Welcome: Concrete Crusher & Portable Rock Crusher For Sale-Sandman Crusher

The PE250×400 diesel-powered portable rock crusher for sale is a primary piece of equipment for small-scale mobile coarse crushing. It integrates three core components: the PE250×400 jaw crusher unit, a diesel power unit, and a wheeled mobile chassis. It can be configured with a feed hopper, discharge belt conveyor, and vibrating screen. Requiring neither a fixed plant nor an external 380V industrial power supply, this portable rock crusher can be driven directly to mountainous areas, construction sites, or demolition zones for on-site crushing. The portable rock crusher is widely suitable for operations in areas without grid access, such as small-to-medium sand and gravel yards, construction waste recycling, remote mining sites, and road infrastructure projects. With its compact structure, flexible mobility, and low maintenance requirements, it offers exceptional cost-performance value for mobile coarse crushing projects.

Technical Parameters

Note: Technical data are subject to change without prior notice.

I. Core Crushing Unit: PE250×400 Jaw Crusher

Serving as the machine's core crushing mechanism, the jaw crusher employs the classic toggle-action compression crushing principle. It features a 250mm × 400mm feed opening, accepts a maximum feed size of 210mm, and offers a standard processing capacity of 10–20 tons per hour. The discharge opening is adjustable between 20mm and 80mm, allowing for customized product sizes to meet various output requirements, such as roadbed gravel, concrete aggregates, and backfill stone.

The portable rock crusher is equipped with large-diameter balanced flywheels that optimize dynamic balance, resulting in minimal operational vibration and reduced noise. A spring-loaded tie-rod adjustment assembly at the rear allows for quick discharge gap adjustments using shims; the operation is simple, enabling a single person to change the output size in just five minutes. The deep V-shaped crushing chamber is designed with no "dead zones," ensuring continuous compression and crushing of material from inlet to outlet without stagnation or clogging. This design delivers higher feeding efficiency compared to similar models, prevents machine stoppages caused by large rocks, and is suitable for crushing irregular raw stone, demolition concrete blocks, and run-of-mine stone. Weighing approximately 2.9 tons, the machine features a simple crushing structure with few potential failure points; it requires only periodic greasing, resulting in a minimal daily maintenance workload.

II. Power Unit: Diesel Engine Drive System

This portable rock crusher comes standard with a diesel power system, eliminating reliance on external power sources. Designed for use in rugged mountainous terrain, remote construction sites, emergency repair scenarios, and off-grid mining areas, the portable rock crusher is available in both single-cylinder and multi-cylinder diesel configurations to suit specific production capacity requirements. Portable rock crusher features a standard 15kW-class diesel engine with power output precisely matched to the jaw crusher's rated power. The pulley drive structure ensures minimal transmission loss and stable power delivery; it requires no three-phase power for startup and offers dual starting modes (manual crank and electric start), enabling rapid operation in cold or remote environments.

The diesel unit is independently mounted on a shock-absorbing base on the right side of the chassis, utilizing thickened rubber pads to isolate engine vibrations from the main crushing unit and minimize wear caused by resonance. A high-capacity fuel tank allows for 8–10 hours of continuous operation on a single fill, reducing the need for frequent refueling. The exhaust system includes a noise-reduction muffler to ensure compliance with noise regulations during field operations, while a protective shroud shields the engine from rain and debris, extending the unit's service life.

An upgraded dual-power (diesel-electric) model is available, featuring an optional 15kW three-phase electric motor. This allows for switching to mains electricity in grid-connected areas to lower fuel consumption and operating costs, while enabling a quick switch to diesel power in off-grid locations—offering a balance of operational flexibility and cost-efficiency. The transmission system utilizes heavy-duty V-belts and large pulleys to deliver ample torque; the setup resists belt breakage during brief overloads caused by ultra-hard materials, while the flywheel stores energy to buffer impacts and prevent the engine from stalling. III. Load-bearing and Mobility Unit: Integrated Mobile Tire-Mounted Chassis

The entire portable rock crusher is integrated onto a heavy-duty steel mobile chassis. Constructed from welded national-standard thickened I-beams and channel steel, the chassis undergoes overall annealing to relieve welding stress, ensuring excellent load-bearing and torsional rigidity; it resists twisting or deformation during fully loaded transport. Support legs are pre-installed at the base; during operation, these are lowered to the ground to bear the load, completely relieving pressure on the tires and ensuring stable, vibration-free operation that prevents debris scattering or chassis shifting.

The mobility system comes standard with heavy-duty off-road agricultural tires (available in dual-wheel or four-wheel configurations). Featuring deep treads and superior traction, the unit navigates smoothly across muddy tracks, rocky mining roads, and uneven construction sites. A standard towing hitch is welded to the front, allowing direct towing by tractors, loaders, or pickup trucks. Short-distance relocation requires no disassembly, enabling site moves within 30 minutes and eliminating the high costs associated with infrastructure, assembly, and hoisting for stationary crushing plants—truly enabling "start-up upon arrival."

With overall dimensions of approximately 1900×1500×1850mm, the unit is compact enough for transport on standard trucks, allowing unrestricted access to narrow rural roads and confined construction sites. An optional foldable discharge conveyor frame allows the unit to be narrowed for transport, reducing shipping width and costs.

III. Overall Advantages and Application Scenarios of portable rock crusher

Core Advantages

1. Off-grid operation, universal adaptability: Powered independently by a diesel engine, the unit enables all-weather crushing in areas without grid access—such as mountainous regions, demolition sites, remote mining areas, and river dredging projects—unconstrained by power lines.

2. High mobility, zero infrastructure investment: The tire-mounted chassis allows for "stop-and-go" flexibility without the need for poured concrete foundations. Setup and commissioning take less than two hours, significantly reducing upfront investment for small-scale or short-term projects.

3. Integrated design, simple operation: Crushing, power, and mobility systems are fully integrated. A single operator can manage the entire process—feeding, crushing, and discharging—without the need for specialized technicians or a steep learning curve. 4. Low O&M Costs: The jaw crusher features a simple structure; wear parts are standardized and easily sourced; diesel engine components are widely available. Routine maintenance involves only oil changes and greasing, resulting in low consumable costs.

5. Versatile Adaptability: It can be paired with a hopper, belt conveyor, and vibrating screen to form a simple mobile crushing and screening line. A single feed run produces finished aggregates of various specifications, meeting diverse needs for roadbeds, construction materials, and backfilling.

IV.Mainstream Application Scenarios for the portable rock crusher

Primary crushing of bluestone, limestone, and river pebbles at small-to-medium aggregate yards; recycling and crushing of urban demolition waste, concrete blocks, and bricks; on-site processing of tunnel muck from road, water conservancy, and tunnel projects; primary processing of iron ore, quartz, and granite at small mountain mines; farmland consolidation and riverbed stone crushing; emergency relief operations and temporary infrastructure crushing tasks.

V. Key Points for Operation and Maintenance

Before operation, check engine oil and diesel levels before starting, and allow the engine to idle for 3–5 minutes to warm up before feeding material; strictly limit feed size to under 210mm and prevent metal debris from entering the crushing chamber to avoid damaging the jaw plates; clear residual stone from the crushing chamber daily after shutdown; apply grease weekly to eccentric shaft bearings, drive belts, and engine bearings; before long-distance relocation, tighten belts and secure the hopper and conveyor mechanisms to prevent component loosening or damage caused by transport vibrations.

Overall, the PE250×400 diesel portable rock crusher for sale fills a gap in the market for small-scale mobile crushing equipment through its integrated design—combining stable crushing performance, independent diesel power, and a wheeled mobile chassis. Balancing production capacity, mobility, and cost-efficiency, portable rock crusher is an ideal primary crushing solution for small-to-medium-scale field crushing projects.