CTS - 5 | Twin Shaft Concrete Mixer

CTS-5 Twin Shaft Mixer is the flagship of the CONSTMACH CTS range, the largest-capacity model built for plants whose daily output reaches the highest production tiers. It accepts a charging volume of 7,500 lt, produces 6,250 lt of fresh concrete and discharges 5,000 lt of compacted concrete in each batch. At five cubic metres per cycle the CTS-5 is dimensioned for major central-mix ready-mix plants, large dam and roller-compacted concrete (RCC) placements, and the highest-volume precast factories, where the mixer must sustain throughput that smaller frames cannot reach.

The machine is driven by two 90 kW motors, the most powerful pairing in the family, for a combined 180 kW. This torque is what allows the CTS-5 to turn over a full 7,500 lt charge of stiff, aggregate-rich RCC or high-strength structural concrete and to restart under load through continuous, around-the-clock casting. The two horizontal shafts counter-rotate, throwing material from each side toward the centre where the streams collide and intermix; jetted water is absorbed rapidly so the cement slurry coats every aggregate particle uniformly, producing a homogeneous 5 m³ batch in the short cycle that keeps a large central plant at its rated output.

Wear protection is the heaviest in the range. The side body uses 25 mm wearing plates, the main body steps up to 30 mm wearing plates, and the mixing arms carry 30 mm wearing plates at the highest-abrasion points. The 30 mm main-body liner, the thickest specified across the CTS models, is matched to the enormous mass of aggregate that passes through the trough every cycle on a 5 m³ machine and to the abrasive duty of dam-scale RCC; heavier liners translate directly into fewer changeouts and more productive hours on a plant that cannot easily stop. All liners remain individually replaceable so the trough body stays in service over a long working life.

An automatic lubrication system meters grease to the four heavily loaded shaft bearings and seals on a fixed schedule. On a 180 kW machine in continuous service, dependable bearing lubrication is the single most important factor in avoiding unplanned downtime, and automating it eliminates the risk of a missed greasing during extended shifts. A hydraulic discharge door empties the 5 m³ batch rapidly and cleanly so the trough is immediately ready to recharge; at this scale, even a small delay in discharge multiplied across a full shift represents a meaningful loss of output, so fast door action is integral to the design.

A maintenance door safety switch interlocks the inspection door with both drives, stopping both shafts whenever the door is opened. On the most powerful machine in the range, a positive interlock that guarantees neither shaft can rotate during cleaning or liner inspection is fundamental to crew safety.

In service, the CTS-5 is the mixing centre of the largest central ready-mix plants supplying flagship infrastructure, of RCC plants placing concrete for dams and major pavements, and of high-volume precast factories casting bridge girders, large segments and heavy panels. Its 5 m³ batch and twin 90 kW drives top the CTS family above the CTS-4, making it the selection for projects that demand the maximum sustainable output. Integrated with CONSTMACH heavy-duty weighing, dosing and conveying systems, the CTS-5 anchors a high-capacity central concrete production plant.