2026 Bush-Whacker HD-121P

Heavy Duty 10 Foot Smooth Top Rotary Cutter

Bush-Whacker mowers are increasing in demand for agricultural, commercial, and other applications where a heavy-duty, rugged mower is needed. Bush-Whackers are available in a range of sizes to fit your needs from the five-foot model all the way to the 20-foot model.

Features May Include:

GEARBOXES 

540(Standard)OR 1,000(Optional)
● 250 HP main or transfer box
● 1 3/4″ 20 splined input and output shafts
● 120 HP outboard boxes
● 1 3/4″ 20 splined input shaft and 2″ output shaft
● Gearboxes have forged alloy steel malleable housings, carburized and hardened gears and shafts, tapered and ball bearings.

SLIPCLUTCH

● Heavy-duty clutch
● Spring type adjustment
● Four friction discs on the main shaft
● Outboard protection by means of shock-absorbing rubber elements connected to splined yokes which form a coupler.

BLADES

● 1/2″ x 4″ material
● Alloy spring steel
● Airlift design
● Free-swinging when encountering obstructions
● 8 inch overlap
● Bladetip speed: 15,775 fpm

TIRES

● Two solid rubber tires standard
● Independent shock absorbing system for rear suspension
● Optional: aircraft tires or implement tires, dual axle arms (4 tires total).

BUSH-WHACKER SPECIAL DECK

● 10 gauge skin
● 1/4″ sides
● 1/2″ and 3/8″ underframe
● Heavy duty T-frame design with one-piece electric welded frame

HYDRAULIC ADJUSTMENTS

● Hydraulic cylinder controls cutting and traveling height adjustments for pull and semi-mount models.

DIMENSIONS

● Cutting width: 122″
● Cutting height: 1 1/2″ to 15″
● Overall width: 132″
● Overall length: 125″
● Transportation width: 131″
● Cutting height for optional aircraft and implement tires: ″2 to 18″

WEIGHT

● 2,760 lbs. (Pull)

CHAIN GUARDS FRONT & REAR

● Standard

OTHER STANDARD FEATURES

● Replaceable skid shoes
● Quick-release guards for easy inspection and maintenance
● For pull model
● Heavy-duty tongue assembly
● Dual leveling rods
● Hydraulic hose holder
● Jack for easy hookup and unhooking from tractor

The Difference

• 10 Gauge Deck

• Structural frame of mower is 1/2″ and 3/8″ steel T-frame with 1/4″ side skirts.

• Gearboxes are mounted to 1/2″ plates that are welded to the 1/2″ frame rails.

• 4-bolt mounting on gearboxes

• Heads are tack-welded to the bottom of the deck so one person can tighten the nuts or change the gearbox.

• Blades are 1/2″ by 4″ instead of traditional 1/2″ by 3 1/2″.