جديد ممهدة الطرق SEM 922F

The SEM 922F is a brand-new 220hp medium-duty motor grader under SEM (Shandong Engineering Machinery, a Caterpillar subsidiary), designed for heavy-duty road construction, infrastructure and land finishing projects. It integrates mature Caterpillar axle technology, energy-saving SDEC power unit and precise PPPC proportional hydraulic system, balancing powerful traction, precise grading control and low operation cost. All units are zero-hour brand new with complete factory warranty and full standard attachments including front dozer blade and rear multi-tooth ripper.
Core Advantages & Key Features
Reliable Power & Low Fuel Consumption
Equipped with SDEC SC9D220G2 diesel engine, rated power 162kW (220HP) @2200rpm, available in Tier 2 / Stage IV emission versions. Built-in ECO energy-saving mode cuts fuel consumption during light-load work; optimized axle load distribution greatly improves drawbar traction up to 99kN for tough soil and mine ground conditions.
Precision PPPC Hydraulic System
Adopts world-class variable displacement piston pump plus Proportional Priority Pressure Compensation (PPPC) valve. Hydraulic flow matches load demand dynamically, supporting smooth simultaneous compound movements of blade, circle and ripper with minimal energy loss and heat generation. Blade float function comes as standard, automatically following ground contours to reduce operator fatigue and protect pavement surfaces.
The hydraulic pump is directly mounted to transmission without intermediate drive shaft, lowering machine noise and cutting daily maintenance points.
CAT Tandem Axle for Superior Durability
Rear tandem axle independently designed and manufactured by Caterpillar, adopting four-planet gear structure with strong load-bearing capacity, anti-overload and long service life, greatly lowering long-term repair cost compared with generic graders.
Dual-circuit pneumatic disc brake system separates front/rear and left/right braking circuits to guarantee reliable safety under heavy load.
Comfort ROPS Operator Cabin
Front-mounted wide-view ROPS cabin with full panoramic tempered glass, eliminating blind spots for blade, front wheels and ripper during articulation work. Ergonomic control layout, large shock-absorbing seat and low interior noise reduce fatigue for all-day shifts. Centralized 3-level fault alarm monitor clearly displays real-time machine status for easy troubleshooting.
Easy Access Maintenance
Large one-piece engine hood for full engine compartment access; centralized service ports for oil, fuel and hydraulic filters at ground level. Standard large-diameter hydraulic cooling fan with optional 50℃ high-temperature cooling package fits tropical, desert and mining high-heat working environments.