2025 Bush-Whacker® Flex-Wing Cutters ST-120

Information

2025 Bush-Whacker® Flex-Wing Cutters ST-120

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.

Photos

Highlights

  • Schriever, Louisiana
  • 2025
  • Bush-Whacker®
  • Flex-Wing Cutters ST-120
  • Available
  • Cutting: 2"-15" | for aircraft and implement tires: 2″ to 17″.

Specifications

  • 2025
  • Bush-Whacker®
  • Flex-Wing Cutters
  • ST-120
  • Rotary Cutters
  • Divider: 275 hp | Spindle: 250 hp | 540 rpm or 1,000 rpm
  • 1:1.6
  • 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.
  • Slip: Two heavy-duty clutches with spring type adjustment and four friction discs.
  • Five solid rubber tires standard. Independent shock absorbing system for all-wheel axles.
  • Blade: 16.768 fpm
  • 7 Gauge/12 Gauge
  • 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
  • Cutting: 2"-15" | for aircraft and implement tires: 2″ to 17″.
  • 10'
  • 140"
  • 167"
  • 4,980 lbs | Without chains and tires: 4,260 lb. | Total: 4,980 lb.
  • Safety Deflectors: Chain Guards | Tires: Laminated | Blades: Free swinging when encountering obstructions. 8" overlap for better cutting
  • Blades – 1/2" by 4" material, alloy spring steel, airlift design.
  • 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.
  • Mower: 1 Year Limited | Gearbox: 5 Year Limited