Double vane pumps
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Double vane pumps type PFED fixed displacement PFED are fixed displacement double vane pumps ባቤ composed by two cartridges of pumps type PFE (see tab. A005) assembled in a main body having one inlet port ቦ and two outlet ports ቧቨ. PFED-43 are composed by one cartridge of PFE-41 and one cartridge of PFE-31. PFED-54 are composed by one cartridge of PFE-51 and one cartridge of PFE-41. Suitable for hydraulic oils according to DIN 51524...535 or synthetic fluids having similar lubricating characteristics. These pumps can be assembled, as second element, with PFE-4 and PFE-5 to obtain triple pumps, see tab A190. Mounting according to SAE J744. Easy installation as inlet and outlet ports can be assembled in any of four relative positions. Easy maintenance as pumping cartridge can be replaced in a few minutes. Hydraulic symbol body first cartridge: stator, rotor, vanes, balanced plates second cartridge: as above shaft inlet port first outlet port PFED-43 second outlet port Wide variety of displacements: from 29+16 up to 150+85 cm3/rev. Max pressure up to 210 bar. MODEL CODE /* Seals material: omit for NBR (mineral oil & water glycol) PE = FPM Fixed displacement double vane pump Series number Size of cartridges: 43 = composed by: one cartridge of PFE-41 + one cartridge of PFE-31 Ports orientation, see section ‫ݚ‬ Direction of rotation (as viewed at the shaft end): D = clockwise (supplied standard if not otherwise specified) S = counterclockwise 54 = composed by: one cartridge of PFE-51 + one cartridge of PFE-41 Note: PFED are not reversible Drive shaft, see section ‫ ݜ‬and ‫:ݝ‬ Displacement of first element [cm3/rev], see section ‫ݙ‬ cylindrical, keyed 1 = supplied standard if not otherwise specified 2 = according to ISO/DIN 3019 3 = for high torque applications Displacement of second element [cm3/rev], see section ‫ݙ‬ splined 5 = for PFED-43: according to SAE B 13T 16/32 DP (13 teeth) for PFED-54: according to SAE C 14T 12/24 DP (14 teeth) 6 = (only for PFED-43) = according to SAE C 14T 12/24 DP (14 teeth) 7 = (only for PFED-43) = similar to shaft type 6. It is used when PFED-43 is the last element of a multiple pump MAIN CHARACTERISTICS OF DOUBLE VANE PUMPS TYPE PFED Installation position Axial and radial loads are not allowed on the shaft. The coupling should be sized to absorb the peak horsepower developed. Ambient temperature Hydraulic oil as per DIN 51524...535; for other fluids see section ‫ݗ‬ Recommended viscosity max at cold start max at full power during operation min at full power Fluid contamination class Fluid temperature Recommended suction line pressure from -0,5 to 1,5 bar for speed up to 1800 rpm; from 0 to +1,5 bar for speed over 1800 rpm

OPERATING CHARACTERISTICS at 1450 rpm with hydraulic oil having viscosity of 24 mm2/sec and 40°C 7 bar Speed range min/max rpm (2) Max speed is 1800 rpm for /PE versions; 1500 rpm for /WG versions PORT ORIENTATION (pumps viewed from the shaf end) Pumps can be supplied with the oil ports oriented in different configuration in relation to the drive shaft. Port orientation of the first element is designated as follows (as wiewed at the shaft end); T = inlet and outlet ports on the same axis (standard) U = outlet orientated 180° with respect to the inlet V = outlet oriented 90° with respect to...

1 = Torque versus pressure diagram Torque needed to operate the pump [Nm] PFED-43: Second element (cartridge SC-PFED-31**) 3 = Power consumption versus speed diagram at 140 bar. Power consumption is proportional to operating pressure. Flow [l/min] 2 = Flow versus speed diagram with pressure variation from 7 bar to 210 bar. PFED-43: First element (cartridge SC-PFE-41**) PFED-54: Second element (cartridge SC-PFED-41**) 5 = Power consumption versus speed diagram at 140 bar. Power consumption is proportional to operating pressure. Flow [l/min] 4 = Flow versus speed diagram with pressure...

DRIVE SHAFT CYLINDRICAL SHAFT KEYED 1 = supplied as standard if not specified in the model code 2 = according to ISO/DIN 3019 standards 3 = for high torque applications Keyed shaft type 1 (standard) Keyed shaft type 2 Keyed shaft type 3 SPLINED SHAFT 5 = for PFED-43 according to SAE B 16/32 DP, 13 teeth; for PFED-54 according to SAE C 12/24 DP, 14 teeth; 6 = (only for PFED-43) according to SAE C 12/24 DP, 14 teeth; 7 = only for PFED-43 when used as the last element of a multiple pump: similar to shaft type 6. Splined shaft type 5 Splined shaft type 6 Splined shaft type 7 SAE FLANGES: port...