Final drive assembly of ZAXIS870 series(including  models like ZX870h-3, ZX870LCH-5G, etcs.), the undercarriage assembly is comprehensively reinforced for heavy-duty applications such as mining and quarrying, enhancing durability, stability, and impact resistance.

I. Core reinforcement design of undercarriage assembly

1. Reinforced lower undercarriage

-track like assembly: Bush diameter increased by approximately 10%, and link thickness increased by 65%(compared to the older models), significantly extending service life.

-Master pin structure: Press fit master pins replace traditional lock pins, preventing track separation and improving reliability on rugged mining terrain.

-Swing bearing: Increased number of ball bearings raises load capacity by 12%, enhancing overall machine swing stability.

2. Key componet reinforcement

-Idler frame: Support length extended by 54% with increased thickness to improve rigidity and reduce deformation risk.

-Carrier roller and track roller: Wider contact surfaces, larger diameters, and thickened track roller bracket walls minimize damage from rock impacts.

-Full-track guiding mechanism: Standard configuration prevent rocks from jamming between track links and rollers, reducing wear and overload damage.

II. Specialized design for heavy duty applications

1.Chassis reinforecement

-Upper structure adopts D-shaped skirt plate reinforcement, boosting overall chassis rigidity to withstand high-frequency vibrations and impacts during mining/quarring.

-Protective covers added to travel motor guards shield critical componets from rock collisions.

2.Travel performance parameters

-Operation weight: 46400-86200kg(varies by configuration), ensuring operational stability.

-Travel speed: low gear: 3km/h; high gear: 4.5-5.1km/h; balancing complex terrain mobility and efficiency.

-Ground pressure optimization: Wide track shoe design reduces ground pressure, adapting to soft or uneven mining surfaces.