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PH1 Muncie Gear Pump

The Muncie PH1 (part of the PH Series) is a high-performance, fixed-displacement bushing-style gear pump designed for compact hydraulic systems that require maximum durability. Featuring a rugged three-piece cast iron construction, it is specifically engineered to handle high-pressure duty cycles while maintaining a small footprint, making it an ideal choice for direct mounting to truck PTOs.

Model:
PH1
Brand:
Green Hydraulic
Model Number:
PH1
Packaging Details:
Standard export carton/plywood case
Testing Before Shipment:
Yes
Cartification:
ISO9001，CE
Markets:
• Industrial • Energy • Government (Non Aerospace) • HVAC • Mobile • Natural Resources • Transportation (Non Aerospace)
Application:
1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry
Shaft Type:
Key Shaft and Spline shaft
MOQ:
1 set


Availability:



Inquiry

Product Description

Product Description

PH1 SERIES Gear Pump Overview

The Muncie PH1 is a high-performance, fixed-displacement bushing-style gear pump engineered for compact hydraulic systems that demand maximum durability and reliable high-pressure output. Featuring a rugged three-piece cast iron construction, the PH1 is specifically designed to provide a high power-to-weight ratio, making it an ideal choice for direct mounting to truck Power Take-Offs (PTOs) in mobile equipment where space is at a premium and performance is non-negotiable.

Features and Benefits

Rugged Three-Piece Cast Iron Construction:
The PH1 is built with high-tensile, heavy-duty cast iron bodies and covers, providing superior structural rigidity compared to aluminum alternatives. This robust construction minimizes internal deflection and mechanical fatigue under high-pressure duty cycles, ensuring stable performance and extended service life in grueling work environments.
High-Performance Bushing Design:
Utilizing advanced, pressure-balanced bushings instead of roller bearings, the PH1 offers an increased bearing surface area that excels in high-pressure operations. This design is inherently more tolerant of fluid contamination and thermal shock, maintaining high volumetric efficiency while protecting the pump from premature wear during intensive use.
Advanced Pressure-Balanced Wear Plates:
Equipped with sophisticated axial compensation technology, the PH1 features pressure-balanced wear plates that automatically optimize internal clearances between the gear faces and the housing. This minimizes internal fluid bypass and friction, ensuring exceptional mechanical efficiency and consistent power delivery across all operating temperatures.
Superior High-Pressure Capability:
Despite its compact footprint, the PH1 is engineered to handle continuous operating pressures of up to 3,500 psi (241 bar). Its high-strength alloy steel gears and precision-machined components allow it to power high-force actuators and complex hydraulic circuits with smooth, reliable flow.
Modular Versatility and Installation Flexibility:
The PH1 series offers a versatile range of displacements (from 10.2 to 40.6 cc/rev) and supports standard SAE "A" and "B" mounting options. With a unique dual-porting design that features both side and rear ports, it provides unmatched installation flexibility for cramped chassis environments and specialized mobile applications.

Model Codes

Technical Data

Model Size	Displacement (in⊃3;/rev)	Displacement (cc/rev)	Max. Pressure (psi)	Max. Pressure (bar)	Max. Speed (rpm)
PH1-03	0.62	10.2	3500	241	4000
PH1-05	1.24	20.3	3500	241	4000
PH1-07	1.55	25.4	3500	241	3600
PH1-08	1.86	30.5	3250	224	3600
PH1-09	2.17	35.6	2900	200	3000
PH1-11	2.48	40.6	2500	172	3000

PH1 Hydraulic Variable Vane Pump Installation Dimensions

Applications

The Muncie PH1 series provides a rugged, high-pressure power solution specifically tailored for mobile and truck-mounted applications where space is at a premium and exceptional mechanical strength is required:

Utility & Service Vehicles: A primary choice for truck-mounted cranes, bucket trucks, and aerial lifts, where the compact PH1 frame integrates easily with Power Take-Off (PTO) units to provide reliable lifting and positioning power.
Snow & Ice Control: Optimized for salt spreaders and small plow systems, where the cast iron construction and bushing design ensure long-term durability against the corrosive environments and high-frequency cycles of winter maintenance.
Commercial Refuse & Recycling: Widely used in small-frame garbage collectors and organic waste bin lifters that require high-cycle, high-pressure stability to manage rapid compaction and unloading operations.
Small Material Handling: Ideal for truck tail-lifts, hydraulic ramp systems, and electric pallet jacks, offering a durable and space-efficient power source that maintains high efficiency under heavy load conditions.
Specialized Agricultural Equipment: Frequently employed in seeders, fertilizer spreaders, and implement steering systems, where the PH1 handles variable load shocks and fluid contamination common in outdoor field environments.

Packaging & Delivery

PH1 pumps are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the pump from environmental damage.

Custom Crates: For larger, heavier pumps, ensuring safe handling.

Documentation: Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.

PH1 Gear Pump FAQ

1. What are PH1 series gear pumps

The PH1 is a high-performance, fixed-displacement bushing-style gear pump and a core component of Muncie’s PH Series. Featuring a rugged three-piece cast iron construction, it is specifically engineered for compact hydraulic systems that require high structural integrity and reliable power output, particularly when direct-mounted to truck Power Take-Offs (PTOs).

2. What makes the PH1 different from standard aluminum gear pumps

The PH1 is built for durability in demanding mobile environments where aluminum pumps may fail:

Rugged Cast Iron Housing: Unlike aluminum pumps that can suffer from "body stretching" at high pressures, the PH1’s cast iron frame ensures tight internal clearances and a longer service life under high-pressure duty cycles.
Bushing-Style Performance: It utilizes advanced, pressure-balanced bushings that provide a superior bearing surface for the gears, offering greater resistance to thermal shock and fluid contamination than typical aluminum-body pumps.
Dual Porting Versatility: Standard with both side and rear ports, the PH1 offers significantly more installation flexibility in cramped chassis environments than standard fixed-port aluminum designs.

3. What is the working pressure range of PH1 pumps

The PH1 is a compact high-pressure specialist. Depending on the specific displacement, the series typically handles:

Continuous Pressure: Up to 3,500 PSI (241 bar).
Intermittent/Peak Pressure: Up to 3,750 PSI (258 bar).
This robust pressure rating makes the PH1 ideal for driving high-force lifting and compaction systems on professional-grade utility vehicles.

4. Can PH1 pumps replace other brands

Yes, the PH1 is a high-quality alternative to other premium compact cast iron pumps. It is often used as a replacement or upgrade for:

Parker/Commercial Intertec: P315 Series.
Metaris: MH315 Series.
Permco: P1900 Series.
To ensure a successful swap, verify the Mounting Flange (SAE A or B), Shaft Type (9, 11, or 13-tooth spline), and Displacement (Gear Width) to match your existing system.

5. What hydraulic oil is suitable for PH1 gear pumps

To protect the high-precision bushings and hardened steel gears, the following is recommended:

Oil Type: Premium mineral-based hydraulic fluids with strong Anti-Wear (AW) additive packages.
Viscosity: Standard ISO VG32 to VG68. The optimal operating range is 100 to 150 SUS (20 to 30 cSt), though it can handle cold starts up to 2,000 SUS (430 cSt).
Filtration: Cleanliness is vital for bushing lubrication. A minimum filtration of ISO 4406 18/16/13 is recommended to prevent abrasive particles from damaging the bushing faces.

6. What is the typical speed range of PH1 pumps

The PH1 is designed for versatile speed requirements, typically operating between 600 RPM and 4,000 RPM (depending on displacement). Its ability to maintain high volumetric efficiency at high rotational speeds makes it excellent for both engine-idle PTO applications and high-speed electric motor drives.

7. Do you provide OEM or customized services

Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.

8. How can I get a quotation quickly

Please provide the following details:

Model or displacement
Working pressure
Speed
Quantity
We will reply within 12 hours with a competitive quotation.

Certifications & Quality Assurance

PH1 pumps are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.

FAQ

1.How does the variable displacement work?

The pump's flow is adjusted by changing the angle of an internal swash plate. As the swash plate angle changes, the stroke length of the pistons varies, which in turn changes the volume of fluid displaced per rotation, allowing the flow rate to adapt to the system's needs.

2.What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.

3.What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.

4.Can you make my own brand on the products?

Of course we can. Just send me your logo we can make it for you.

5.What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).

Unedited footage of the Green Hydraulic Factory

The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.

The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.

Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.

Unedited footage of the Green Hydraulic Factory3

All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.

Unedited footage of the Green Hydraulic Factory4

To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.

Unedited footage of the Green Hydraulic Factory5

Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.