The minimum bend radius formula is: L = A/360° x 2πr. The variables in this equation are defined as: L: The minimum length of the hose that needs to bend. A: The angle of the bend.

The radius is produced as a percentage of the die opening, regardless of the die style. If you are working with a material thickness of 0.100 in., multiply that by 0.63 to get a minimum inside bend radius of 0.063 in.

Hose Bend Radius Definition The bend radius is the radius of the bent section of hose measured to the hose center-line of the curved portion. It is important because the minimum bend radius is the maximum amount a hose can be bent without being kinked or damaged (on a single plane).

The same construction hose in 1-in. ID (rated for 1300 psi) has a bend radius of 5.5 inches. If we use a spiral hose example, the same 1/4-in. ID hose (rated for 5100 psi) has a minimum bend radius of 5 inches.

Hydraulic hose failure is most commonly caused by abrasion, poor routing, high temperatures, tube erosion, bent hoses near fittings, fluid incompatibility, and improper assembly. If high pressures are involved, there is also a potential risk of physical injury to employees when hoses burst.

4 to 5 years

Preventive hydraulic hose replacement should occur every year or two, again depending on how the machinery is being used. In spite of knowing the average life of the rubber hose and the average length of time the hydraulic hoses can be used, it is important to continue doing regular inspections to prevent failure.

For dissolved air, you can remove it by raising the temperature of the fluid until the air is released. This should only be done if absolutely necessary as hydraulic oil will normally tend to be at least 10% dissolved air.

Adjust the relief valve by turning the adjuster clockwise until the reading on the gauge builds to the pressure indicated on the machine drawings. This is what is known as the valve “cracking” pressure, which is the pressure at which the relief valve starts to open.

If the temperature’s or pressure in your tank exceeds a certain level (often times 210 degrees and 150 psi), the relief valve opens up and allows some water to drain out of the tank. Cold water is then added to the tank in order to lower the temperature and pressure inside.

When an overflow pipe is dripping or running with water, one of the most common causes is a problem with a float valve. Float valves are found in toilet cisterns, cold water tanks and central heating feed and expansion tanks. When the water in the tank is used, its level goes down and so does the ball and arm.