1. Core Features & Advantages
2. 4WD skid steer wheel chassis, flexible movement in narrow roadways
   Four-wheel drive skid steering design with min turning radius 3600mm. Wheelbase 1700mm, track width 1270mm, min ground clearance 240mm. It runs smoothly on gravel & uneven underground ground, easy to turn in small mine roadways, and can climb slopes up to 19° steadily under heavy load.
3. National IV explosion-proof diesel engine, no external cable required
   Model YC3890-T480 explosion-proof diesel engine, 66kW rated power, 2200 rpm, matched with 120L large fuel tank. It supports long-time continuous operation without trailing power cables, free to move and shift positions underground.
4. Omni-directional hydraulic breaker, full coverage hazard clearing
   75kg dedicated scaling hammer with max impact energy 350J, impact frequency 10–16Hz, 53mm chisel. The hammer swings ±90° vertically and horizontally, clearing loose rock on roof & side walls without blind areas.
5. Front dozer blade for stable operation
   Lower the front blade during scaling to lock the machine firmly, eliminate body shaking under impact, greatly improve operation stability and safety.
6. Hydraulic pilot control + dual brake protection
   Light hydraulic pilot operation; equipped with full hydraulic service brake & sealed wet parking brake. Brake performance stable under damp mine environment. Standard dry powder fire extinguisher fully meets underground explosion-proof safety standards.
7. Tilt-adjustable operator cab
   The cab can be tilted to fit operators of different heights, wide vision to reduce visual fatigue during high-place scaling work.
8. Stable hydraulic system for long-hour heavy work
   Hydraulic working pressure 10–14MPa, flow 20–30L/min, 130L large oil tank for consistent oil supply, low overheating and leakage risk during continuous heavy operation.
9. Mechanized operation replaces manual high-altitude work
   Single operator finishes all rock scaling procedures, completely avoid rock fall injury risks, cut labor cost of high-risk underground posts and improve hazard removal efficiency.
10. Standardized spare parts for easy overseas maintenance
    Highly universal components, standardized wearing parts, convenient spare parts procurement and on-site replacement for overseas mining sites, reduce maintenance downtime.
11. Product Description

The XMPYT-66/350 scaling jumbo is professional safety equipment for removing loose dangerous rock inside mine roadways. Adopting diesel four-wheel-drive skid chassis, it is specially used to clear loose pumice and hazardous rock on tunnel roof and side walls after blasting to prevent rock fall accidents, widely exported to global metal mines and tunnel construction projects.
The machine weighs 6500kg with transport dimension 5900×1520×2050mm and maximum working reach 6000mm. Wheelbase 1700mm, track width 1270mm, minimum ground clearance ≥240mm for stable travel on underground gravel ground. Powered by YC3890-T480 National IV explosion-proof diesel engine (66kW, 2200 rpm) with 120L fuel tank, it enables long continuous operation without external power cables. Forward speed 7.7km/h, reverse speed 3.8km/h, max climbing capacity 19°, minimum turning radius 3600±100mm for flexible maneuvering in narrow tunnels.
It adopts hydraulic pilot handle control and 4WD skid steering system, fitted with full hydraulic service brake and fully enclosed wet parking brake. The tiltable operator cab is equipped with standard dry powder fire extinguisher to meet all underground safety requirements. The working head is a 75kg hydraulic scaling hammer with 350J impact energy, 10–16Hz impact frequency and 53mm chisel. The hammer swings ±90° up/down and left/right to clean all dangerous rock without dead zones. The hydraulic system runs at rated pressure 10–14MPa and flow 20–30L/min with a 130L hydraulic oil tank for steady oil supply. The front dozer blade can be lowered to anchor the machine during scaling for stable operation.
Integrated all-in-one scaling function allows one single operator to finish hazard removal, fully replacing traditional manual high-place rock clearing and drastically cutting underground safety risks. All components are highly standardized for easy spare parts supply and on-site maintenance at overseas mines. It is essential dedicated safety equipment for roadway hazard elimination after excavation.

III. Technical Parameters

1. Main Machine Parameters

2. Hydraulic Scaling Hammer Parameters

3. Chassis & Braking System

4. Explosion-Proof Diesel Engine