8X F2838 350KV 3-4S Underwater Brushless DC Motor 2.4KG Thrust 150W IP28 Waterproof for RC Boat Thruster ROV

stainless steel shaft: shaft body material SUS316, solid solution aging heat treatment process, shaft body hardness 58-60. process: aluminum alloy shell, process, fast heat dissipation and light weight. Leading technology, suitable for underwater immersion, outdoor rain, power selection of water and underwater equipment.N45H high-performance magnet, high-quality high-temperature copper wire, stainless steel bearings, anti- and anti-rust treatment process, Waterproof welding: PCB board solder joint glue curing process, lead glue encapsulation process, first-level waterproof and other tests. stainless steel bearings: Japan's high-end stainless steel bearings, anti-, anti-rust. First-class waterproof, high efficiency and energy saving.vacuum filling: from Japan with high temperature resistance, strong adhesion, oxidation resistance, solidified waterproof glue pouring.