SINOMACH ZG3210-9C Crawler Excavator

SINOMACH ZG3210-9C — 21-ton hydraulic crawler excavator

SINOMACH ZG3210-9C is a medium-class hydraulic crawler excavator designed for a wide range of earthmoving, construction, and infrastructure applications. With an operating weight of approximately 21 tons, this model is engineered for stable, efficient, and reliable performance during daily working cycles under varying site conditions.

The ZG3210-9C combines balanced engine power, precise hydraulic control, and a robust structural design, making it a versatile solution for contractors, construction companies, and municipal service providers that require dependable equipment for medium-duty tasks.

Purpose and applications

SINOMACH ZG3210-9C is well suited for:

• trenching and foundation excavation;

• general earthmoving and soil handling;

• loading of soil, sand, gravel, and construction materials;

• site preparation and grading works;

• road and infrastructure projects;

• municipal and industrial construction tasks.

Thanks to its compact overall dimensions and good maneuverability, the excavator can operate efficiently both on open construction sites and in confined working areas.

Engine and performance

The excavator is powered by a Cummins 6BTAA5.9-C150 diesel engine, delivering a rated output of 112 kW (approximately 152 hp). This engine is widely used in construction equipment and is known for its durability, fuel efficiency, and stable performance under load.

The power unit provides:

• reliable energy supply to the hydraulic system;

• consistent digging and loading performance;

• optimized fuel consumption during long working shifts;

• long service life and ease of maintenance.

Hydraulic system

The hydraulic system of the SINOMACH ZG3210-9C is designed to provide smooth, accurate, and responsive control of all working functions. It ensures stable cycle times and precise operation during digging, slewing, and traveling.

Balanced hydraulic performance allows the operator to maintain full control over the boom, arm, and bucket, which is especially important for accurate excavation and finishing work.

Working equipment

The excavator is equipped with a standard 0.91 m³ bucket, optimized for handling various types of soil and bulk materials. The reinforced boom and arm are designed for long-term operation under continuous load.

The working equipment provides:

• sufficient digging depth for typical construction tasks;

• a wide working radius for efficient site coverage;

• convenient dumping height for truck loading operations.

High digging forces enable effective work in compacted and medium-hard soils without loss of productivity.