CT820 Compost Turner

The professional-grade CT820 turns up to 6300 tons (5625 metric tons) of compost per hour. Rugged belt-drive operation and a heavy-duty frame give it the strength to get the job done, day after day. A state-of-the-art cab makes operation a pleasure and low-maintenance components reduce the need for repairs. Inside and out, the CT820 is built to last and equipped to take on anything.

Features and benefits

  • Take command with an intuitive PT Tech clutch for easy, safe drum operation. The SPB820 also features high ground speeds and smart steering controls.
  • Put it to the test. The low-maintenance drum system and heavy-duty structural steel frame were built to stand up to abuse while requiring minimal maintenance.
  • Work smarter with the SPB820’s large-diameter drum, which allows more oxygen to infiltrate the windrow to shorten the compost cycle.
  • Ride in comfort and safety in the SPB820’s state-of-the-art cab. Automatic shut-off and easy maintenance also make this compost turner as safe as possible.
  • See your Vermeer dealer for comprehensive service and genuine Vermeer replacement parts.
Maximum Width (Operation) 30 ' 9.1 m
Maximum Length (Operation) 16 ' 4.9 m
Maximum Height (Operations) 20 ' 6.1 m
Maximum Width (Transport) 10.5 ' 3.2 m
Maximum Length (Transport) 30 " 76.2 cm
Maximum Height (Transport) 14.5 ' 4.4 m
Weight (Four-Wheel Drive) 52000 lbs 23586.8 kg
Capacity 6300 tons per hour (5625 metric tons per hour)
Make and Model CAT C15 Tier III
Number of Cylinders
Gross Horsepower (Maximum) 540 hp 402.7 kw
Torque (Maximum) 1817 ft-lb 2463.5 Nm
Fuel Tank Capacity 225 gal 851.7 L
Max Fuel Consumption 29 gph 109.8 lph
Fuel Type Diesel
Air Cleaner Dry-type, dual element with service indicator
Oil Filter Spin-on CAT advanced efficiency engine oil filter
Recommended Oil CAT DEU-ULS (Diesel Engine Oil - Ultralow Sulfur) multigrade SAE 15W-40
Oil Volume with Filter 43.9 qt 41.5 L
Maximum Angle of Continuous Operation deg
Cooling Medium Caterpillar Extended-Life Coolant (ELC) or a commercial extended-life coolant that meets the Caterpillar EC-1 specifications
Coolant Capacity (Engine and Radiator) 18 gal 68.1 L
Air to Boil Temperature deg
Alternator 145 AMP
Fan Flexxaire 40 " (101.6 cm) diameter, auto-reversing
Clutch Type PT Tech HPTO14FX, microprocessor-controlled, wet hydraulic clutch
Clutch Drive Engagement Microprocessor-based clutch controller uses a series of pulsed signals to engage drum
Tank capacity 61 gal 230.9 L
Recommended Hydraulic Fluid ISO 68 (or Vermeer equivalent)
Filtration Method Return filter and suction strainer
System Voltage 12V, with two heavy-duty batteries that have a total of 2800 cca
System Protection Primary disconnect and fusible links
Mainframe Constructed of 6 " x 6 " x 0.25 " (15.2 cm x 15.2 cm x 0.6 cm), 6 " x 4 " x 0.375 " (15.2 cm x 10.2 cm x 1 cm) and 8 " x 6 " x 0.5 " (20.3 cm x 15.2 cm x 1.3 cm) steel tube with continuous welding
Operating Height Adjustment The machine includes hydraulic cylinders that independently adjust each front wheel and jointly adjust the rear wheels to raise the frame from 0 - 18 " (0 - 45.7 cm) above ground
Ground Drive Type Independent four wheel drive system
Tire size 54L x 37.00-25, twelve-ply floatation deep-tread tires
Maximum Speed 4.4 mph 7.1 km/h
Windrow Height 8 ' 2.4 m
Windrow Width 20 ' 6.1 m
Tunnel Lining Fully lined 0.25" (0.6 cm) steel plate
Rubber Skirting Curtains (thickness) 0.4 " 1 cm
Drum Cylinder 0.75 " (1.9 cm) thick, 20 ' (6.1 m) in length and 24 " (61 cm) in diameter
Drum Diameter (including flails) 54 " 137.2 cm
Drum Shaft Diameter 6 " 15.2 cm
Double Roller Main Drum Bearings 6 " 15.2 cm
Number of Flails 114
Flail Dimensions 0.75" x 4" x 11.625" (1.9 cm x 10.2 cm x 29.5 cm)
Drive System First Reduction Poly-synchronous chain drive
Drive System Second Reduction Poly-synchronous chain drive
Width 64 " 162.6 cm
Retraction 15 " 38.1 cm
Display Type LCD and LED indicator lights
Gauges Murphy Powerview with monitors - engine RPM, coolant temperature, oil pressure, volts, engine hours, fuel level, engine load and engine fault codes
Load Controller Designed to respond to changes in drum speed, slowing the machine's forward rate of travel if it encounters loads greater than the set point, without input from the operator
Two-Wheel Drive System Maximum speed of 3 mph (4 k/hr)
Hard-surfacing Flails Yes
Stainless Steel Processing Tunnel Yes
Spray Bar Attachment Yes
Cold Weather Engine Package Yes


CT820 Compost Turner


Why Use A Compost Turner?

Watch and learn about the benefits of using a compost turner!
March 25, 2014
Watch and learn about the benefits of using a compost turner!

September 13, 2013
Vermeer Corporation will withdraw from production and marketing of the Vermeer by Wildcat™ brand name. The process will transition the Vermeer by Wildcat brand products — including trommel screens and compost turners — to Vermeer brand products.