Self-Propelled Compost Windrow Turners

Frontier F-Series Windrow Turner

These windrow turners are industrial machines. No other turner compares to Frontier’s strength, simplicity, reliability and 24/7 performance.

With the dynamic trend toward replacing costly fertilizers and soil amendments, making high quality compost is rapidly becoming a substantial source of income. Homogenizing takes horsepower, but it pays huge dividends.

How Frontier’s Turning System Benefits You:

  • Drives out CO2 with gale-force winds of fresh air
  • Patented paddle configuration mixes inside out, outside in, upside down and downside up
  • Mixes and reforms row naturally
  • Reduces site odors
  • Decreased composting duration
  • Increased value of finished product
Basics: Frontier’s self-propelled windrow turners are equipped with proven operating systems:

  • Pressured, pre-filtered air conditioned cab with panoramic views
  • Hydraulic powered planetary track or wheel drives with integral braking system
  • Stainless steel fuel & hydraulic reservoirs
  • Drum drive system is the most efficient power transfer available today
  • Our design system life is 10,000 hours
This state-of-the-art series of windrow turners are considered the best of the best. Just ask our customers.

Track Drive Models:


FDT-18 and FDT-20

Built like tanks, these turners mean business.
Frames: Massive 8″ x 12″ x 3/8″ wall mainframes tubing
Tunnel lining: 3/8″ & 1/4″ plate
Tanks (fuel and hyd reservoir): stainless steel
Track system: 24″ wide pads x 12′ long provides maximum flotation and stability on slopes. Planetary drives with integral hydraulic piston motors and brakes. Powerful propel will not stall in any condition. Integral braking is automatic in downhill slope or park conditions.
Drum drive: Frontier’s exclusive FDT belt drive system features:

  • Drum is driven from both ends for even power transfer.
  • Conventional components are available from multiple sources
  • Auto tensioning on final drive belts
  • Clutch is hydraulically actuated and self-adjusting with overkill capability
  • Clutch is also isolated from drum drive disconnect to eliminate operator abuse without complicated and expensive control systems
  • Reliability, low fuel consumption, low maintenance will be your experience with this rock solid drive system

Cab System:

  • Pressurized with charcoal filtered air intake for heater/ac system
  • Walk through design with doors on both sides
  • Roof mounted instrument system for unobstructed panoramic view
  • Smoked glass
  • Skid steer electronic controls with locking neutral
  • Rear backup alarms
  • Fire extinguisher
  • Radio/MP3 player stereo w/charging port


  • Remote view camera system with multiple cameras to monitor key points of operation and maintenance
  • Speed indicator: Digital read out of forward speed
  • Watering system plumbing with in-cab actuated shut-off valve

Wheel Drive Models:

F-18 4x4
F-18 4x4

F-18 4×4 and 4×2

Design features:

  • Wheel propelled turners for paved (2×4) and unpaved (4×4)
  • Economically priced
  • Simple control systems
  • Accept Frontier self-trailer packages
  • Frame Strength: 8″ x 12″ mainframe members with “ladder” construction minimize flex for self-trailer capability
  • Tunnel Lining: 3/8″ plate
  • Planetary wheel drives w/integral braking
  • 4×4 (a Frontier first)
  • 2 speed propell
  • 2×4 with rear castors for economical paved-site operation
  • Cab slides forward for optimum operator view
  • Retractable cab, drive wheels and castors for legal width highway transport
  • “Smart” clutch is hydraulically actuated, microprocessor control, self-adjusting for low maintenance and protection from operator abuse
  • Drum drive: Frontier efficient belt drive is auto tensioned and low maintenance

Cab System:

  • Slides forward for high view operation and retracts for highway transport
  • Pressurized pre-filtered heat/ac system
  • Smoked glass
  • Skid steer electronic controllers w/locking neutral
  • Rear backup alarms


  • Watering system plumbing w/shut off valve
  • Self-trailering package (see self-trailering page for details)

Windrow Height 6’3″ to 8′ 7′ to 9′ 7′ to 9′
Windrow Width 18′ 18′ 20′
Engine Cummins 400 HP 500 HP 550 HP
Overall Drum Diameter 35″ 35″ 35″
Number of Paddles 76 76 84
Capacity (cu yrds/hr) 4600 5500 6000

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