Large hydraulic excavator

SY705H is a 70T-level new product developed by Sany for large-scale mining conditions, which adopts the high-end configuration of star power combination (Isuzu engine + Kawasaki main pump) + large bucket, and has the product advantages of "high efficiency and low consumption, high reliability and high comfort".

1. Power increase technology

Precise control of power increase under hard buckle working conditions, continuous and powerful excavation, and smooth hard excavation;

2. Coordination improvement technology

The use of fully electronically controlled main valve, customized super large digging control program, action coordination, good customer reputation, the use of boom/stick merging technology, improve the operation speed, high efficiency;

3. Working device lifting technology

The cross-section of the boom stick box is increased by ↑6%, the life of the structural parts is improved, the stick cylinder is thickened by ↑5%, the excavation is smoother, the working condition adaptability is stronger, the bucket angle and the four-link optimization technology improve the excavation efficiency, the large bucket capacity (4.5m³-5.0m³), the efficiency is ↑10%;

4. The comfort of the C12 cab is improved

Leakage (128.3m3/h→114.6m3/h), ↓10%;

Thermal equilibrium temperature (28°C→22.5°C), ↓20%;

Noise (74dBA→71dBA), ↓3dBA;

Air suspension seats are standard.