CPLN-1 Planetary Concrete Mixer

The CPLN-1 represents CONSTMACH's answer to the concrete industry's demand for speed, consistency, and reliability in dry-cast production. This planetary mixer has been refined through years of real-world application, incorporating the small but crucial details that separate adequate equipment from exceptional machinery. What makes this design particularly effective is its countercurrent mixing principle, where rotating arms travel around a central axis while spinning on their own, ensuring complete coverage of the mixing pan in just a few revolutions.

This intensive mixing action delivers remarkable results. Once water enters the mix, most concrete types reach homogeneity in 30 seconds or less. That's not just impressive on paper—it translates directly to higher plant throughput and better concrete quality. The strength gains are measurable, and many operators find they can reduce cement content by 10 to 15 percent compared to conventional pan or drum mixers while maintaining the same specifications. For dry-cast applications, especially zero-slump mixes that other designs struggle with, the planetary configuration proves superior to both turbine and twin-shaft alternatives.

The CPLN-1's pan capacity deserves attention. CONSTMACH engineers this mixer with up to 30 percent more volume than competing models rated for similar output. This isn't excess capacity—it's smart design. The mixer handles its full rated load properly without straining, and it performs equally well whether you're running complete batches or smaller partial loads. The three-armed mixing stars do the actual work, which means paddles only assist with discharge rather than mixing itself.

Durability defines every mechanical aspect of this equipment. The large reduction gearbox runs in an oil bath, staying cool even during continuous operation. Many manufacturers use compact commercial gear units squeezed into tight, poorly ventilated spaces that overheat under sustained use. CONSTMACH backs their gearbox design with a 5-year or 10,000-hour guarantee because the engineering supports that confidence. The motors and gears can handle occasional startups under full load without needing hydraulic couplings, though regular practice still calls for proper loading procedures.

Wear protection on the CPLN-1 reflects practical experience with abrasive materials. The mixer uses 15mm Ni-Hard cast iron liner tiles and mixing blades as standard, providing longer service life than softer alternatives. Floor tiles are small and identical, keeping replacement costs reasonable and allowing individual tile changes rather than complete liner replacement. For operations dealing with particularly aggressive materials, chromium carbide cladded plates and paddles are available, and rubber components can be specified for extreme abrasive aggregate applications.

The discharge system uses rubber-sealed doors that operate smoothly through hydraulic mechanisms, providing precise control during concrete release while eliminating water leakage. Standard configuration includes one discharge door, but the design accommodates up to four doors for specialized plant layouts. Complete cleanout happens without additional mechanisms—the mixer's geometry and door arrangement handle this naturally.

Access and safety features show attention to operator needs. Smaller CPLN models use a large half-moon cover while bigger units up to MP3750 employ wide segmented covers, both providing quick, safe access for cleaning. The high-security locking cover latch disables mixer startup, adding a fail-safe layer even if someone forgets the separate lockout switch. Electrical systems meet UL requirements with CE motors standard and UL motors available on request.

The CPLN-1's specifications tell the capability story: 1,500 liters charging volume produces 1,250 liters of fresh concrete, compacting to 1,000 liters of finished product. A 45kW motor drives the mixing action through those proven gearbox components. Wear plates include 15mm Hardox 450 on the bottom, 8mm ST-52 on the side body, and 25mm Ni-Hard on the mixing arms. Both hydraulic discharge doors and maintenance door safety switches come standard, not as expensive options.

This mixer delivers what concrete producers actually need: consistent quality, predictable operation, and longevity that justifies the investment. CONSTMACH positions the CPLN-1 as the best value in its class, which is a claim backed by the combination of higher capacity, proven mechanical design, comprehensive wear protection, and straightforward maintenance access. For operations focused on dry-cast concrete production where mixing intensity matters more than gentle tumbling, the planetary design principle makes technical sense, and the CPLN-1 executes that principle well.