A hydraulic hose is a flexible tube that is used to transmit fluid power in a hydraulic system. The main components of a hydraulic hose are:

1. Inner tube: This is the innermost layer of the hose, which is in direct contact with the fluid being transmitted. It is made of a synthetic rubber material that is resistant to the effects of the fluid.
2. Reinforcement layer: This is a layer of reinforcement that is added to the inner tube to provide strength and prevent the hose from collapsing when it is pressurized. The reinforcement layer is typically made of braided steel wire or synthetic fibers.
3. Outer cover: This is the outermost layer of the hose, which is exposed to the environment. It is made of a synthetic rubber material that is resistant to abrasion, temperature, and other external factors.
4. End fittings: These are components that are attached to the ends of the hose to connect it to other parts of the hydraulic system. They are typically made of steel or other metal alloys and are secured to the hose using crimping or other methods.
5. Bending radius: This is a measure of the minimum radius that the hose can be bent without kinking or collapsing. It is important to ensure that the hose is not bent beyond its minimum bending radius, as this can cause damage to the hose and reduce its lifespan.
6. Pressure rating: This is a measure of the maximum pressure that the hose is designed to withstand without rupturing. It is important to select a hose with a pressure rating that is appropriate for the application.

Temperature range: This is the range of temperatures over which the hose is designed to operate without degrading. It is important to select a hose with a temperature range that is appropriate for the application.