Hydraulic hose assemblies commonly operate in rough and demanding conditions. Thus, a hose is often exposed to flying debris in mobile equipment and the likes of weld spatter and hot metal chips—or even the errant lift truck—in industrial settings. Add to that, hoses subjected to continuous movement and machine vibration can rub against each other and adjacent equipment. That can erode hose covers, expose the reinforcement to dirt and moisture, and lead to quick failure.
Circumference and diameter both refer to specific parts of a circle. The diameter is the distance across the circle at its widest point, passing through the center. The circumference is the perimeter, or distance around the circle. The circumference of a circle is calculated by using the diameter in an equation: C = D x 3.14
The Inside Diameter is the inside measurement from one inside edge to the other inside edge on the interior of a hose, tube, pipe or other object. It is often abbreviated as I.D.
The Outside Diameter is the outside measurement from one outer edge to the other outer edge of a hose, tube, pipe, or other object. It is often abbreviated as O.D.
The ASTM D6770 is referring to the standard test method for abrasion resistance of textile webbing using a hex bar abrasion tester. The resistance is expressed as a percentage of retained break strength.
The U.S. Department of Labor's Mine Safety and Health Administration (MSHA ) works to prevent death, illness, and injury from mining and promote safe and healthful workplaces for U.S. miners. When a product is “MSHA approved”, is has received a formal document issued by MSHA which states that the product has met the applicable requirements.
Cutting your protective sleeve is simple! You can use a sharp high-quality scissors, knife, rotary cutter or a hot knife.
Determine hose OD or hose bundle OD. If needed find the circumference of the hose or bundle of hoses, then calculate diameter. Also assess if the hose or hoses have bends or movement during application as the sleeve will need to be over sized to accommodate. Sizing a sleeve to tight to the hose or bundle of hoses will hinder natural movement of the hose within the sleeve, causing premature hose failure due to possible abrasion. Typically size the sleeve 1 - 2 sizes bigger than your current hose or hose bundle OD.
A dash size refers to an ID of the hydraulic hose or fitting in 1/16” increments. Once ID of hose is determined, one can measure or find OD of hose (may vary depending on rating of hose pressure). Once OD of hose or hose bundle is determined you can size your sleeve 1-2 sizes bigger, also dependent on bends or movement of hose or hoses during application.
A hydraulic fluid injection is perhaps the most dangerous injury that can result from a hydraulic hose failure. One reason is that it can appear insignificant at the beginning so it often gets dismissed as not urgent. Another reason is that injected hydraulic oils are highly toxic - so in addition to a physical cut or stab, they poison you.
The longer the period of time before treatment, the more risk you are taking on. At first, injections may feel like a bee sting or wire prick and the entry area may look like just a pin prick. The size of the entry wound is a poor indicator of the seriousness of the injury. What looks like a simple puncture wound is in fact life threatening. The area around the injury typically turns red and swells within a couple of hours. Throbbing and numbness follow. If left untreated, the injury can lead to amputation and even death.