1. Material: 2205 duplex stainless steel and SS316L;
2. The screw propeller is inlaid with wear-resistant hard alloy plate; the shunt port and slag discharge port are equipped with wear-resistant ceramic protective sleeve to ensure the service life;
3. Bearings SKF of Sweden and NSK of Japan are selected, grease lubrication and thin oil lubrication are available;
4. Planet gear or hydraulic differential mechanism with heavy load and large transmission ratio;
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