WJ-4 underground loaders are mainly used in underground mine tunnels to shovel and transport loose materials after blasting. It can also be used in tunnel projects such as railways, highways and water conservancy projects, and is suitable for tunnel operations with medium cross-sections above 3.5 m×3.5 m.

Advantages and features

●The Underground loaders is equipped with a low-speed motor of the SCANIA company with high torque with a liquid cooling and low fuel consumption, low pollution.

●The power transmission system adopts DANA gearbox and torque converter, DANA spring brake hydraulic release drive axle, and mining cut-resistant pneumatic tires.

●The service brake adopts wet multi-disc spring brake hydraulic release brake; MICO liquid filling valve and brake valve; the parking brake adopts spring brake on the drive axle.

●The frame is a central articulated structure, and the rear axle swings left and right around the center of the frame to improve the adhesion performance of the entire machine.

●The steering system is a hydraulic power steering system with double-side steering cylinders.

●All main pins of the scraper have adopted heat treatment such as high-frequency quenching, which greatly improves the reliability of the pins.

●All hydraulic hoses and cables in the vehicle are covered with flame-retardant sheathing tubes and wax tubes to prevent fires caused by various oil products splashing after the hydraulic hoses and diesel pipes rupture.