Model 920-18 Rotary Industrial Series Compost Mixer
The 920-18 horizontal rotary compost mixer has a mixing capacity of 920 cu. ft. and can hold a maximum load up to 26,100 lbs. It is designed to thoroughly mix materials to ensure rapid decomposition to produce quality compost. This rotary compost mixer, equipped with the patented GeneRation II Staggered Rotor Mixer, will uniformly blend materials in a tumbling action that does not pack material and helps introduce air into the mix. The rotor lifts the material past the wedging point of the lower side auger, resulting in a aerated mixture while lowering power requirements. Total movement of material in the mixing chamber eliminates dead spots that are common in conventional auger mixers. Optional conveyors allow for the discharge and distribution of mixed nutrients with microorganisms into static compost piles or windrows. Available in truck, trailer or stationary units. This size of mixer works well with medium to larger composting operations.
Roto-Mix processing COIR
GeneRation II Staggered Rotor Mixers
The rotor design lifts ingredients up to the side augers that move ingredients end-to-end for a fast thorough mix. Unlike the wedge point on other brands, our rotor lifts the material past the wedging point of the lower side auger, giving you a fluffier mixture while lowering power requirements. Total movement of material in the mixing chamber eliminates dead spots common in conventional auger mixers.
The ROTO-MIX system protects particle size with less grinding or compaction. Particle size and porosity are critical because it determines how well air can enter and diffuse into the composting mass.
With better air introduction and distribution, ROTO-MIX consistently produces quality compost by lifting the ingredients past the lower auger’s wedge point, resulting in a fluffier mixture that starts to compost faster.
Totally Mixed Compost
Our thorough mixing action eliminates dead spots, auger tunneling and corner pile-up giving a consistent balance of nutrients and microorganisms from the first yard of compost to the last.
Mixes all types of compost ingredients, solid waste, yard waste, food waste, sludge and amendments, animal manure and a number of others with consistency day after day.
Industrial Scale Check System
Load-cell mounting comes standard with ROTO-MIX ball and socket type tie bars to connect the mixer to the frame. This feature eliminates side and end movement on the load cells, which allow for scale dependability and accuracy.
Optional hydraulic folding conveyor up to 120" long gives you ability to build windrows, static piles or load truck fast and efficiently. We also have a portable stand-alone conveyor for stationary models.
The forward pitch rotor design, adjustable UHMW wiper blades, and the rotation of the lower auger quickly and efficiently cleans out the mixing chamber.
Easy Access Rear Doors
The single lever latch makes inspection easy and desirable compared to other little latches or hardware.
Single Point Grease Bank
Allows quick lubrication from a single point. Heavy- duty drive assembly runs in an enclosed oil bath.
Lower Center of Gravity
A lower center of gravity makes for a more stable unit when making windrows and less shock load when cornering.
Forward Pitched Rotor
The patented rotor lifts ingredients up to the side augers that move the ingredients from end-to-end for thorough mixing. The lifting action of the rotor eliminates wedging of the compost under the lower auger. Patented tumbling design reduces mixing power requirements.
Industrial Duty Drive Train
Spline shafts eliminate shearing of keys and gaulding of shafts. Heavy-duty chains and bearings extend life and reduce downtime.
3⁄4", 5⁄8" and 1⁄2" flighting available for lower auger to extend life. Top augers available in 3⁄8" and 1⁄2" flighting.
The flared side allows ingredients to tumble out of the rotor speeding up the mixing action and reducing the chance for ingredients to get trapped inside the rotor.
Full Scale Frame
Sturdy box frame construction with rectangular tubing for increased stability and weighing accuracy. Scale frame assembly allows scale frame to float independent of truck frame.
|Maximum Mixing Capacity (cu. yd.) ***||16.7||23||27.8||34.1|
|Maximum Mixing Load (lb) ***||17,500||17,500||20,500||26,100|
|Unit Weight (lb) Truck Installed||13,650||16,380||19,975||21,685|
|Unit Weight (lb) Trailer w/Tires||15,400||18,130||22,125||25,085|
|Unit Weight (lb) Stationary w/o Motor||13,360||16,090||18,655||20,485|
|Power Requirement (hp) Truck||230||230||230||250|
|Power Requirement (hp) Trailer||110||120||130||140|
|Power Requirement (hp) Stationary||50||50||50||40 / 75|
|Mixer Length (in)||170||218||223||232|
|Mixing Chamber Length (in)||144||192||192||216|
|Length Hitch to Tire Center (in)||171||182||185 1⁄2||193|
|Length Cab to Axle Center (in)||108||138||144||156|
|Overall Length–Trailer (in)||226||278||278||303|
|Overall Length–Truck (cab to bumper) (in)||181||229||235||262|
|Overall Length–Stationary (in)||182 1⁄2||230 1⁄2||234||250|
|Overall Width–Folded Spout (in)||112||112||115||122 3⁄4|
|Overall Width–Stationary (in)||106 1⁄2||106 1⁄2||110||118 3⁄4|
|Overall Width–Mixer Only (in)||106 1⁄2||106 1⁄2||110||118 3⁄4|
|Overall Width–Optional Conveyor (in)||140||140||145||172|
|Overall Height–Trailer* (in)||110 1⁄2||110 1⁄2||121||130|
|Overall Height Mixer / Truck Frame / Ht. (in)||116 / 36||116 / 36||119 / 36||135 / 36|
|Overall Height Mixer–Stationary (in)||85 1⁄2||85 1⁄2||89 1⁄2||101 3⁄4|
|Overall Width of Tires–Trailer (in)||94||94||96||96|
|Overall Width of Tires–Truck (in)||96||96||96||96|
|Discharge Hinge Height Trailer (in)||45||45||51||59|
|Discharge Hinge Height Truck (in)||51||51||52||56|
|Discharge Width (in)||46 1⁄2||46 1⁄2||46 1⁄2||46 1⁄2|
|Thickness–Bottoms (in) **||3⁄8||3⁄8||3⁄8||3⁄8|
|Thickness–End Plates (in)||1⁄4||1⁄4||1⁄4||1⁄4|
|Thickness–Sides||7 ga||7 ga||7 ga||7 ga|
|Top Auger Flight (in)||3⁄8 x 24 OD||3⁄8 x 24 OD||3⁄8 x 24 OD||3⁄8 x 24 OD|
|Lower Auger Flight (in)||3⁄4, 1⁄2 x 24 OD||3⁄4, 1⁄2 x 24 OD||3⁄4, 1⁄2 x 24 OD||3⁄4, 1⁄2 x 24 OD|
|Rotor Diameter (in)||72 1⁄2||72 1⁄2||76 1⁄2||84 1⁄2|
|Rotor Bar Options||5,6||5,6||5,6||5,6|
|Drive Chain–Auger Drive **||#80H-100-120||#80H-100-120||#80H-100-120||Hydrostatic|
|Drive Chain–Rotor Drive||#140||#140||#120-(2)||#180|
*Tire size may vary in height. Unit weight, listed most common option packages. All dimensions and specifications are subject to change without notice.
**Other options available.
***Maximum mixer capacity can be reached by volume or weight. By volume, each rotor bar should always be visible at the peak of the rotor cycle. By weight, when maximum load capacity is reached.