P7DS3R1A9A2B00 Parker Denison Gold Cup Piston Pump 118.8cc 350bar

Product Overview

The P7DS3R1A9A2B00 (cross-referenced as 053-06072-0 / 023-88567-0) is a Parker Denison Gold Cup series variable displacement axial piston pump engineered for high-pressure open- or closed-loop circuits. It offers true drop mon interchangeability with original Denison/Parker units, requiring no modifications to mounting or piping. Every unit undergoes 100% simulated-duty testing to guarantee reliable high-pressure performance in demanding rotary drilling applications. Precision manufacturing, high volumetric efficiency, low noise, and extended service life make it a trusted hydraulic power source for mining and drilling equipment.

Technical Specifications 

• Model: P7DS3R1A9A2B00 (Gold Cup P7 series)
• Displacement: Maximum 118.8 cm³/rev (7.25 in³/rev)
• Continuous pressure: 350 bar (5000 psi)
• Peak / intermittent pressure: 420 bar (6000 psi)
• Maximum speed (full displacement): 3000 rpm
• Control type: Modular (rotary servo, pressure compensator, electro-hydraulic or hydraulic stroker options corresponding to code A9A2B00)
• Weight: Approximately 70 kg (reference value without controls; varies slightly by configuration)
• Mounting flange: SAE-C 2-bolt or optional SAE-D 4-bolt
• Shaft options: Keyed or splined (SAE standard)
• Housing material: High-strength cast iron
• Fluid compatibility: Mineral hydraulic oil (standard Buna-N seals)

Key Technical Advantages

1. Precision machining and high volumetric efficiency: Cylinder block, pistons, and valve plate are precision-ground and matched, minimizing internal leakage and maximizing system efficiency.
2. Robust bearing design for long service life: Precision roller bearings support the rotating group, enabling high-speed and high-pressure operation with extended durability.
3. Low noise and fast response: Zero-backlash rotary servo and rapid compensator response (approximately 50 ms for full de-stroke on P6/P7/P8 sizes) keep pressure overshoot within 10% and ensure quiet, stable operation.
4. Drop-in interchangeability and modular controls: Identical mounting dimensions and port locations to original Denison Gold Cup pumps. Supports multiple control combinations including pressure compensation, torque limiting, and electro-hydraulic stroke adjustment for easy field replacement and system optimization.
5. Integrated charge pump and hot-oil shuttle options: Built-in replenishing capability and optional hot-oil purge suit closed-loop drilling circuits, helping control oil temperature and improve overall system reliability.

Application Areas

• Main pump for rotary drilling rigs (Sandvik / Epiroc, Atlas Copco DM series, etc.)
• Blast-hole drill hydraulic systems in mining
• Closed-loop hydrostatic transmissions on heavy construction equipment
• High-pressure power units for cranes, marine, and specialized vehicles

Expert Maintenance Tips

Ensure adequate suction-line diameter with minimal restrictions; maintain inlet absolute pressure within recommended limits to prevent cavitation. Fully bleed the system and verify case drain pressure (continuous recommended ≤ 5 bar) before initial operation. Maintain oil cleanliness at NAS Class 7 or better and replace filters and oil on schedule. Set the pressure compensator slightly below the system relief valve setting. For long-term storage, fill with clean oil and seal all ports to prevent internal corrosion. Use high-quality anti-wear hydraulic oil (ISO VG 46 or VG 68) matched to operating temperature.