Safety brakes have been used at lowspeedshaft of ladle cranes, especially of those with planet gear boxes. Safety brakes protect the main hoist effectively.
Such a relatively lowspeed rotation of the motor shaft 26 and fan 28 permits the air purifier 10 to operate at a relatively low noise level.
马达轴26和风扇28的这种相对较低速度的旋转使得空气清洁器10在相对较低的噪声等级下运转。
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The Horizontal Type Invert Umbrella Surface Aerator is a vertical-shaft and low-speed aerator. It can be used in the biochemical treatment of municipal sewage and industrial wastewater.