PGP315B193PQAB05-66MXAB05-1 Parker Hydraulic Gear Pump 40.6 cc/rev

Product Overview

The PGP315B193PQAB05-66MXAB05-1 is a high-performance fixed displacement external gear pump from Parker Hannifin’s PGP300 Series — specifically the PGP315 cast iron pump family. As the smallest housing size in the PGP300 lineup, the PGP315 series offers displacements from 7.6 to 40.6 cc/rev, making it ideal for low-flow, high-pressure applications.

Built with a three-piece cast iron construction and featuring low-friction journal bearings with balanced thrust plates, this pump delivers exceptional durability, high efficiency, and extended service life even in severe operating environments. The PGP315B193PQAB05-66MXAB05-1 represents the maximum displacement variant (40.6 cc/rev) within the PGP315 series, providing maximum flow capacity in a compact package — particularly suited for truck-mounted and mobile hydraulic systems where space is at a premium.

The series supports single, tandem, and multiple pump configurations, with the ability to stack up to 6 pump sections. As an original Parker product, this pump offers direct interchangeability with equivalent PGP315 series models, with fully compatible mounting dimensions and port interfaces — requiring no system modifications for replacement.

Model Code Breakdown (PGP315B193PQAB05-66MXAB05-1) :

Per Parker PGP300 Series ordering code structure:

• PGP — Parker Gear Pump (fixed displacement)

• 315 — Pump frame size (smallest housing, 7.6–40.6 cc/rev)

• B — Series derivative code

• 193 — Displacement code (40.6 cc/rev, maximum displacement option)

• PQA — Port type and configuration code (SAE flange / straight threaded)

• B05 — Mounting flange and shaft specification code (SAE standard)

• 66MXAB05-1 — Multiple pump configuration code (tandem sections and coupling specification)

Technical Specifications (Bulleted List)

PGP315 Series General Parameters (Parker Official Data):

• Brand: Parker Hannifin — Commercial Hydraulics

• Series: PGP300 Series — PGP315

• Pump Type: Three-piece cast iron, external gear, fixed displacement pump

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

• This Model Displacement: 40.6 cm³/rev (maximum displacement option)

• Rated Continuous Pressure: 241 bar (3,500 psi)

• Peak Intermittent Pressure: 275 bar (4,000 psi), ≤10% duty cycle

• Maximum Operating Speed: 3,000 RPM

• Minimum Operating Speed: 400 RPM

• Maximum Flow Rate: 32 GPM (121 L/min)

• Volumetric Efficiency: ≥94% under standard conditions, up to 98% optimal

• Body Material: Three-piece cast iron

• Bearing Type: Low-friction journal bearings + balanced thrust plates

• Seal Material: Standard NBR (-20°C to +80°C); FKM high-temp option available (up to 100°C)

• Compatible Fluids: Mineral hydraulic oil, phosphate ester, water-glycol

• Viscosity Range: 50 – 7,500 SUS (kinematic viscosity 10 – 1,300 mm²/s)

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

• Configuration: Single / Tandem / Multiple (up to 6 sections)

• Control Options: Relief valve, load sense, priority valve, unloader (integrated options)

• Rotation Direction: Clockwise / Counter-clockwise / Bi-rotational (configurable)

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

• Port Connections: SAE flange / ISO / NPT / BSPP / ODT

• Port Location: Side ports / Rear ports

• Shaft Type: SAE / ISO / DIN / Industry Specific

• Weight: Single pump 12.5 – 15.2 kg; max 22 lb (approx. 10 kg)

Key Technical Advantages

1. Three-Piece Cast Iron Construction — The Foundation of High-Pressure Durability

The three-piece cast iron housing delivers superior fatigue strength and impact resistance compared to aluminum alloy alternatives. Cast iron’s thermal expansion coefficient closely matches that of the gear materials, maintaining stable clearances at elevated temperatures (up to 80°C) and ensuring continuous pressure capability of 241 bar.

2. Balanced Thrust Plates — The Key to High Efficiency & Low Leakage

Balanced thrust plates automatically compensate for axial clearance through hydraulic balancing principles, effectively minimizing internal leakage. This design achieves volumetric efficiency of ≥94% under standard conditions and up to 98% under optimal conditions — significantly outperforming competitive products.

3. Journal Bearings with Internal Lubrication Channels — Long Life & Low Friction

Journal bearings with continuous internal oil supply ensure exceptional bearing life at high speeds (up to 3,000 RPM) and under heavy loads. The internal channel design guarantees adequate lubrication under all operating conditions, minimizing friction losses and temperature rise.

4. Flexible Multiple Pump Configuration Capability

Support for single, tandem, and multiple configurations — with up to 6 pump sections on a single drive shaft. This modular design enables OEMs to integrate multiple hydraulic functions on a single drive input, reducing hose connections and potential leak points while lowering system assembly costs.

5. Integrated Valve Options — System Simplification

Parker’s integrated function valve program allows direct integration of relief valves, load-sense unloading valves, priority flow dividers, and other control valves into the pump housing. This integration reduces external valve counts, eliminates hoses and fittings (and their associated leak points), and lowers assembly labor costs.

Application Areas

• Truck Hydraulic Systems — Dump truck hoists, refuse packers, bulk material transporters

• Construction Equipment — Loaders, excavator auxiliary pumps, skid-steer loaders

• Agricultural Machinery — Tractor hydraulic lifts, combine harvesters

• Material Handling — Forklift hydraulics, lift platforms

• Municipal & Vocational Equipment — Street sweepers, water trucks, salt/sand spreaders

• Forestry & Mining Equipment — Forestry machinery, small-scale mining equipment

• Industrial Hydraulic Systems — Small industrial power units

• Aerial Work Platforms — Scissor lifts, boom lifts

Expert Maintenance Tips

1. Pre-Installation Preparation

• Back off the main relief valve adjusting screw until spring tension is fully relieved before installing a new or rebuilt pump — this prevents pressure shock damage during start-up

• Verify pump rotation direction matches the drive unit (clockwise / counter-clockwise / bi-rotational — confirm specific configuration)

• Check shaft alignment with the drive shaft; flexible coupling is recommended with concentricity within 0.1 mm

2. Piping & Filtration Requirements

• Install a filter on the inlet line with filtration rating ≥25 μm (β25 ≥ 75)

• System cleanliness should meet NAS 1638 Class 8 or ISO 4406 17/14 standards

• Inlet pipe diameter must not be smaller than the pump inlet port; piping should be as short as possible with minimal bends to avoid cavitation

3. First Start-Up

• Prime the pump by filling the housing with hydraulic oil before start-up

• Jog the motor to confirm correct rotation direction before running at full speed

• Recommended fluid: ISO VG 46 anti-wear hydraulic oil; use ISO VG 32 for low-temperature environments (<0°C)

• Maintain operating oil temperature between -20°C and +80°C

4. Ongoing Maintenance

• Periodically inspect pump housing connections for leaks

• Replace hydraulic oil and filter after the first 500 hours of operation, then every 2,000 hours thereafter

• For PGP315 and PGP330 models, Plug 5 is required in positions A and B — refer to Service Manual HY09-SM300/US for confirmation

• For rotation direction changes or seal replacement, follow Parker PGP300 Series seal replacement instructions