MAO1500/2000/2500/3000/3500/4000/4500/5000/6000 ◆ Shaft ends multi seal protection and air purge seal protection to efficiently prevent leakage. ◆ Unique mixer monitoring system to montior working conditions of gearbox,discharge door pump,and electronic lubrication pump. ◆ Equipped with 24DC HDI grease pump special for concrete mixer;Self-progrmmed operation time,Waterproof,Dustproof,Superb performance. ◆ Multi-pipe water sparying to ensure even water disribution. ◆ Heavy duty design,stable operation. ◆ Optional filtering and cooling system to keep lubrication oil clean in a constant Temperature and extend gearbox service life. ◆ Optional 4thGeneration gearbox processed by higt-precision technology with military materials.High performance and longer service life. ◆ Optional mixer stable protection system and microwave moisture monitoring sytem. ◆ Capacity ranged from 1.5cu.m to 6.0cu.m.