PGP315A193PQAB07-66 Parker Gear Pump 19.3cc 3500psi

Product Overview

The PGP315A193PQAB07-66 belongs to the Parker PGP300 Series of cast iron, fixed-displacement external gear pumps. The model code breaks down as follows: PGP315 denotes the 315 series housing, A193 indicates the displacement specification (19.3 cm³/rev), and PQAB07-66 specifies the mounting configuration, shaft type, porting, and rotation direction.

The PGP300 Series delivers exceptional performance and reliability under heavy-duty hydraulic applications. As a direct OEM alternative to Parker PGP Series pumps, this product is manufactured to strict Parker original specifications, featuring 100% form-fit-function interchangeability – mounting dimensions, port configurations, and shaft styles are fully identical to original Parker PGP300 series pumps, requiring zero modifications for direct replacement. Every pump undergoes 100% simulated duty-cycle testing prior to shipment, with performance validation conducted at rated pressure, flow, and actual load conditions.

The PGP300 Series encompasses four housing sizes – PGP315, PGP330, PGP350, and PGP365 – covering the complete displacement spectrum from small to large flow requirements. The PGM Series gear motors share the same platform design, offering corresponding displacement options for hydraulic motor applications.

Technical Specifications

PGP315A193PQAB07-66 (Specific Model)

• Model Number: PGP315A193PQAB07-66

• Series: PGP315

• Geometric Displacement: 19.3 cm³/rev (1.18 in³/rev)

• Rated Pressure (Continuous): 241 bar (3500 psi)

• Peak Pressure (Intermittent): 275 bar (4000 psi)

• Maximum Speed: 3000 RPM

• Minimum Speed: 400 RPM

• Construction: 3-piece cast iron housing, external gear, sliding bushings

• Rotation: Bi-rotational (field-configurable)

• Mounting: SAE standard flange

• Shaft Configuration: Per code (07-66 configuration)

• Port Connections: SAE / ISO / NPT / BSPP options

• Port Locations: Side or rear ports

• Operating Temperature Range: -20°C to +80°C (standard seals)

• Fluid Compatibility: Mineral oils, water-glycol, phosphate-esters

• Viscosity Range: 50 – 7500 SUS

• Weight: Approx. 10 kg (max)

PGP315 Series (Full Displacement Range)

• Displacement Range: 7.6 – 40.6 cm³/rev (0.46 – 2.48 in³/rev)

• Standard Displacements: 7.6 / 10.2 / 11.4 / 15.2 / 19.0 / 20.3 / 22.8 / 25.4 / 26.6 / 30.4 / 30.5 / 35.6 / 40.6 cc/rev

• Rated Pressure: 241 bar (3500 psi) across all displacements

• Peak Pressure: 275 bar (4000 psi)

• Maximum Speed: 3000 RPM

• Weight Range: 12.5 – 15.2 kg (single pump)

PGP330 Series

• Displacement Range: 16.1 – 64.6 cm³/rev (0.985 – 3.94 in³/rev)

• Standard Displacements: 16.1 / 24.2 / 32.3 / 40.4 / 48.4 / 56.5 / 64.6 cc/rev

• Rated Pressure: 241 bar for 16–56.5cc; 207 bar for 64.6cc

• Peak Pressure: 275 bar (4000 psi)

• Maximum Speed: 3000 RPM (all displacements)

• Weight Range: 15.2 – 18.7 kg

PGP350 Series

• Displacement Range: 20.8 – 104.0 cm³/rev (1.275 – 6.375 in³/rev)

• Standard Displacements: 20.8 / 31.2 / 41.6 / 52.0 / 62.4 / 72.8 / 83.6 / 93.6 / 104.0 cc/rev

• Rated Pressure: 241 bar for 20.8–93.6cc; 224 bar for 104cc

• Peak Pressure: 275 bar (4000 psi)

• Maximum Speed: 3000 RPM

• Weight Range: 19 – 26 kg

PGP365 Series

• Displacement Range: 44.3 – 147.5 cm³/rev (2.70 – 9.00 in³/rev)

• Rated Pressure: 241 bar (3500 psi)

• Peak Pressure: 275 bar (4000 psi)

• Maximum Speed: 2400 – 3000 RPM

• Weight Range: Approx. 25 – 35 kg

PGM315 / PGM330 / PGM350 / PGM365 Gear Motors

• Displacement Ranges:

  • PGM315: 7.6 – 40.6 cm³/rev

  • PGM330: 16.1 – 64.6 cm³/rev

  • PGM350: 20.9 – 104.5 cm³/rev

  • PGM365: 44.3 – 147.5 cm³/rev

• Rated Pressure: 241 bar (3500 psi)

• Maximum Speed: 2400 – 3000 RPM

• Rotation: Bi-rotational

• Mounting: SAE 2-bolt or 4-bolt flange

• Shaft Types: SAE involute spline or straight keyed shaft

Key Technical Advantages

1. 3-Piece Cast Iron Construction – The Foundation for Heavy-Duty Reliability

The PGP300 Series features a rugged 3-piece cast iron housing design that delivers exceptional structural rigidity and resistance to deformation. Cast iron provides superior damping characteristics, effectively absorbing hydraulic pulsations and mechanical vibrations to significantly reduce operating noise. The excellent thermal conductivity of cast iron ensures uniform temperature distribution across the pump body under continuous high-load operation, preventing localized overheating that could lead to seal failure and loss of precision. The 3-piece construction also facilitates easy service and component replacement, reducing total lifecycle maintenance costs.

2. Low-Friction Balanced Thrust Plates & Slide Bushings – The Efficiency & Longevity Advantage

The large-area, low-friction slide bushings and balanced thrust plate design create a precision oil film support at the gear end faces. This design delivers three critical engineering benefits: First, the balanced thrust plates automatically compensate for axial clearance, maintaining minimal end-face leakage across the full pressure range to ensure high volumetric efficiency (≥94% under standard conditions, up to 98% at optimum). Second, the low-friction bushings substantially reduce friction losses on the gear shafts, improving mechanical efficiency and power density. Third, continuous oil film lubrication between the bushings and shafts prevents metal-to-metal contact, significantly extending bearing and gear service life.

3. Internal Lubrication Circuit – Maintenance-Free Bearing System

The PGP300 Series incorporates internal oil passages that continuously direct working fluid to all friction interfaces – including bushings, thrust plates, and shaft seals. This ensures that all critical moving components receive adequate lubrication even under severe conditions such as cold starts or low-speed, high-load operation. Unlike designs requiring periodic grease application or external lubrication sources, this self-lubricating system dramatically reduces maintenance frequency and operating costs.

4. Flexible Multi-Section Pump Configurations – Space & Cost Optimization for System Integration

The PGP300 Series supports single, tandem, and multiple pump configurations – up to six sections in series or parallel. Multi-section configurations allow a single power input to drive multiple independent hydraulic circuits, dramatically reducing installation space, lowering system costs, and simplifying plumbing layouts. Through-drive capability enables stacking additional pumps in series – the optimal solution for complex hydraulic system integration.

5. Integrated Functional Valve Options – Simplified Systems, Reduced Leak Points

Parker’s application engineers have developed an integrated functional valve program that incorporates control valves – typically requiring external mounting – directly onto the pump body. Optional integrated valves include: relief valves, load-sensing unloading valves, priority flow dividers, and load-sensing priority valves. This integration reduces the number of purchased components, eliminates or reduces hoses and fittings (and potential leak points), and significantly lowers pump system assembly labor costs.

Application Areas

• Mobile Equipment: Wheel loaders, excavator auxiliary pumps, forklifts, skid-steer loaders, aerial work platforms

• Agricultural Machinery: Tractor hydraulics, combine harvesters, sprayers, seeders

• Material Handling: Forklifts, reach stackers, conveyor systems, lift tables

• Municipal & Sanitation Vehicles: Street sweepers, street washers, refuse compactors

• Mining & Heavy Equipment: Mining auxiliary equipment, drilling rigs, crusher conveyor systems

• Industrial Hydraulics: Injection molding machines, presses, machine tool hydraulics, metallurgical equipment

• Mobile Machinery: Concrete mixer trucks, dump truck hydraulics, agricultural trailers

Expert Maintenance Tips

1. Pre-Installation Cleaning & Inspection

PGP300 Series gear pumps are highly sensitive to fluid cleanliness. Thoroughly clean all piping and fittings prior to installation to ensure no metal chips, sand particles, weld slag, or other contaminants remain. Recommended system filtration level: ISO 4406 18/16/13 or better. Contaminants accelerate wear on bushings and thrust plates, leading to rapid loss of volumetric efficiency.

2. Coupling Alignment & Installation

Gear pumps must not be subjected to radial or axial loads – all external loads must be absorbed by the coupling. Ensure coaxial alignment between the pump shaft and drive shaft does not exceed 0.05mm (SAE standard requirement). When using flexible couplings, always install per manufacturer-specified gaps and offsets. Improper alignment is the leading cause of shaft seal leakage and premature bearing failure.

3. Suction Line Design

The PGP300 Series has a minimum operating speed of 400 RPM, requiring adequate suction line diameter to ensure sufficient oil supply. Suction lines should be as short and straight as possible, avoiding sharp bends and restrictions. Use 100-150μm coarse filters on the suction side – never use high-precision filters on the suction side as they can cause cavitation. Suction vacuum must not exceed allowable limits, otherwise cavitation and noise will occur.

4. First Start-Up & Air Bleeding

After installation, bleed air from the system through the drain port or loosened outlet fitting. Run the pump at low speed under no load in a jogging mode until all air is confirmed to be purged from the system. Gradually apply load to reach rated operating conditions. It is recommended to change hydraulic fluid and filters after the first 50 hours of operation to remove微量 wear debris generated during break-in.

5. Regular Inspection & Maintenance

The gear unit itself is maintenance-free, but regular maintenance of the hydraulic system is a prerequisite for trouble-free pump operation. Recommended periodic checks:

• Hydraulic fluid cleanliness and viscosity (every 500 hours or per equipment manufacturer recommendation)

• Coupling wear and alignment status

• Shaft seal area for leaks

• System pressure and flow for normal operation

• Unusual increases in operating noise (may indicate bushing wear or cavitation)