The inner and outer layers of the high-pressure steel wire braided rubber hose wall are made of oil resistant rubber, with (2-4 layers) of cross braided steel wire or wrapped steel wire in the middle. When assembling, if the crimping amount is too small, that is, the pressure between the joint and the hose is too loose, the hose may come out of the joint under the action of oil pressure in the early stage of use; If the crimping amount is too large, the joint and hose may be compressed too tightly. If it is too tight, it is easy to cause local damage to the inner layer and produce cracks. High pressure oil will enter the steel wire layer directly from the crack, and then spray out along the gap between the steel wires to the end of the sheath, or accumulate somewhere along the steel wire layer, causing the outer layer of rubber to bulge or even break.

High pressure steel wire braided rubber hoses are generally composed of four parts: an outer rubber layer, a steel wire reinforcement layer, a middle rubber layer, and an inner rubber layer. The inner rubber layer is in direct contact with hydraulic oil and is generally made of synthetic rubber. The load-bearing capacity of the hose depends on the reinforcement layer, which is the skeleton of the hose and is usually woven or wrapped with steel wire. Most medium and high-pressure rubber hoses use steel wire weaving as the skeleton, while high-pressure hoses often use steel wire wrapped skeleton. The outer layer of the rubber hose is generally made of wear-resistant and corrosion-resistant rubber to ensure that the reinforcement layer is not subjected to mechanical damage, chemical corrosion, moisture, and rust.

When assembling rubber hoses and fittings, if the clamping speed is too fast, it is easy to cause damage to the inner rubber and breakage of the steel wire layer, resulting in premature damage to the rubber hose during use. When replacing high-pressure steel wire braided rubber hoses, the length of the hose, the number of steel wire layers, the shape and size of the joints should be reasonable, and the bending of the hose should be minimized as much as possible; When tightening the joint nut, do not twist the hose. Bending and twisting can reduce the service life of the hose. Protective measures should be taken for parts that are prone to friction to prevent the hose from bursting due to wear and tear.