Axial piston pumps type PVPY-C (-R, -L) variable displacement, with mechanical controls obsolete components - availability on request

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1 Table TA60obs/E Axial piston pumps type PVPY- (-R, -) variable displacement, with mechanical controls obsolete components - availability on request PVPY are variable displacement axial piston pumps for open circuits, available with following mechanical controls: = manual pressure compensator R = remote pressure compensator = oad sensing compensator The construction is based on swash plate design with 9 axial pistons sliding into a rotating drum. This execution ensures fast response times, high reliability and reduced overall dimensions. The pumps are available in different sizes with displacement range respectively from zero to 28, 45 and 7 cc/rev ISO 09/2, 2 holes Mounting flange Keyed or spline shaft SAE inlet/outlet connections with metric bolts 2 body drain connections located at opposite positions to permit the correct drain pipe orientations (see section ) PVPY--4045* Max pressure = 250 bar (working) 50 bar (peak) MODE ODE PVPY * / D / M ** Variable displacement axial piston pump Optional through output shaft: - = without through output shaft XA = SAE A connection X = SAE connection X = SAE connection = manual pressure compensator R = remote pressure compensator = load sensing compensator Size and max displacement: 028 = 28 cm /rev 4045 = 45 cm /rev 507 = 7 cm /rev Direction of rotation (viewed at the shaft end) D = clockwise S = counterclockwise Shaft: = keyed 5 = splined advisable for version with through output shaft Series number ISO 09/2 Metric mounting flange Note: mounting flange SAE 5744 available on request 2 OPERATG HARATERISTIS Pump model PVPY Displacement [cm /rev] External loads position Theorical max flow at 450 rpm [l/min] 40,6 65,2 0 Max working pressure / Peak pressure[bar] 250/00 250/00 250/00 Min/Max inlet pressure [bar abs.] 0,8 / 0 0,8 / 0 0,8 / 0 Max pressure on drain port [bar abs.],5,5,5 Power consumption at 450 rpm and at [kw] 7,2 28,0 45,7 maximum pressure and displacement Max type shaft [Nm] torque type Fax Max permissible load [N] on drive shaft Frad Speed rating [rpm] Fax = axial load Frad = radial load Notes: For speeds over 800 rpm the inlet port must be under oil level with adeguate pipes. TA60obs

2 MA HARATERISTIS OF VARIAE DISPAEMENT AXIA PISTON PUMPS TYPE PVPY Installation position (see also section 4) Ambient temperature Fluid Recommended viscosity Fluid contamination class Fluid temperature Any position. The drain port must be on the top of the pump. Drain line must be separated and unrestricted to the tank and extended below the oil level as far from the inlet as possible. Suggested maximum line lenght is m. from -20 to +70 Hydraulic oil as per D ; for other fluids see section 5 00 mm 2 /sec at 40 (ISO VG 5 00). Maximum start-up viscosity: 000 mm 2 /sec ISO 440 class 2/9/6 NAS 68 class 0 (filters at 25 µm value with ß25 75 recommended) STAATION POSITION VERTIA STAATION A The pump is supplyed whit drain open, and plugged. efore installation fill the pump with hydraulic oil for at least /4 of its volume, keeping it in horizontal position. With exception of pump mounted below the oil level, we recomend to interpose a baffle plate between inlet and drain line. SIDE THE TANK Minimum oil level equal or above the pump mounting surface. A 200mm SIDE THE TANK Minimum oil level below the pump mounting surface. Minimum inlet pressure = 0,8 bar absolute 800mm, = 200mm OUTSIDE THE TANK, above oil level Minimum inlet pressure = 0,8 bar absolute 800mm, = 200mm HORIZONTA STAATION A SIDE THE TANK Minimum oil level equal or above the pump mounting surface. A 200mm SIDE THE TANK Minimum oil level below the pump mounting surface. Minimum inlet pressure = 0,8 bar (absolute) 800mm, = 200mm OUTSIDE THE TANK, above oil level Minimum inlet pressure = 0,8 bar (absolute) 800mm, = 200mm OUTSIDE THE TANK, below oil level = 200mm : inlet line - : drain line - A: minimum distance between inlet and drain line - +: permissible suction height - : inlet line immersion dept 4. Hydraulic fluids and operating viscosity range Recommended mineral oils type HP having high viscosity index. The type of fluid has to be selected in consideration of the effective working temperature range, so that the fluid viscosity remains at the optimal level (see fig. ). To ensure the best efficiency and working life, the fluid viscosity should be selected in the range 5 to 6 mm 2 /s at the effective working temperature. Note: the temperature of the fluid contained in the pump body (drain line) is always higher than the tank temperature, specially if the pump is working for long time in null flow conditions and at high pressure Fluid viscosity limits: - 0 mm 2 /s for short periods at max fluid temperature on drain line mm 2 /s for short period at cold start-up 4.2 Filtration The correct fluid filtration ensures a long service life of the pump and it prevent anomalous wearing which can cause loss of efficiency and increment of noise level. The fluid contamination class must be not higher than ISO 440 class 2/9/6 (NAS 68 class 0), the recommended class for the best pump operation and endurance should be equal or better than ISO 440 class 20/8/5 (NAS 68 class 9). A 50 microns suction filter is suggested on the pumps inlet port to avoid that big contaminants as part of rubber pips, metallic burrs, etc, can be get into the pump.

3 5 DIAGRAMS at 450 rpm (based on mineral oil ISO VG 46 at 50 ) 5. Noise level Ambient noise levels measured in compliance with ISO 442- oleohydraulics -Test procedure to define the ambient noise level- Pumps. = Qmax = Qmin PVPY-*-028 PVPY-*-4045 PVPY-* Performances in static conditions = Volumetric efficiency 2 = Overall efficiency = Flow versus pressure curve 4 = Power consumption with full flow 5 = Power consumption at pressure compensation PVPY-*-028 PVPY-*-4045 PVPY-*-507 Flow [l/min] Efficiency [%] Power consumption [kw] Noise level [d] Noise level [d] Noise level [d] Flow [l/min] Efficiency [%] Power consumption [kw] Flow [l/min] Efficiency [%] Power consumption [kw] 5. Response times T = pressure response 0% 00% T2 = pressure response 00% 0% T = flow response 0% 00% T4 = flow response 00% 0% Pump type T (ms) T2 (ms) T (ms) T4 (ms) PVPY-*-* PVPY-*-* PVPY-*-* Variation of inlet pressure and reduction of displacement for increasing speed rating Speed rating [rpm/rpmmax] Inlet pressure [bar abs.] Displacement rating [cm /cm max] TA60obs

4 6 HYDRAUI ONTRO Manual pressure compensator The pump displacement decreases when the line pressure approaches the setting pressure of the compensator. The pump supplies only the fluid required by the system. Pressure may be steplessly adjusted at the pilot valve. ompensator setting range: bar ompensator standard setting: 280 bar Flow [l/min] Hysteresis and pressure increasing; max 4 bar Pressure [bar] R Remote pressure compensator As, but with remote setting of the compensator by means of a pressure relief valve conneced to the piloting line X. This version can be obtained from version using a blind plug UNI 592 M4x2 in pos.l and a restrictor M4 drilled ø 0,75 mm in pos.. ompensator setting range: bar ompensator standard setting: 280 bar Flow [l/min] Pressure [bar] Hysteresis and pressure increasing; max 4 bar not supplied oad sensing The pump displacement is automatically adjusted to maintain a constant (load indipendent) pressure drop across an external throttle. hanging the throttle regulation, the pump flow is consequently adjusted. oad sensing control always incorporates an hydraulic compensator to limit the maximum pressure. ompensator setting range: bar ompensator standard setting: 280 bar Differential pressure setting range: 0 40 bar Differential pressure standard setting: 4 bar Flow [l/min] Pressure [bar] Hysteresis and pressure increasing; max 4 bar

5 7 DIMENSIONS OF PVPY DIMENSIONS OF PVPY-028 dotted line version H 2 ø00 h8 ø22 M6 H Max pressure compensator Differential pressure compensator Mechanical max displacement limiter Splined shaft (option 5) connection OUT connection teeth 6/2 pitch DIMENSIONS OF PVPY-4045 dotted line version H 2 ø00 h8 ø25 M6 H Max pressure compensator Differential pressure compensator Mechanical max displacement limiter Splined shaft (option 5) connection OUT connection 5 teeth 6/2 pitch TA60obs

6 DIMENSIONS OF PVPY-507 dotted line version H 2 ø25 h8 ø2 M0 H Max pressure compensator Differential pressure compensator Mechanical max displacement limiter Splined shaft (option 5) connection OUT connection 4 teeth 2/24 pitch 8 TERMEDIATE FANGES FOR VERSION WITH TROUGH OUTPUT SHAFT TERMEDIATE FANGE SAE A (option XA) TERMEDIATE FANGE SAE (option X) 45 ø06.4 SAE A SPED 9 TEETH 6/2 PITH 5 Nm MAX 45 ø46 9 SAE SPED TEETH 6/2 PITH 0 Nm MAX M0 OR-225 M2 0 OR-400 TERMEDIATE FANGE SAE (option X) 45 ø8 0.5 SAE SPED 4 TEETH 2/24 PITH 440 Nm MAX M6 OR-400 0/