Ex200-2 Duplex Hydraulic Pilot Pump
Ex200-2 Duplex Hydraulic Pilot Pump for Ex200-2 Hydraulic Gear Charge Oil Pump
Products Description
EX200-2 Duplex Gear Pump Product Details Page
Unrivaled Performance, Precision Engineering
I. Core Technical Specifications
| Parameter | Value | Standards |
| Model | EX200-2 | In-house R&D Code: HYD-EX200-2 |
| Rated Displacement | 200cc/rev (±1% tolerance) | ISO 4409 Displacement Test |
| Rated Pressure | 25MPa (continuous) / 31.5MPa (peak) | SAE J1401 Pressure Class Certified |
| Speed Range | 1000-3000rpm (Optimal Efficiency: 2200rpm) | GB/T 13857-2013 Standard |
| Volumetric Efficiency | ≥94% (tested at 20MPa) | ISO 4402 Efficiency Report |
| Mechanical Efficiency | ≥92% (with optimized bearing friction design) | Factory Test Average |
| Noise Level | ≤78dB (1m distance, no-load operation) | GB/T 25613-2010 Noise Standard |
| Medium Temperature | -20ºC~+80ºC (standard hydraulic oil) | Material Temperature Test Report |
| Port Size | Suction: G2" / Discharge: G1.5" (ISO 6149-1 compliant) | Universal Pipe Fitting Compatibility |
Technological Advantages
1. Energy-Efficient Design
Data-Driven Results:
Reduces energy consumption by 18% compared to single gear pumps (tested at 20MPa, 2000rpm, ISO VG46 oil).
Innovation Highlights:
▸ Symmetrical dual-gear meshing minimizes radial force imbalance to 0.3kgf (vs. 1.2kgf in traditional pumps).
▸ Precision-machined side plates with 0.02-0.03mm clearance limit leakage to ≤0.5L/min (industry avg. 1.2L/min).
2. Extended Durability
Proven Longevity:
▸ Achieves 10,000 hours of continuous operation without failure (bench test: 25MPa, 3000rpm).
▸ Gears made of 20CrMnTi carburized steel, with surface hardness HRC58-62 and wear rate ≤0.01mm/1000 hours.
Customer Case:
An excavator manufacturer reduced maintenance cycles from 6 to 18 months and cut costs by 40% after adopting EX200-2.
3. Low-Noise Operation
Application Scenarios & Compatibility
| Industry | Equipment | Operating Conditions | Customer Benefits |
| Construction Machinery | Excavators, Loaders | 20-25MPa pressure, 1800-2200rpm speed | 12% increase in work efficiency, 8% fuel savings |
| Industrial Hydraulics | Forging Machines, Injection Molds | 60-80ºC continuous temperature, 32-68cSt viscosity | 70% reduction in failure rate, 35% cost savings |
| Agricultural Machinery | Combine Harvesters, Tractors | -10-+40ºC ambient, IP54 dust protection | Enhanced contamination resistance, 500-hour oil change interval |
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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