A17-Piston-Pump
cissoko
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The A17 Hydraulic Piston Pump is a high-pressure, fixed-displacement axial piston pump utilizing the bent-axis design. It is engineered specifically for open-circuit mobile hydraulic applications, making it the industry benchmark for direct mounting onto commercial vehicle Power Take-Off (PTO) boxes.
Extreme Operating Pressure: Safely handles a heavy-duty continuous working pressure of 350 bar (5,075 psi), with brief intermittent peaks stretching up to 400 bar (5,800 psi).
Integrated Case Drainage: Features a smart internal check-valve routing network that vents internal leakage oil straight back into the low-pressure suction port. This eliminates the need for an external, separate case drain line, drastically simplifying plumbing.
High Volumetric Efficiency: Precision-machined cylinder blocks and metal-to-metal sealing surfaces ensure minimal fluid slippage, providing reliable lifting flow even under extreme temperatures and maximum load conditions.
Excellent Self-Priming: The bent-axis geometry creates aggressive suction dynamics, allowing the pump to pull oil smoothly at truck engine idling speeds without starvation or cavitation risks.
| Parameter | Specification | Unit | Remarks |
|---|---|---|---|
| Design | High-Strength Cast Iron / Bent-Axis Piston Design | — | Lightweight and compact construction optimized for truck PTO applications |
| Flange Standard | ISO 7653 Standard (4-Bolt Square Flange) | — | 4-bolt square truck flange with an 80 mm pilot diameter |
| Drive Shaft Type | DIN 5462 (8 × 32 × 36) Rectangular Spline | — | Standard 8-tooth splined shaft; a common interface for heavy-duty trucks worldwide |
| Nominal Pressure | 350 (5,075) | bar (psi) | Standard pressure for stable long-term continuous operation across the series |
| Maximum Pressure | 400 (5,800) | bar (psi) | Maximum pressure permitted momentarily during the peak lifting stage of a single operating cycle |
| Operating Mode | Open Circuit | — | Designed for hydraulic circuits in truck tipping and crane systems |
| Rotation Direction | Left-Hand (L / CCW) or Right-Hand (R / CW) | — | The mechanical rotation direction can be changed on site by rotating the rear cover by 180° |
| Seal Material | FKM Fluoroelastomer (Viton) | — | Standard high-temperature and corrosion-resistant seals |
| Recommended Hydraulic Fluid | Anti-Wear Hydraulic Oil (HLP / ISO VG 32, 46 or 68) | — | Select the appropriate viscosity according to the ambient operating temperature |

Applications
Heavy-Duty Dump Trucks: Powers heavy multi-stage telescopic cylinders for rapid, high-capacity tipping.
Truck-Mounted Cranes (Knuckle-Boom): Supplies precise, ultra-high-pressure flow to multi-axis loader cranes and winches.
Hookloaders & Skiploaders: Manages the severe structural hydraulic loading needed to haul containers onto truck beds.
Municipal and Refuse Vehicles: Powers heavy waste packers, ejector blades, and snowplow systems.


A17 hydraulic piston 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.
High Power Density & Pressure: The A17 utilizes a bent-axis piston design that safely handles continuous operating pressures up to 350 bar (5,075 psi) and peak pressures up to 400 bar (5,800 psi). This delivers massive lifting power in a compact package.
Optimized for Truck Chassis: It is specifically engineered to bolt directly onto commercial vehicle Power Take-Off (PTO) boxes using standard ISO 4-hole / DIN 5462 interfaces (8x32x36mm splined shaft), requiring no extra mounting brackets.
Field Reversible: Yes, most A17 series pumps are designed to be bi-rotational, but they must be manually configured for either Clockwise (CW) or Counter-Clockwise (CCW) rotation before installation to match your truck's PTO.
The Procedure: You must loosen the heavy bolts on the rear port casing, rotate the rear cover exactly 180 degrees relative to the main pump housing, and ensure the internal timing pins align with the desired rotation mark stamped on the body.
Critical Danger: Never run the pump without matching the cover alignment to the PTO rotation. Running it backward will cause immediate internal oil starvation, destroying the piston shoes and cylinder block within seconds.
Internal Wear & Bypassing: This is a classic symptom of advanced internal clearance wear. When the hydraulic oil is cold and thick, the pump can still build pressure. As the oil gets hot and thins out, it easily slips past the worn spaces between the pistons and the cylinder block bores.
Extreme Heat Generation: This internal bypassing acts like a bottleneck under pressure, converting mechanical energy straight into heat. If your pump housing feels significantly hotter than the reservoir tank, it indicates the pump needs a rebuild or replacement.
Inlet Cavitation: Piston pumps pull fluid at high velocities. If the truck driver revs the engine too high, or the suction hose is restricted, the pump pulls a hard vacuum. This creates tiny vapor bubbles in the oil that collapse violently against the metal internals, producing a loud rattle.
Plumbing Checklist: Ensure your suction hose is wire-reinforced (to prevent it from collapsing flat under vacuum) and has a minimum diameter matching factory specs (usually 1.5 to 2 inches). Also, inspect the oil reservoir's air breather cap for dirt blockages.
Internal Case Drain: Like many specialized truck pumps, the A17 usually features an internal check valve network that vents case leakage directly into the low-pressure suction port, eliminating the need for a third external drain hose.
Diagnosing Flange Leaks: If you see hydraulic oil dripping from the weep hole where the pump meets the PTO, the front shaft seal has failed. This is rarely just a bad rubber seal; it is usually caused by excessive internal wear over-pressurizing the pump case, or a worn PTO output bearing causing the shaft to wobble and deform the seal lip.
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
A17-Piston-Pump piston 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.
1.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.
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.
Of course we can. Just send me your logo we can make it for you.
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%).
The Cissoko 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.
Cissoko 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.
All hydraulic pumps produced by Cissoko Hydraulic have undergone compliance testing, ensuring their quality and reliability.
To meet the diverse needs of different industries, the Cissoko 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.
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.