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JHP3 Series gear pumps
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Description
JHP3 Gear Pump
1. Product Overview
The JHP3 series gear pump is a high-pressure fixed-displacement hydraulic gear pump designed for large-power hydraulic systems. It takes large displacement, strong impact resistance and flexible combination as core advantages, adopting high-strength ductile iron housing and precision-machined gear components. As a key power element for heavy machinery, it features stable output, low noise, strong anti-pollution capacity and a wide operating temperature range (-20~+100 ºC). This series covers nearly 10 models with displacement ranging from 63mL/r to 200mL/r, and can be combined into tandem or triple pumps according to customer needs, perfectly matching the power demand of complex working conditions.
2. Structural Features
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High-Strength Material Configuration: The pump housing is made of QT450~550 ductile iron, and the gear shaft adopts 20CrMnTiH alloy steel (certified by Laigang), ensuring excellent tensile strength and wear resistance. The thickened casting structure effectively resists pressure impact and avoids deformation under high-load operation.
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Built-In Overflow Protection: Tandem models are equipped with an overflow valve at the outlet of the auxiliary pump, which precisely controls the pilot pressure, prevents overload of the pilot system, and improves the safety and stability of the entire hydraulic system. The secondary sealing technology is adopted internally to further reduce oil leakage risks.
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Optimized Noise Reduction Design: Combined with high-strength cast iron material and unique internal sound-absorbing structure, the operating noise is significantly reduced. The precision-machined involute spline connection ensures smooth power transmission, minimizing flow and pressure pulsation even at low speeds.
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Wide Speed Adaptability: The rated speed is 2200r/min, with a maximum speed of up to 2500r/min (some models can reach 3000r/min), adapting to different power source configurations. The fixed bimetal side plates realize automatic clearance compensation, maintaining high volumetric efficiency (≥92%) and total efficiency (≥84%) during long-term operation.
3. Technical Parameters
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Parameter
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Specification
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Displacement Range
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63~200 mL/r (Fixed Displacement; Models: JHP3063 to JHP3200)
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Pressure Rating
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Rated: 20 MPa; Maximum: 25 MPa
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Rotational Speed
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Rated: 2200 r/min; Maximum: 2500~3000 r/min
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Driving Power
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75~145 kW (Depends on Displacement Model)
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Connection Type
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D31.2 Involute Spline, Flange Connection; Tandem/Triple Pump Combination Available
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Operating Temperature
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-20 ºC ~ +100 ºC
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Dimensions & Weight
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Dimensions: 290×280×340 mm (Typical); Weight: 30~40 kg
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Certifications
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CE, ISO 9001
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4. Applications
The JHP3 gear pump is widely applied to high-power hydraulic systems of heavy machinery, and has been matched with well-known brands such as XCMG, Shantui, Lingong and Liugong. Typical applications include:
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Construction machinery: Large wheel loaders (e.g., XCMG 9541F), bulldozers, road rollers
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Mining machinery: Mine mucking loaders, coal mine roadheaders, drilling machinery
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Lifting & transportation equipment: Heavy-duty truck cranes, large dump trucks
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Agricultural machinery and special hydraulic vehicles
5. Operational & Customization Notes
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Vertical installation is recommended. Ensure the coaxiality error between the pump shaft and power source is controlled within a reasonable range to avoid abnormal wear of spline connections.
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Before initial startup, fill the pump with hydraulic oil and exhaust air completely. Use hydraulic oil that meets the specifications to maintain oil cleanliness, which helps extend the service life.
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Customization scope includes oil port size, external connection mode, spraying color and tandem/triple pump combination. MOQ is 1 unit for standard models, with flexible customization support.
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Packaging: Wooden case + carton + foam board for safe transportation. Warranty: 12 months for non-human damage, with professional after-sales service provided.
Shipping & Delivery
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