Advanced Fluid Power, Inc. (AFP) products

Crushing Force: 38,000 lbs. Crushing Time: Under 30 seconds (one way stroke).  Crushing Height:  Crushes drum to under 4 1/2”.  Heavy Duty Construction: Made from 7/8” thick rolled steel plate.

Keeping your hydraulic oil clean will extend the life of your system and the system components.  Down time due to a failed pump, valve, or the entire system can be costly and time consuming.  The leading cause of these failures is dirty or contaminated hydraulic oil.

A bladder accumulator is the most commonly used hydro-pneumatic accumulator. The bladder is filled with nitrogen and fitted in a welded or forged steel pressure vessel. The bladder is made of an elastic material, e.g. rubber. The gas pre-charge pressure can be adapted via the gas inlet/outlet valve on top of the bladder accumulator.

Piston accumulators use pistons as separating elements. They can handle much higher gas compression ratios (up to 10:1) and flow rates as high as 215 litres (57 gallons) per second. However, the piston inside the accumulator causes internal friction that negatively affects reaction speed (i.e. has slower response times greater than 25 ms).

A diaphragm accumulator consists of a fluid section and a gas section with the diaphragm acting as a gas-proof screen. The fluid section is connected with the hydraulic circuit, so that the diaphragm accumulator draws in fluid when pressure increases and the gas is compressed. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit. At the base of the diaphragm is a valve poppet, which shuts off the hydraulic outlet when the accumulator is completely empty and thus prevents damage to the diaphragm.

In vane pumps, a number of vanes slide in slots in a rotor which rotates in a housing or ring. The housing may be eccentric with the center of the rotor, or its shape may be oval. In some designs, centrifugal force holds the vanes in contact with the housing, while the vanes are forced in and out of the slots by the eccentricity of the housing. In one vane pump, light springs hold the vanes against the housing; in another pump design, pressurized pins urge the vanes outward.

Gear pumps are simple and economical pumps. These pumps create pressure through the meshing of the gear teeth, which forces fluid around the gears to pressurize the outlet side. For lubrication, the gear pump uses a small amount of oil from the pressurized side of the gears, bleeds this through the hydrodynamic bearings, and vents the same oil either to the low pressure side of the gears, or through a dedicated drain port on the pump housing.

Piston pumps are typically much more complicated and are often available in wither fixed or, commonly, variable displacement configurations and with pressure compensation. These are big words that mean that piston pumps can usually adapt to the system pressure, providing maximum efficiency and flexibility. They are often used in “closed center” systems where the pump displacement varies to meet the needs of the work being done. Piston pumps use a “swashplate” to move the pistons and the angle of the swashplate & bore of the pistons determines the displacement. Pressure compensation regulates outputs in response to variations in the system. Piston pumps are typically the most efficient type of hydraulic pumps.

Severe duty construction with OSHA guard. Serviceable Core. Thermal capacity to 1,400 hp (1,043 Kw). Operating temperature of 300°F at 200 PSI. Electric, hydraulic, or external drive. Optional: built-in bypass valve. Can be customized to fit any applications. Computer generated data sheet available for any application. Field changeable drive from electric to hydraulic. Cools: Fluid power systems, rock crushers, conveyors, shredders, lubrication equipment for paper machinery, gear drives, offshore drilling equipment, etc.

Manual Load & Unload. Removes most oil from elements to oil collection barrel. Standard Unit: Crushes 5 1/2” Diameter to 12” length. Custom Unit: Crushes up to 40” length. More elements per drum reduces costs of disposal by 70%. Exceeds EPA requirements. Elements may be land filled or sold for scrap metal. Uses 60 to 100 PSI air ONLY — NO electrical fire hazard. Produces up to 25 tons (50,000 lbs) of crushing force. Installation: Attach to your drum, add air, and you are ready! Optional: Oil Transfer pump from drum to larger tank.