EZ 4-12-2 Portable Concrete Mixer Batching Plant – Automated 4 Cubic Yards

EZ 4-10-2

The EZ 4-12-2 portable concrete mixer and concrete batch plant is computer automated and mixes 4 cubic yards (108 cu ft) of concrete. This mobile concrete mixer batcher can be towed into very remote job sites where a concrete mixer truck cannot go and mix on site. The total length of the concrete mixer and batch plant is 35 feet with the tongue removed.


The standard Auto Control feature controls sand, rock, water, and cement (7SL silo) by weight, and can be calibrated in English or Metric units.


The rotating drum design provides a superior finished product compared to volumetric concrete mixer designs.

The Flow-Through Drum design rapidly mixes low slump concrete. Dry material enters on one side of the drum and discharges wet concrete on the opposite side. The concrete mixes horizontally, rapidly, and consistently. All EZ horizontal mixer designs mix zero slump concrete loads consistently.


The flow-through drum design is superior to standard closed drum designs. Cycle times are 7 to 10 minutes. The standard HH-4 holding hopper ensures the mixing process is continuous for pumping output. 


The EZ 4-12-2 frees you from the time, distance, and schedule limitations of third-party concrete batching plants. This portable concrete mixer enables you to load and mix your own specific concrete recipe however, whenever, and wherever you want it. 

The EZ 4-12-2 includes an Auto Control processor, load scales with the Rock Hopper and Sand Hopper, cement control (if the 7SL or 7SL-12k Silo is used), and water control.

Portable Concrete Mixer Batching Plant Mix Right 1280i Control Panel by Right Manufacturing Systems Inc.

Auto Control 1280i Computer

The Right Manufacturing Systems programmable 1280i computer comes pre-programmed for user convenience.  Over 100 different designs can be input for batching ease.  Materials are weighed individually per batch and weighed by the decumulation method – weight is being added as material comes out of the bins to achieve the target weight of rock, sand, cement, and water individually on a per load basis.  This is the most reliable and accurate way of consistently batching each load of concrete.  Print tickets are an option with the Auto Control.

Portable Concrete Batching Plant Mix Right Load Cell by Right Manufacturing Systems Inc.

Load Cells

Includes weight scales on the single hopper for more accurate measurement of sand, gravel, and cement.  Materials are weighed individually to achieve the correct weights of rock and sand on a per load basis as you load the hopper to your specified mix design.  Or, the bin can be filled completely with premix gravel and sand and the bin can be unloaded easily by a decumulation method with the weight scales.


Diesel Engine – Water Cooled

Portable Concrete Mixer Batching Plant Mix Right 300 Gallon Auto Tank by Right Manufacturing Systems Inc.

500 Gallon Water Tank With Hydraulic Water Pump

The hydraulic water pump teamed with the 500 gallon auto tank gives you the freedom of a no worry water source.  Water may be sourced from a stream, pond, or the large water tank.

Portable Concrete Mixer Batching Plant Mix Right Hot Water Boiler by Right Manufacturing Systems Inc.

Hot Water Boiler

Portable Concrete Mixer Batching Plant Mix Right Pressure Washer by Right Manufacturing Systems Inc.

Pressure Washer Controls

Water System Options

Hot Water Boiler
Pressure Washer Controls

Portable Concrete Batching Plant 5+ Cubic Yards Mix Right 2CL-5 3 Position & Portable Concrete 2 Cubic Yards Mixers 2DH-2 by Right Manufacturing Systems Inc.

Custom Paint

All models are painted white.  Other paint schemes are additional.

We offer you the motor choice that will work best for your operation.



The diesel engine gets better fuel economy than the gasoline engine. A good choice for mines, yards and quarries where diesel fuel is more readily accessible.



The electric motor is the most reliable and efficient motor system. It requires a minimum of 480 three phase power. We will build the electrical panel to your power requirements.



The combination electric and diesel motor system is the most versatile choice. This option enables you to optimize the most efficient power source available.

= standard = optional
ModelEZ 4-24-2
30-36 YD³ Per HR
EZ 4-12-2
28-34 YD³ Per HR
EZ 2-8-2
18-22 YD³ Per HR
EZ 1-5-2
8-10 YD³ Per HR
Auto Control
Hopper Scales
Pallet Platform
Pallet Jack
Water Pump
Electric Motor w/ Panel
Pressure Washer
Hot Water (Diesel Fuel)
Bag Breaker
Silo Chute
Diesel Engine
Auto Water Tank
Automatic Wet Batch Plant ComboWeightOverseas Shipping Container
EZ 4-24-219,500 lb45 ft High Cube
EZ 4-12-214,000 lb45 ft High Cube
EZ 2-8-211,500 lb40 ft High Cube


Holding Hopper

Holding Hopper Mix Right HH3 in Right Manufacturing Systems Inc.

ATTENTION! This machine CAN NOT BE TRANSPORTED WHILE LOADED WITH WET OR DRY MATERIALS.  It must be stationary for operation.

The less expensive EZ 4-5 with no Auto Controls is available as a comparable alternative model.  Its hopper is instead measured with sand and gravel volumetrically – bucket of your loader.  The water meter measures exact water readings for yardage control.  Cement is loaded into the mixer with a silo or directly onto the belt with the standard bag breaker.  Print tickets are not available with this model.  This machine is less accurate, but effective where spec concrete is not required.