ST-121

With two spindle gearboxes, 250 HP, and longer blades, this rugged, heavy duty 10 foot rotary cutter can handle any job you throw at it. And the smooth-top deck makes it easier to clean.

Specs

Gearboxes – 540 OR 1,000 RPM
, 250 HP main or transfer box with 1 ¾” 20 splined input and output shafts. Two spindle gearboxes, 250 HP, base mounted, 1:1.6 ratio. 20 splined 1 3/4” input shaft, 2 3/8” output shaft on spindle boxes. All gearboxes have forged alloy steel malleable housings, carburized and hardened gears and shafts, tapered and ball bearing.

Drive Shafts – Shielded PTO’s made from the finest quality propeller shaft material and needle bearing universal joints. Category 4 main input and side drives. Category 4 jack shaft for pull model. Category 4 80-degree constant velocity main drive shaft optional for pull model.

Slip Clutch – Heavy-duty clutch with spring type adjustment and four friction discs on 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, 6 inch overlap for better cutting. Blade tip speed: 15,800 fpm.

Wheels – Two solid rubber tires standard. Independent shock absorbing system for all wheel axles. Optional: aircraft tires or implement tires, dual axle arms (4 tires total).

Bush-Whacker Special Deck – Bush-Whacker Special Deck includes a primary (bottom) deck of 7 gauge steel that is welded to heavy duty heavy tubing structures. The smooth, easy-to-clean top deck is made of 12 gauge steel and protects the inner support frame. Combined deck thickness: .2921”.

Hydraulic Adjustments – Hydraulic cylinder controls cutting and traveling height adjustments for pull and semi mount models (optional for lift model).

Dimensions – Cutting width: 121 inches. Cutting height: adjustable from 2” to 15”. Axles adjustable from 24” centers to 40” centers for row crops. Overall width: 131”. Overall length: 140”. Transportation wide: 131”. Cutting height for aircraft and implement tires: 2” to 17”.

Weight -3,500 lbs.

Chain Guards Front & Rear

Other Standard Features – Replaceable skid shoes. For pull model: heavy-duty tongue assembly with dual leveling rods, hydraulic hose holder, jack for easy hookup and unhooking from tractor.

Specifications listed are standard; however, any State Department of Transportation specifications that may differ from standard Bush-Whacker® specifications will take precedence and be implemented into production.

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Other Bush-Whacker Cutters

Durant Location

4710 W Hwy 70
Durant, OK 74701
(580)920-0111

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8087 Hwy 69/75
Calera, OK 74730
(580)920-0111