SEM 518 / 520 / 522 Soil Compactors for Sale — 18T to 22T, Weichai Power
SEM 518, 520 and 522 single-drum soil compactors cover 18,000–22,000 kg operating weight for road, railway, airfield and industrial-yard compaction. Eccentric vibe-pod vibration extends vibratory-system life by 50%, a closed-center hydraulic system improves efficiency by 20%, and a Proportional Torque Differential axle delivers 34% gradeability. Weichai WP6G engines, dual high/low amplitude, and a full option list (padfoot drums, tiltable cab, high-ambient cooling) make the range adaptable to hot, cold and demanding sites. Available through ArcherMach with export documentation and spare-parts support.
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Product Details
ArcherMach supplies the SEM single-drum soil compactor range — three models from 18,000 to 22,000 kg operating weight, engineered for road bases, railway embankments, airfield runways and industrial-yard compaction. The eccentric vibe-pod design delivers stable amplitude and extends vibratory-system life by 50%, while a closed-center hydraulic system and a Proportional Torque Differential axle give the machines strong traction and efficiency on tough ground. Every unit is export-ready with full documentation, pre-shipment inspection and spare-parts support for distributors in Africa, the Middle East, South America and Southeast Asia.
SEM Soil Compactor — Full Product Range
Main Specifications
Eccentric Vibe Pod Design
The vibratory system uses a sealed eccentric vibe pod in which steel shot moves inside a closed eccentric block. The combined position of the steel shot and the eccentric weight produces a stable, reliable amplitude and reduces impact on the motor, extending the maintenance interval of the whole vibratory system.
Two operating modes are available: in high-amplitude mode the steel shot and eccentric weight combine to deliver maximum centrifugal force for dense soils, while in low-amplitude mode the steel shot is offset to produce a lower force for thinner lifts and surface finishing. A completely sealed eccentric gear eliminates contamination and prolongs bearing life — extending vibratory-system service life by over 50%.
Isolated Modular Cooling System
An isolated modular cooling system keeps engine and hydraulic temperatures stable. A shunt tank maintains constant system pressure and gives the operator an easy visual check of the coolant level.
A suction-type fan pulls low-temperature air through the radiator for superior heat rejection. An optional high-ambient cooling package allows the machine to keep working in ambient temperatures up to 49 °C — suitable for Middle East and African site conditions.
Closed-Center Vibratory Hydraulics
A closed-center hydraulic system improves efficiency by 20% over an open-center layout, reduces oil contamination and prolongs hydraulic-component life. It holds higher working pressure with smaller energy loss, allows simpler hose routing and needs a smaller hydraulic tank — lowering maintenance cost.
Optimised hose routing extends hose life, and the machine can be equipped with remote fleet monitoring and telematics so distributors and owners can track location, hours and fault codes for better equipment management.
Powertrain & Traction
An electronically controlled transmission and an axle with a Proportional Torque Differential (PTD) make shifting easier and reduce operator fatigue. The PTD automatically applies torque to the wheels according to ground conditions, improving overall traction. Gradeability reaches 34% (versus around 30% for typical competitors), and optimised transmission ratios give a higher first-gear travel speed for faster cycling on the job.
Operator Monitoring & Safety
A digital vibratory frequency meter continuously displays the live compaction frequency so the operator can select the right setting and avoid over-compaction. The machine diagnoses system issues and alerts the operator through a three-level alarm system with warning lights and audio alarms.
The dashboard shows transmission oil temperature, battery voltage, working hours and compaction frequency at a glance — keeping the operator informed and protecting the machine.
Applications
Optional Accessories & Work Tools
Customization & Supply Program
ArcherMach supplies genuine SEM soil compactors and supports distributor programmes with flexible configuration and export services. Choose engine and emission tier, cab and cooling options to match your market, and rely on our pre-shipment inspection, container packing, spare-parts lists and full shipping documentation.
Why Source SEM Compactors from ArcherMach
SEM is a recognized Chinese road-building name with a broad global user base and proven compaction performance.
Sealed eccentric vibe pod with dual high/low amplitude extends vibratory-system life by over 50%.
Closed-center hydraulics improve efficiency by 20% and cut contamination versus open-center systems.
Proportional Torque Differential axle delivers 34% gradeability for steep or soft ground.
High-ambient cooling to 49 °C, cold-start preheater and padfoot drums adapt to clay, sand and hot climates.
ArcherMach provides pre-shipment QC, container packing, spare parts and responsive after-sales support.
Interested in the SEM 518 / 520 / 522 Soil Compactors?
Factory-direct pricing, pre-shipment QC, worldwide DDP delivery. Tell us your tonnage and market — we prepare a quotation.
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