Push-pull cable outer casing, also known as control cable housing, is a protective covering used for push-pull cables in applications that require precise control and smooth operation. Here are some important aspects of push-pull cable outer casing:

1. Material: Push-pull cable outer casings are typically made from durable and flexible materials like reinforced plastic, polymer composites, or metal alloys. These materials provide strength, environmental resistance, and flexibility for smooth cable movement.

2. Diameter: The outer casing's diameter varies depending on the specific application and the size of the inner cable. Common sizes range from 5mm to 8mm, although different diameters may be used for specific applications.

3. Construction: Push-pull cable outer casings are designed with multiple layers to provide strength, protection, and flexibility. The innermost layer may feature a low-friction lining, such as Teflon, to reduce friction and ensure smooth cable movement. The outer layers provide structural support and resistance against moisture, dirt, and abrasion.

4. Compression or Compressionless Design: Push-pull cable outer casings can be either compression-type or compressionless housing, depending on the application's requirements. Compression-type casings compress slightly when the cable is activated, transmitting force to the controlled component. Compressionless casings maintain their shape when compressed, allowing for precise control response.

5. End Fittings: Push-pull cable outer casings are equipped with end fittings or terminations designed to securely attach to the control mechanism and the component being controlled. These fittings ensure proper connection, prevent fraying or unraveling of the casing, and facilitate easy installation and adjustment.

6. Lubrication: Proper lubrication of the inner cable is essential for smooth operation and friction reduction. Applying a suitable cable lubricant or light oil to the inner cable helps ensure optimal performance and prolongs the cable's lifespan.