Yan'an, China

Yan'an mining area faces two major challenges in ultra-thin seams (about

延安矿区煤层薄（约

6m):

6米），面临两大挑战：

Extremely limited space prevents traditional equipment entry, posing high safety risks;

空间极度受限，传统设备无法进入，安全风险极高；

Complex coal rock structure contains large amounts of f8 hardness hard gangue, causing frequent cutting tooth breakage and gearbox damage with high maintenance costs.

煤岩结构复杂，夹杂大量f8硬度坚硬矸石，截齿断裂、齿轮箱损坏频发，停机维修成本高。

MG300-700-BWD ultra-thin seam bridge shearer features two core technologies:

MG300-700-BWD极薄煤层过桥采煤机配置两大核心技术：

Millimeter-level encoder positioning and remote automated control system achieving unmanned mining, solving space limitation and safety risks;

毫米级编码定位器与远程自动化控制系统，实现无人化开采，彻底解决空间受限和安全风险问题；

Military-grade cutting unit with double spiral drum providing ultra-strong cutting capability, specifically designed for f8 hardness coal rock with stable operation in high-hardness conditions.

军工级别截割部配置双螺旋滚筒，具备超强截割能力，专为f8硬度煤岩设计，在高硬度条件下稳定运行。

The project achieved remarkable results:

项目取得卓越成效：

Unmanned mining with monthly output over 60,000 tons, zero safety incidents,

实现无人化开采，单月产量超6万吨，安全事故降为0，维护效率提升

44% maintenance efficiency improvement, and 12 months fault-free operation;

44%，12个月无故障运行；

12 consecutive months zero gearbox failure record, high-hardness cutting tooth lifespan

连续12个月零爆箱记录，高硬度截齿寿命是竞品

5x above competitors, client achieved ROI in 6 months;

5倍以上，客户投产后6个月收回投资成本；

Multi-mineral mining capability verified (copper, potash, iron).

多矿种开采能力得到验证（铜矿、钾矿、铁矿）。