Slide Bush-Whacker MD-180 rotary mower Slide Bush-Whacker MD-180 rotary mower Slide Blades 1/2 Wing Driveline - Cat 4 Spindle Gearbix - 120 HP Side Skirt - 3/8 Replaceable Skid Shoes Main Driveline - Cat 6 Greasable Wing Hings Divider gearbox - 160 HP Deck ring and stump jumper standard Deck - 10ga


SpecificationsThe DifferenceComparison ChartColor Options
Gearboxes – 540 RPM or 1,000 RPM Three spindle gearboxes, 120 HP, base mounted, 1:1.47 ratio. One dividerbox, 160 HP, base mounted. All gearboxes have malleable housings, forged alloy steel, carburized and hardened gears and shafts, tapered and ball bearings. 6 splined 1 3/8” input shaft, 2 3/8” output shaft on spindle boxes.

Drive Shafts – Shielded PTOs made from finest quality propeller shaft materials and needle bearing universal joints. Category 6 80-degree constant velocity main drive shaft, Category 4 intermediate and wing drive shafts.

Slip Clutch – Three heavy-duty clutches with spring type adjustment and two friction discs.

Blades – 1/2” by 4” material, alloy spring steel, airlift design. Free swinging when encountering obstructions. 8” overlap for better
cutting. Blade tip speed: 15,500 FPM.

Wheels – Four solid rubber tires standard. Independent shock absorbing system for all wheel axles. Cutting height adjustable from 2” to 15”. Optional: 6 tires, aircraft tires, implement tires and foam filled tires.

Dimensions – Cutting width: 15’. Cutting height: adjustable from 2” to 15”. Overall width: 190”. Overall length: 189”. Cutting height for aircraft and implement tires: 2” to 17”.

Transportation width: 88”

Weight – Without chains and tires: 3,700 lb.
With standard tires and single curtain chains: 4,340 lb.

Bush-Whacker Special Deck – Includes a center deck which has a primary (bottom) deck of 10 gauge steel that is welded to heavy duty heavy channel structures. The smooth, easy-to-clean top deck is made of 12 gauge steel and protects the inner support frame. The wing decks are smooth, easy-to-clean 10 gauge steel.

  • Hydraulic Adjustments – Hydraulic lift cylinders control raising and lowering of flexible wing (winch assembly for manual wing lift is optional). Wing may be raised to 88 degrees above horizontal and lowered to 22 degrees below horizontal cutting plane. Optional: rephasing level lift systems.
  • Other Standard Features Include – Replaceable center and full length wing skid shoes, transport locking bars for each wing, heavy-duty tongue assembly with dual leveling rods, hydraulic hose holder, park jack for easy hookup and unhooking from tractor. Swivel clevis to relieve stress on tractor drawbar. Rubber guards front and back. Chain guards are an added option.


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.

  • Structural frame of mower is 3” channel, 1/4” thick.
  • Heavy duty 3/8” side skirt with full length skid shoes.
  • Deck rings standard.
  • Hinges — Structural tubing with grease fittings.
  • 4-bolt mounting on gearboxes — bolt-heads are tack-welded to bottom of deck so one person can tighten the nuts or change the gearbox.

Comparison 15′ MD Brush Cutters

BrandBush-WhackerBush HogWoodsRhinoJohn Deere
Cutting Heights2″-15″2″-14″2″-12″2″-13″3″-14″
Cutting Capacity3″2″1.5″1.5″2″
Deck Thickness10 Gauge/12 Gauge10 Gauge11 Gauge11 Gauge11 Gauge
Side Skirt Thickness3/8″1/4″.18″1/4″1/4″
Divider Gearbox HP160 HP160 HP190 HP160 HP250 HP
Spindle Gearbox HP120 HP110 HP160 HP65 HP100 HP
Blade Size1/2″ x 4″1/2″ x 4″1/2″ x 4″1/2″ x 4″1/2″ x 4″
Blade Tip Speed15,500 FPM15,268 FPM15,270FPM14,963 FPM17,281 FPM
Blade Overlap8″6″6″6″6″
Safety DeflectorsChain GuardsRubber BeltingRubber or ChainRubber or ChainChain Guards
Mower Warranty1 Year Limited1 Year Limited1 Year Limited1 Year Limited1 Year Limited
Gearbox Warranty5 Year Limited5 Year Limited6 Year Limited6 Year Limited6 Year Limited
  • Yellow (Standard) PMS 1235

  • Blue PMS 293

  • Red PMS 1795

  • Orange PMS 172

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.