Bosch Rexroth | PVQ4-1X98R
PVQ4-1X/98R
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The PVQ4-1X/98R pump belongs to the PV Fixed Displacement Pumps series from Bosch Rexroth and is used to supply constant hydraulic flow in automation circuits. A displacement of 97.7 cm³ defines the volume of fluid moved per revolution, while a maximum continuous pressure of 210 bar indicates the highest working pressure the housing and bearings can withstand without fatigue. When driven at 1,500 rpm the unit delivers up to 141 l/min, providing predictable flow for actuators and valves. The minimum speed of 600 rpm sets the lowest shaft speed that still maintains internal lubrication, and an alternate-fluid speed limit of 1,200 rpm restricts operation when water-containing fluids are used. Clockwise rotation matches common prime-mover arrangements, and a minimum inlet pressure of 0.83 bar absolute helps prevent cavitation at the suction port. Cleanliness to ISO 4406 20/18/15 is required so that sliding and hydrostatic surfaces remain free of abrasive particles.
Standard operation calls for HLP mineral oil according to DIN 51524-2, but alternate fluids are supported within reduced limits of 70 bar for water-in-oil emulsions (HFB) and 140 bar for water-glycol solutions (HFC), safeguarding seals and wear plates from accelerated erosion. A SAE-C mounting flange provides a consistent pilot diameter for direct engine or electric-motor installation, and the overall mounting style follows SAE J744 flange guidelines to simplify interchange with other fixed-displacement models. High-pressure flow exits through a SAE 1 1/4 port sized to keep velocity within recommended limits, while a larger SAE 2 suction port lowers inlet velocity to reduce aeration. The pump weighs 23 kg, a consideration for support brackets and for personnel when positioning the unit during maintenance or replacement.
Technical Specifications
Alt Fluid Max Pressure (hfb)
70 bar
Alt Fluid Max Pressure (hfc)
140 bar
Alt Fluids Max Speed
1200 rpm
Cleanliness Class
ISO 4406 20/18/15
Direction Of Rotation
Clockwise
Displacement
97.7 cm3
Max Continuous Pressure
210 bar
Max Flow (1500 Rpm)
141 l/min
Min Inlet Pressure (abs.)
0.83 bar
Min Speed
600 rpm
Mounting Flange
SAE-C
Mounting Style
Flange Mounting (SAE J744)
Pressure Connection Size
SAE 1 1/4
Pressure Fluid
HLP Mineral Oil (DIN 51524-2)
Suction Connection Size
SAE 2
Weight
23 kg
1620 Old Apex Road
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