters, disc mowers, finish mowers and sickle-bar machines. Each blade type features a specific shape, mounting pattern and steel grade designed for its intended job.

Rotary Cutter Replacements

Thick, blunt rotary cutter blades are designed to tackle heavy brush, tall weeds and overgrown pasture. A replacement edge slices through dense growth with less resistance and produces a cleaner, more even cut. Blade sizes range from approximately 14 to 30 in., with options for 4-, 5- and 6-ft. decks. Brand-specific blades ensure a proper fit, making replacement straightforward. Properly matching blade size and bolt pattern keeps your cutter balanced and operating smoothly.

Disc and Finish Mower Blades

Hay and forage work demand a faster, cleaner cut than brush clearing. Disc mower blades meet this need with lightweight options available in both left- and right-hand configurations. Finish mower blades, on the other hand, are designed to trim well-maintained areas to a uniform height, rather than tackle overgrown patches. These longer blades typically are offered in three-blade sets for 5- and 6-ft. decks. Understanding how your mowers and cutters are set up makes picking the right blade simple.

Sickle and Cutter Sections

Sickle-bar mowers and harvesting machines cut crops with a long blade made up of small triangular teeth, called sections, that slide back and forth across a fixed bar to shear stalks, similar to a pair of scissors. Each section is about 3 in. wide and installs in a long row, so a complete replacement typically involves changing several at once. Proper fitment depends on your machine’s make and model, making it crucial to match each section accordingly. Since these teeth endure constant contact with stalks, they wear and chip more quickly than larger blades and require more frequent replacement.

Pick Up Replacement Knives and Blades from Tractor Supply

A machine’s cutting performance depends entirely on the sharpness of its blade, and replacing worn blades and sections helps to restore uneven results into consistently clean cuts that last all season long. Browse replacement blades and knives, along with the rest of our tractor and 3-point attachments, on our website or at your local Tractor Supply store.