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SAFE HYDRAULICS
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Catalog excerpts

SAFE HYDRAULICS - 1

Preventive maintenance for safe, reliable and productive machines.

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SAFE HYDRAULICS - 5

WHY PREVENTIVE MAINTENANCE? There are several good reasons to begin a preventive maintenance programme. Costly repairs, production downtime and worker safety to name a few. The main objective of a preventive maintenance programme is to identify component weaknesses before failure and loss of production. Some people believe that PM actually should mean “predictive maintenance” rather than “preventive maintenance.” Preventive maintenance is especially important with hydraulic products. The high pressures and temperatures associated with • Efficient production hydraulics make hose and fitting...

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AVOID FLUID INJECTION INJURIES Prevent fluid injuries - Fluids under pressure, even in small amounts, can cause serious injuries. Pressurised fluid escaping from even a small pin-sized hole can easily puncture the skin. To prevent injuries, never touch a pressurised hydraulic hose assembly with any part of your body. If injury occurs - Pressurised fluid injuries are a serious matter. If fluid happens to puncture the skin, even if no pain is felt, get medical help immediately! Failure to obtain prompt medical help can result in the loss of the injured body part or death. Testing precautions...

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SAFE HYDRAULICS - 7

CHOOSING THE RIGHT COMPONENTS Safe, long-lasting hydraulic assemblies begin by choosing the right components. The “right” components are couplings and hoses designed to work together. Most manufacturers offer safe, high-quality components. But mixing and matching couplings from one manufacturer with hoses from another manufacturer can lead to premature assembly failure. That’s because hoses, couplings, assemby equipment and crimping tolerances vary from one manufacturer to another and are not interchangeable. When components from different manufacturers are mixed, coupling retention can be...

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CHOOSING THE RIGHT HOSE Choosing the right hose is the first step to long and safe assembly service life. Hose construction cover reinforcement tube The reinforcement is the hose’s muscle. It provides the necessary strength to resist internal pressure (or external pressure in the case of suction/vacuum). The three basic types of reinforcement are braided, spiralled or helical. The type of reinforcement is dependent on the intended use of the hose. When choosing a hose, it’s crucial the cover, tube and reinforcement are all compatible with the type of fluid used in the system. Hydraulic...

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SAFE HYDRAULICS - 9

CHOOSING THE RIGHT HOSE The “STAMPED” method Studies conducted by fluid power parts manufacturers indicate that the three most common causes of hydraulic hose failure are abuse, misapplication and improper routing. Equipment operators and technicians can reduce, if not eliminate, premature hydraulic hose failure by giving maximum consideration to hose assembly selection and installation. S Size T Temperature A Application M Material P Pressure Gates suggests using the “STAMPED” method to be sure you get the right hose assembly for the job. “STAMPED” stands for Size, Temperature,...

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SAFE HYDRAULICS - 10

CHOOSING THE RIGHT HOSE Ends or couplings Identify the type of threads the system uses and select a coupling that is compatible with that thread type. Temperature The hose selected must be capable of withstanding the minimum and maximum temperature seen by the system. Delivery Make sure the hose is properly sized to efficiently transport fluid. Application Determine where or how the replacement hose or assembly is to be used. You’ll need to know the equipment type, working and surge pressures, fluid to be used, bend radius, electrical conductivity, etc. Material to be conveyed Product...

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SAFE HYDRAULICS - 11

CHOOSING THE RIGHT COUPLING Coupling selection A hydraulic coupling consists of two functional ends: 1. The hose end for hose attachment. 2. The termination end for port or adaptor attachment. The hose end is identified by the hose size and type to which it is attached. Coupling design is specified by the hose manufacturer to meet hose performance. The termination or thread end of a coupling can be identified by comparing it with the coupling being replaced or by measuring the port or termination end to which it will be attached.

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SAFE HYDRAULICS - 12

CHOOSING THE RIGHT COUPLING Thread size identification guide Ø mm Tapered thread (largest dimension) 30° female seat: NPTF Flat face: BSPT MALE THREAD DIAMETERS Cylindrical thread FLAT FACE O-ring located outside: SAE / Boss O-ring located at nose seat: ORFS MALE SEAT 37° seat: JIC 45° seat: SAE 45° FEMALE SEAT 24° cone / metric tube: DIN 24° universal cone / “Gaz” Tube: French Gaz 60° cone: BSP 1/8"-28 BSP

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SAFE HYDRAULICS - 13

CHOOSING THE RIGHT COUPLING Thread size identification guide Ø mm Tapered thread (largest dimension) 30° female seat: NPTF Flat face: BSPT FEMALE SEAT 24° cone / metric tube: DIN 24° universal cone / “Gaz” Tube: French Gaz 60° cone: BSP M26 x 1.5 MALE SEAT 37° seat: JIC 45° seat: SAE 45° MALE THREAD DIAMETERS Cylindrical thread FLAT FACE O-ring located outside: SAE / Boss O-ring located at nose seat: ORFS Male: refers to the external thread or part which enters into the female to provide connection (source: BFPA/P47-1999) All dimensions are nominal. Actual dimensions may differ slightly due...

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SAFE HYDRAULICS - 14

CHOOSING THE RIGHT COUPLING Thread size identification guide Ø mm FEMALE THREAD DIAMETERS MALE SEAT FLAT FACE FEMALE SEAT 60° cone BSP 24° cone + O-ring / metric tube: DIN 24° universal cone / “Gaz” tube: French Gaz 60° universal cone / metric tube: DIN O-ring located at nose seat male: ORFS sealed through copper washer / bonded seal: BSP 37° seat: JIC 45° seat: SAE 45° 30° seat: JIS

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SAFE HYDRAULICS - 15

CHOOSING THE RIGHT COUPLING Thread size identification guide Ø mm FEMALE THREAD DIAMETERS MALE SEAT FLAT FACE FEMALE SEAT 60° cone BSP 24° cone + O-ring / metric tube: DIN 24° universal cone / “Gaz” tube: French Gaz 60° universal cone / metric tube: DIN O-ring located at nose seat male: ORFS sealed through copper washer / bonded seal: BSP 37° seat: JIC 45° seat: SAE 45° 30° seat: JIS Female: refers to the internal thread or recess, may be of a fixed part or a swivel nut to hold mating parts together (source: BFPA/P47-1999) All dimensions are nominal. Actual dimensions may differ slightly...

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