2024 Bush-Whacker® Flex-Wing Cutters ST-120

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Year 2024
Make Bush-Whacker®
Model Flex-Wing Cutters

A close relative to the ever-popular ST-180, the ST-120’s smooth-top design is one of the most rugged flex-wing brush cutters on the market today. With it’s 4" cutting capacity and 250 HP gearbox, you will be hard-pressed to find another mower that can outperform the ST-120 in the field or at the cash register.

Hall Manufacturing provides a limited warranty of one year on any machine or component, and five years on any mechanical gearbox or gearbox component.

This warranty covers defective materials and workmanship on the complete machine. Limitations and exclusions apply.

Features may include:

Heavy-duty 3/8" side skirt with full-length skid shoes

Rated to cut up to 4' diameter brush.

Hinges 3" x 4" tubing with grease fittings.

Hinges – Structural tubing with grease fittings.

8-bolt mounting on gearboxes – bolt-heads are tack-welded to bottom of deck so one person can tighten the nuts or change the gearbox.

Drivetrain

Gearbox Divider: 275 hp | Spindle: 250 hp | 540 rpm or 1,000 rpm

Gear Ratio (Primary) 1:1.6

Drive Shaft All gearboxes have malleable housings, forged alloy steel, carburized and hardened gears and shafts, tapered and ball bearings. 20 splined 1 3/4" input shaft, 2 3/8" output shaft on spindle boxes. | Category 5 80-degree constant velocity main , Category 4 intermediate, and wing.

Clutch Slip: Two heavy-duty clutches with spring type adjustment and four friction discs.

Wheels & Tires

Wheels Five solid rubber tires standard. Independent shock absorbing system for all-wheel axles.

Operational

Operating Conditions Blade: 16.768 fpm

Chassis

Deck Thickness 7 Gauge/12 Gauge

Dimensions

Dimensions Cutting Capacity: 4"| Side Skirt Thickness: 3/8" | Blade Size: 1/2" x 4" | Blade Overlap: 8" | 20 splined 1 3/4″ input shaft, 2 3/8″ output shaft

Height Cutting: 2"-15" | for aircraft and implement tires: 2″ to 17″.

Cutting Width 10'

Overall Width 140"

Overall Length 167"

Weights

Weight 4,980 lbs | Without chains and tires: 4,260 lb. | Total: 4,980 lb.

Features

Features Safety Deflectors: Chain Guards | Tires: Laminated | Blades: Free swinging when encountering obstructions. 8" overlap for better cutting

Construction Material Blades – 1/2" by 4" material, alloy spring steel, airlift design.

Adjustability Hydraulic Adjustments – Hydraulic lift cylinders control raising and lowering of a flexible wing.Wing may be raised to 88 degrees above horizontal and lowered to 22 degrees below the horizontal cutting plane.

Warranty

Warranty Mower: 1 Year Limited | Gearbox: 5 Year Limited

2024 Bush-Whacker® Flex-Wing Cutters ST-120