Berarma 01-PHP-1-20 Vane Pump Replacement | Variable Displacement Hydraulic Pump

Genlu Hydraulic retrofits, structural engineers, and supplies international B2B high-end manufacturing industrial global markets with heavy-duty, variable-displacement fluids, and high-pressure axial units optimized for severe operating lifetimes. The 01-PHP Series High-Pressure Variable Displacement Vane Pump is purpose-built as a precision-machined, high-volumetric-efficiency, and 100% drop-in interchangeable alternative to the European premium machine-tool baseline—the Italy Berarma flagship 01-PHP / 01-PLP and 02-PSP / 02-P radial-sliding-ring variable vane collections. We support streamlined production schedules and strategic distributor availability for definitive model configurations, prominently managing replacement assemblies for 01-PHP-1-20-FHRM, 01PHP120, and 01PHP0516.

Within modern high-speed CNC centers, automated parts manufacturing work-holding cells, and multi-axis hydraulic clamping manifolds, regular fixed-displacement pumps generate extreme thermal loss during prolonged idle clamping intervals. The 01-PHP variable vane pump addresses this waste via an integrated hydrostatic pressure-compensator system that shifts the inner cam ring’s eccentricity relative to system load. It delivers “Flow on Demand,” adjusting the volumetric delivery to near zero upon reaching the preset safety cut-off point, reducing thermodynamic overhead and extending oil life. Genlu’s 01-PHP series variable pumps match Berarma engineering blueprints exactly. We guarantee seamless drop-in retrofitting across European standard 3-bolt rectangular mounting profiles, parallel keyed drive shaft tolerances, standard GAS/BSPP fluid port arrangements, and the exact response curve of the FHRM multi-parameter regulator block. Prior to dispatch authorization, every assembly undergoes 100% Full-Simulation Condition Testing to confirm precise cut-off transition responsiveness and tight pressure holding retention.

Technical Specifications 

• Product Line: 01-PHP Series High-Pressure Variable Displacement Vane Pump (Fully cross-compatible with Berarma 01-PHP/01-PLP series)

• Definitive Order Reference: 01-PHP-1-20-FHRM

• Nominal Frame Size & Geometric Displacement Range: Size 1-20 Platform (Maximum volumetric output rated at 20.0 $cc/rev$. Scalable options include size 05-16 yielding 16.5 $cc/rev$)

• Continuous Rated Operating Pressure: 210 bar (21.0 MPa / 3000 psi) continuous steady-state loading

• Maximum Peak Working Pressure: Rated up to 250 bar (25.0 MPa / 3625 psi) transient threshold matching structural mold locking spikes

• Permissible Driving Rotational Velocity Envelope: From 800 rpm (Minimum speed threshold for self-priming vacuum setup) up to 1800 rpm (Industrial maximum rated limits)

• Control Mechanism Logic Designation: FHRM Configuration (Equipped with a proportional pressure compensator valve block, manual pressure adjusting adjustment screw, F-class large flow seat, and the HRM mechanical maximum displacement stroke limiter thread)

• Shaft Rotational Orientation Alignment: Right-Hand Configuration (Clockwise rotation when looking directly looking onto the input parallel keyed shaft)

• Mounting Flange Profile: Standard European rectangular 3-bolt interface layout

• Fluid Connection Port Specifications: Main intake port configured with 1″ GAS/BSPP internal thread; main discharge pressure outlet configured with 1/2″ GAS/BSPP internal thread; auxiliary top casing drain port configured with 3/8″ GAS thread

Key Technical Advantages:

• Hydrostatic Axial Side Balancing Plates for High Volumetric Efficiency: The internal rotary vane core is bordered by flexible bi-metal side plates engineered for structural hydrostatic clearance compensation. High-pressure control fluid is internally fed to strategic counter-balance cavities behind the plates. This layout seals the critical rotor-to-vane end clearances under a 210 bar load, minimizing cross-chamber fluid slippage and keeping the volumetric efficiency above 92%.

• Linear Radial Sliding Ring Mechanism for Quick Cut-Off Transitions: Unlike standard variable pumps that rely on hinged cam rings, the 01-PHP features a sliding cam ring guided along linear parallel tracks inside the main housing. This configuration optimizes the ring trajectory, reducing response lag when shifting from full displacement to absolute dead-head cut-off. This design cushions the machine against pressure surges.

• Dual-Parameter FHRM Regulator for Custom Flow and Pressure Matching: The integrated controller incorporates a heavy-duty fluid spring cartridge. By adjusting the external HRM stroke limiter bolt, users can mechanically set the maximum volumetric flow between 50% and 100% of the pump’s capacity. Combined with the primary pressure adjustment screw, this dual control optimizes machine feed cycles and eliminates excess flow energy losses.

• CFD-Engineered Internal Geometry for Low Noise Plant Operation: The pump case is cast from high-density ductile iron and optimized with sound-dampening internal cavities. The inlet and outlet port curves are shaped using computational fluid dynamics (CFD) software to reduce turbulence and smooth out sudden pressure drops across the vane transition zones. Under full 210 bar pressure-holding dead-head cycles, the total sound level stays near 63 dB, helping maintain a quiet factory floor.

Application Areas:

• High-Precision CNC Machine Tool Centers: Main hydraulic counterweight loops, automated high-velocity tool changer subplates, and main spindle work-holding clamping fixtures.

• Plastics & Automotive Component Processing Implements: Core-pulling configurations and high-pressure clamping stages on compact automated servo-hydraulic injection systems.

• High-Frequency Assembly Line Automation: Dedicated hydraulic presses for automotive powertrain sub-assembly, stamping presses, and multi-station synchronous work-clamping fixtures.

Expert Maintenance Tips:

• Enforce Unrestrictive Direct Routing for the Case Drain Line: Because the 01-PHP-1-20-FHRM pump utilizes internal pressure control mechanisms, it generates a steady flow of pilot oil into its housing. The upper 3/8″ GAS case drain port must be plumbed with a dedicated line running directly back to the reservoir tank without restriction, keeping case back-pressure below 1 bar. Connecting it to general return lines can disrupt the hydrostatic balancing of the side plates, causing shaft seal failure or sliding track seizure.

• Restrict Prolonged Dead-Head Dwell Times to Prevent Thermal Damage: When the pump reaches its preset pressure cut-off point, its output displacement strokes down near zero. At this stage, the pump relies on its minimal internal leakage flow to carry away heat from the friction between the vanes and the cam ring. Running the pump at 210 bar dead-head condition for over 30 minutes without fluid circulation can cause internal oil temperatures to spike past 80°C, breaking down the lubrication film and causing localized scuffing. Configure PLC parameters for intermittent system unloading.

• Maintain Strict Fluid Cleanliness Standards and Execute Pre-Start Air Bleeding: The tight tolerances (2-5 $\mu m$) within this variable vane core make it highly sensitive to fine abrasive particles. Maintain the system oil cleanliness to a minimum ISO 4406 16/13 or NAS 7 standard, using premium anti-wear hydraulic oil (ISO VG46). Before initial startup or after system overhauls, fill the pump casing completely with clean oil and jog the electric motor 3 to 5 times to bleed trapped air from the lines, preventing dry running and cavitation scuffing.