1. control valve: In some applications, the control valve needs to be installed correctly to ensure its normal operation. For example, some control valves need to be installed vertically, while others need to be installed backwards.
2. Gear pump: The correct installation of gear pump is very important for its performance and reliability. During the installation process, it is necessary to check the front and back of the gear pump to ensure its correct engagement.
3. Rotating shaft: Rotating shaft is a key component in many mechanical systems. During the installation process, it is necessary to check the front and back of the rotating shaft to ensure its correct cooperation with other components.
4. Screw conveyor: Screw conveyor is a kind of equipment used for conveying materials. During installation, it is necessary to check the front and back of the screw conveyor to ensure its normal operation.
Checking the front and rear installation refers to checking the front and rear installation of bearings. Positive and negative assembly of bearings means that the model, size and matching conditions of inner and outer rings of bearings are exactly the same, but the directions of inner and outer rings are opposite.