In the field of self-loading concrete mixers, the LM series has become a common choice for small and medium-sized projects due to its multi-scenario capacity designs. The engine configuration of different models directly determines the power performance and adaptability of the equipment. Ranging from small-capacity models with 2,200 liters to medium-capacity models with 5.8 cubic meters, the LM series achieves precise coordination between power and capacity by matching different engine models from two major brands, Yuchai and Yunnei. The following is an analysis of the core configurations of each model.
LM2200 Model: 2,200L Small Capacity with Yunnei YN27GBZ Engine
The LM2200 model, with a mixing capacity of 2,200 liters (2.2 cubic meters), is designed for "small-batch operation" scenarios such as rural self-built houses, courtyard hardening, and municipal minor repairs. Its power core is the Yunnei YN27GBZ engine.
With a 2.7L displacement, this engine provides just enough power to match the full-process operation of the 2,200L capacity: during loading, it smoothly drives the hopper to lift materials without wasting fuel due to excessive power; during mixing, it maintains low-speed drum operation to prevent material splashing; during unloading, it precisely controls speed to meet scenarios like “local pouring” in home decoration where material quantity is strictly controlled. Additionally, the lightweight and compact structure of the YN27GBZ engine minimizes the space occupied by the vehicle body, allowing the LM2200 model to easily navigate narrow rural lanes and tight community corridors, solving the problem of large equipment “unable to enter or turn around.”
LM3200 Model: 2,810L Small Capacity with Yunnei YN33GBZ Engine
Targeting "small-batch and high-frequency" scenarios such as rural infrastructure and small-scale repairs, the LM3200 model has a capacity of 2,810 liters (approx. 2.8 cubic meters) and is equipped with the Yunnei YN33GBZ engine.
With a 3.3L displacement, the YN33GBZ engine provides precise power for the 2,810L capacity: during loading, it easily lifts 2.8 cubic meters of sand, cement, and other materials; during mixing, it maintains stable drum rotation to ensure uniform concrete mixing; during unloading, it controls speed gently to reduce material loss. Its compact structure, combined with the small body of the LM3200 model, allows it to adapt to narrow field paths and municipal sidewalks. Key components are made of wear-resistant materials to withstand dusty, bumpy rural sites, and its simplified structure with low failure rate enables easy maintenance, reducing downtime even in small sites with limited maintenance conditions.
LM4200 Model: 4,248L Small-Medium Capacity with Yuchai YCD4T22T-105 Engine
Covering small and medium-sized projects, the LM4200 model has a capacity of 4,248 liters (approx. 4.25 cubic meters) and is powered by the Yuchai YCD4T22T-105 engine. The "T" indicates turbocharging technology, which enhances fuel combustion efficiency.
The turbocharged, 4-cylinder engine outputs rated power suitable for the 4,248L capacity: during loading, it drives the hopper smoothly without jamming; during mixing, it maintains uniform drum rotation to prevent local concrete agglomeration; during unloading, it precisely controls speed to meet "small-batch, multiple-times" needs of small projects. The compact engine size reduces vehicle body space, allowing the LM4200 to maneuver flexibly in narrow rural roads and courtyards. Yuchai has reinforced key components for engineering scenarios, enabling the engine to withstand high-load, dusty environments, lowering failure risks and ensuring continuous operation.
LM5000 Model: 5m³ Medium Capacity with Yuchai YCD4J22-110 Engine
For medium workload needs, the LM5000 model has a 5 cubic meter capacity and continues the LM series’ use of Yuchai engines, equipped with the Yuchai 4105 turbocharged engine (YCD4J22T-110).
The turbocharged 4-cylinder engine with 105mm bore delivers strong power: during loading, it handles the lifting load of 5 cubic meters of materials; during mixing, it maintains stable drum rotation to ensure uniform mixing; during unloading, it quickly delivers materials, avoiding power shortages and energy waste. The engine’s low-speed, high-torque characteristic ensures smooth operation on uneven surfaces and slight inclines, while its compact structure minimizes body space usage, balancing flexibility and capacity requirements.
LM5500-L Model: 5.8m³ Medium Capacity with Yuchai YCD4J22-110 Engine
As one of the larger medium-capacity models, the LM5500-L has a 5.8 cubic meter capacity and shares the same Yuchai 4105 turbocharged engine (YCD4J22-110) as the LM5000, showing the adaptability of the same engine across multiple capacities.
For high-load demands of 5.8 cubic meters, the turbocharged engine delivers ample power: during loading, it efficiently lifts the total amount of materials; during mixing, it maintains stable drum rotation to ensure uniform concrete; during unloading, it delivers materials quickly, shortening single-cycle operation time. The compact 4-cylinder, 105mm-bore structure ensures large capacity while keeping vehicle size manageable for most sites. Yuchai’s reinforced components allow the engine to withstand long-term high-load operation, reduce maintenance costs, and ensure project progress.
If you experience engine failure or need replacement assemblies for LM series mixers, or if you require engine spare parts (such as turbochargers, cylinder blocks, pistons, etc.), we provide original compatible assemblies and parts for all models (Yunnei YN27GBZ, YN33GBZ; Yuchai YCD4T22T-105, YCD4J22-110,YCD4J22T-115), ensuring compatibility and stable performance.
If you require engine maintenance or complete mixer truck repair, please contact us. We offer professional technical support to minimize downtime and ensure smooth project operation.
If you need spare parts for LM series self-loading concrete mixers or engine components for Yuchai and Yunnei engines, please feel free to contact us.
English
Arabic
French
Latin
Russian
Spanish
Thai