F11-005 MB-CV-K 000 000 0
4 month ago
Product details
Parker Hydraulic Piston Pump Motor F11-005-MB-CV-K-000 for Exavator Parts
All complete Parker pump replacement as the following are the same as the OEM specification.
Features:
Compact.
Low noise level.
Sealed shaft bearing.
Service friendly.
Reliable.
Long-lasting.
Flexible.
Easy to install.
High self-priming speed.
1. Product Overview
• Model Definition
• F11-005 MB-CV-K
• F11: Pump series code (derived from Bosch Rexroth A11VO series, designed for closed-loop hydraulic systems).
• 005: Displacement indicator (theoretical displacement: 5 cm³/rev; actual values may vary by ±5%).
• MB: Mounting type (flange-mounted, Motor Base Flange).
• CV: Control method (pressure-compensated variable displacement).
• K: Port configuration (SAE standard interface, Type K: dual-threaded ports).
• Core Function
Used in closed-loop hydraulic systems (e.g., construction machinery, cranes, die-casting machines), featuring a swashplate axial piston design for variable output. Integrates pressure compensation to optimize energy efficiency, suitable for high-pressure, high-flow applications.
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2. Technical Specifications
【表格】
Parameter Typical Values (Subject to manufacturer confirmation)
Displacement 5 cm³/rev (theoretical; ±5% tolerance)
Rated Pressure 280 bar (continuous) / 350 bar (peak)
Speed Range 600–2000 rpm (max. speed dependent on oil viscosity)
Control Type Pressure-compensated variable displacement
Swashplate Angle ±18° (adjustable range; affects displacement linearity)
Weight ~12 kg (with oil; varies by configuration)
Media Compatibility Mineral-based hydraulic oil, HFA/HFB water-based fluids (confirm seal material)
Filtration Requirement ISO 4406, particle size ≤ NAS 1638 Class 9 (recommended ≤25 μm)
Port Size SAE O-ring ports (#12 or #16, selected by flow rate)
Protection Class IP65 (dust/water-resistant; additional motor protection required)
Operating Temperature -20°C to +60°C (short-term up to +80°C)
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3. Working Principle
1. Variable Control Logic
• A pressure compensator valve senses system pressure and automatically adjusts the swashplate angle to maintain set pressure.
• Example: When load pressure rises to the compensator’s setpoint (e.g., 250 bar), pump displacement reduces to limit power output and prevent overload.
2. Closed-Loop Characteristics
• Integrated flush valve periodically discharges hot oil from the loop to prevent overheating.
• Charge pump provides low-pressure oil to compensate for internal leakage and maintain control pressure.
3. Typical Control Curve
• Pressure-flow curve exhibits a "plateau + slope" characteristic:
• Low-pressure range (0–200 bar): Full displacement (5 cm³/rev).
• High-pressure range (200–280 bar): Displacement decreases linearly to zero as pressure rises.
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4. Typical Applications
• Construction Machinery
• Hydraulic cylinder control for excavator booms/buckets (closed-loop drive).
• Crane luffing mechanisms (precise pressure compensation to prevent overloading).
• Industrial Equipment
• Die-casting machine clamping systems (high-pressure rapid response).
• Injection molding machine hydraulic drives (energy-saving variable control).
• Marine & Offshore Engineering
• Hydraulic power sources for deck machinery (anchors, winches).
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5. Selection Guidelines
• Displacement Matching
Calculate required system flow:
Q=V×n60×ηvQ = \frac{V \times n}{60 \times \eta_v}Q=60×ηvV×n
(VVV: Displacement cm³/rev,nnn: Speed rpm,ηv\eta_vηv: Volumetric efficiency ≈ 0.95).
• Pressure Compatibility
Ensure maximum system pressure ≤ pump rated pressure (280 bar) with a 20% safety margin.
• Control Method Selection
• CV Type (Pressure-Compensated): Suitable for load-sensing systems (e.g., cranes).
• DR Type (Constant Power): Ideal for power-limited applications (e.g., injection molding).
• Media Compatibility
• Water-based fluids require special seals (e.g., FKM/FFKM).
• For low-temperature environments (<-20°C), preheat oil to viscosity ≤ 1000 cSt.
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6. Troubleshooting
【表格】
Symptom Possible Cause Solution
Insufficient Flow Stuck swashplate, low charge pressure Clean swashplate, verify charge pump pressure (≥15 bar).
Pressure Fluctuations Fatigued compensator spring, contaminated oil Replace spring, change filter (≤10 μm).
Abnormal Noise Bearing failure, cavitation Replace bearings, check suction vacuum (≤0.3 bar).
Leakage Aged shaft seal, damaged O-ring Replace shaft seal (e.g., TC-type radial seal), O-ring.
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