High Quality Steel Hydraulic Pilot Pump For PC30
High Quality Steel Hydraulic Pilot Pump for PC30 Excavator Parts Construction Machinery
Products Description
PC30 Gear Pump - Engineering Specifications
The PC30 gear pump represents a benchmark in compact hydraulic pump technology, engineered for reliable performance in medium-pressure industrial applications. This single-stage external gear pump delivers consistent fluid transfer with exceptional efficiency, making it ideal for integration into hydraulic power units, machine tools, and mobile equipment. Its robust design ensures extended service life even in demanding operating environments.
Key Design Attributes
Monoblock Cast Construction: High-grade GG25 cast iron housing with tensile strength ≥250 MPa, providing superior pressure resistance and thermal stability
Precision Machined Gears: Case-hardened 16MnCr5 steel gears (surface hardness 60±2 HRC) with helical tooth profile for reduced noise and vibration
Self-compensating Bearings: Duocast bronze alloy bushings with pressure-actuated lubrication, maintaining optimal clearance under varying loads
Enhanced Sealing System: Multi-lip PTFE shaft seals with nitrile backup rings, ensuring zero leakage at maximum operating pressure
Optimized Inlet Geometry: Hydraulically designed port passages minimizing flow turbulence and pressure drop by up to 15% compared to standard designs
Technical Specifications
| Parameter | Performance Data | Compliance Standard |
| Model Designation | PC30 | - |
| Pump Type | Single External Gear Pump | ISO 14369 |
| Nominal Displacement | 30 cm³/rev | ISO 8439 |
| Maximum Operating Pressure | 25 MPa | ISO 4413 |
| Continuous Operating Pressure | 20 MPa | ISO 4413 |
| Peak Pressure (10 sec max) | 28 MPa | ISO 4413 |
| Maximum Speed | 3600 rpm | ISO 3006 |
| Optimal Operating Speed | 1500-2500 rpm | ISO 3006 |
| Volumetric Efficiency | ≥96% @ rated conditions | ISO 4409 |
| Mechanical Efficiency | ≥93% @ rated conditions | ISO 4409 |
| Total Efficiency | ≥90% @ rated conditions | ISO 4409 |
| Fluid Compatibility | Mineral oils, biodegradable hydraulic fluids (HETG, HEES) | ISO 6743-4 |
| Viscosity Range | 16-320 cSt | ISO 3448 |
| Operating Temperature Range | -25°C to +110°C | ISO 6743-4 |
| Inlet Port Size | G1" (BSPP) | ISO 228-1 |
| Outlet Port Size | G3/4" (BSPP) | ISO 228-1 |
| Shaft Diameter | 25 mm | ISO 286-2 |
| Mounting Flange | SAE A (2-bolt) | SAE J514 |
| Weight | 8.2 kg | - |
| Noise Level | ≤70 dB(A) @ 1m, 2000 rpm | ISO 11200 |
Performance Characteristics
At optimal operating speed (2000 rpm) and pressure (20 MPa), the PC30 delivers a nominal flow rate of 58.5 L/min with minimal pressure ripple (<3% P-P). The pump maintains efficiency above 85% across 70-100% of rated pressure range, ensuring energy efficiency in partial load conditions.
Pressure-velocity characteristics demonstrate stable performance with flow variation ≤2% under constant speed conditions, providing precise hydraulic control in automated systems.
Application
Industrial machinery hydraulic power units
Plastic injection molding machines
Mobile equipment auxiliary systems
Material handling equipment
Agricultural machinery hydraulic circuits
Automated production lines
Installation & Maintenance Guidelines
Recommended suction line diameter: ≥25 mm, maximum suction lift 0.8 m at 20°C. For optimal performance, maintain fluid cleanliness to ISO 4406 16/13 standard.
Pre-commissioning: Fill pump housing with hydraulic fluid before initial start. First oil change after 50 hours of operation, subsequent changes every 2000 operating hours or 12 months (whichever comes first).
Preventive maintenance interval: Inspect seals and bushings every 4000 operating hours. Gear end clearance should be maintained between 0.02-0.04 mm; replace gear set when exceeding 0.08 mm.
Quality & Support
Warranty: 1 year
Service: Global network of 70+ authorized service centers offering rapid spare parts delivery and on-site technical support.
Detailed Photos



Company Profile

Ningbo Hyleman Hydraulics Co., Ltd is a scientific and innovative company integrating R & D, production, sales and service of high-quality hydraulic pumps, motors, valves and other hydraulic products.
Hyleman mainly provides Rexroth A4VSO, A10VSO, A4VG, A7VO, A11VO and A2FO series high-pressure piston pumps, Rexroth PGH3, PGH4 and PGH5 series high-pressure gear pumps, A4VM, A6VM, A2FM and A4FM series piston motors; BM3, BM4,BM5, BM6 and other orbit motors. Through the honing and innovation of Hyleman people, Hyleman series products can not only perfectly replace the original products, but also realize the seamless exchange and connection of all the parts. Moreover, it has lower noise, higher volume efficiency and longer service life, so as to completely surpass the quality of the original factory, and withstand the severe test of the market, has been exported to more than 70 countries and regions around the world.
Hyleman series products are widely used in engineering machinery, plastic machinery, metallurgical machinery, environmental sanitation machinery, mining machinery, marine machinery, packaging machinery, port machinery and various hydraulic equipment, which are highly praised by clients.
Hyleman has the world advanced CNC processing equipment, vertical and horizontal machining centers, high-precision double-sided grinding, groove grinding, curve grinding and full-automatic machining centers. With 12 independent testing laboratories, the products have been comprehensively inspected before shipment to ensure that Hyleman series products achieve high precision, high quality and zero defects.
"Optimizing the performance of hydraulic products, improving the quality of hydraulic products and leading the comprehensive upgrading of hydraulic product consumption" is not only the responsibility and mission of Hyleman, but also the Chinese dream of Hyleman. Hyleman are willing to work with people of insight to make unremitting efforts to realize this dream.
Warmly welcome all friends to visit the beautiful port city - Ningbo to discuss cooperation and seek common development with Hyleman!
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our Advantages
Why Choose HYLEMAN?
1. Top Quality
Depend on 15 years experience at hydraulic pumps design, research, development and manufacturing, we have a top quality compared with domestic and overseas manufacturers, all of our products are with 1 year warranty time.
2. Strict Quality Control System
We have the most strict quality control system, all of our products are 100% tested before shipment and each of them has one tracking code in order to make sure they are with good quality to our customers.
3. Advanced machinery equipment
All the machines we have are new CNC machines we imported from Germany and Japan in order to reach more higher demand at the products accuracy.
4. Strong Technical team
Our technical team all have more than 20 years experience at pumps design and engineering, our chief engineer has more than 40 years experience at pumps design. We have one 15 persons research team, responsible for pumps improvement research and new products development.
5. Competitive Price
Because of good management, our price is more competitive than the original products, more reasonable than most of the domestic suppliers.
6. Fast Delivery time
We can ship small orders within one week, for big orders such as within 500 PCS pumps or cartridge kits usually we can make shipment within one month.
7. Warranty Period
All of our products are within 1 year warranty time after the shipment from our factory.
8. Considerate Service
We can provide technical support at any time if our customers meet any issue during the using, we will provide solutions at the soonest time.
9. Long development strategy
We would like to establish a long time strategy cooperation relationship with our customers, to promote HYLEMAN brand together, support and train the potential customer to be our agent at each country and region all over the world.
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