Bush Hog® 2820 Flex-Wing Rotary Cutter

Newest Flex-Wing Model 2820

The 2820 Flex-Wing meets the “more value for your investment” Bush Hog® tradition! The oil sight gauges, EZ lube drivelines, and wear bushings at axle pivots are just a few of the extra value features that separate it from competitor units. Adding maximized performance and durability that is needed for the cutting of road sides, row crops, and pastures results in a 20-foot Flex-Wing that is easy to distinguish from the pack. Your investment decision is easily made.

Notes: Unit(s) shown equipped with certain selections and options; please consult with your local Bush Hog dealer for all available configurations.

Performance Features

  • Free Wing Float, without movement of each hydraulic cylinder rod, is 22° down and 45° up.
  • Each cutting gearbox has the industry’s first massive 3-inches output shaft with more splines that are deeper for maximum transmission of torque to the blade pan.
  • The 2820 is available with Round Blade Carriers or Straight Shredder Blade Bars. The optional Shredder Kit will increase the shredding performance even more that the straight shredder bars.
  • An optional Material Distribution Baffle Kit spreads cut material to eliminate windrows.
  • Each wing has a single deck without exposed structure underneath.
  • The 2820 is available with optional deck rings that reduce the possibility of blade to deck contact.

Construction Features

  • Blade Pans are reinforced for maximum durability.
  • Spring Axle Cushions are located near each wheel for maximum shock absorption.
  • Wing Skids are formed upward at 45° to prevent “dig in” on turns that might damage the sideband.
  • Grease Fittings and Spring Steel Bushings for minimum wear are at each axle pivot point.
  • The center section has a doubled deck with no exposed structure for a smooth flow of cut material.

Safety Features

  • Highway travel lights are standard for safer travel on roadways.

Product Features

The Patent Pending oil sight gauge takes the guess work out of checking the oil. In less than 10 seconds, all three cutting box oil levels can be checked and rechecked as often as you walk around the machine. Never climb onto the cutter again to check the gearbox oil levels.


Bush Hog’s E-Z lube drivelines are quick and easy to service. All grease fittings on the pto CV driveline and wing drivelines align for quick location of grease points. Since all grease fittings on all drivelines are in an up position on every 5th revolution, service times are reduced.

Good for Tractors rated 40hp or under


Cutting Width
Cutting Height
2 to 14-inches
Perma-Level or Ball
Minimum Tractor PTO HP
90 HP
Side Band
1/4-Inch x 14-inches
1/2-inch x 4-inches Hi-Uplift
PTO Driveline
ASAE Cat 6
Wing Drivelines
ASAE Cat 5
Wing Flex
22° down / 87° up
Wing Free Float
22° down / 45° up
Splitter Gearbox Rating
250 HP
Cutting Gearbox Rating
255 HP
Gearbox Warranty
Gearbox Oil Sight Gauge
Cutting Capacity
Top Deck Center Section
Bottom Deck Center Section
Deck, Wings
Axle Cushions
Spring at each wheel
Blade Tip Speed @ 540 PTO
15,625 FPM
@ 1000 PTO
15,936 FPM
Wing Adjustment
Grass/Crop distribution
Optional baffles
Safety Tow Chain
Highway Safety Lights




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