Mechanism, Performance & Applications of A2FO Fixed Displacement Piston Pump

Core Structure & Working Principle

1. Rotating Group (Cylinder Block & Pistons): 7 or 9 odd-numbered pistons rotate with the shaft to smooth flow and cut pressure pulsation.
2. Fixed Swashplate: Angled static cam converting shaft rotation into piston reciprocation to set pump displacement.
3. Valve Plate: Stationary port component with two kidney ports, controlling fluid suction on piston retraction and high-pressure discharge on extension.

Practical Case

Core Strengths: High Efficiency & Extreme Durability

1. Compact, Energy-Saving Design

   Built to global SAE, DIN and ISO mounting standards with outstanding power density. Optimized clearances reduce internal leakage, while upgraded slippers and bearings cut mechanical friction. Combined hydraulic & mechanical efficiency lowers power consumption and system heat for stable long-running operation.

2. Heavy-Duty Service Life

   Main variants sustain continuous pressure up to 350 bar. Tolerant of fluid contamination per ISO cleanliness standards, it works reliably amid vibration, abrasive dust and corrosive saline marine environments, ideal for stamping presses, foundries and offshore hydraulics.

Ideal Application Scenarios

• Industrial HPUs: Fixed-speed power sources for machine tools, plastic machinery and assembly lines
• Fixed-volume drives: Conveyors, roller presses and mixing equipment
• Construction & farm machinery auxiliaries: Fans, winches and lube pumps with constant PTO flow
• Marine & offshore equipment: Deck machinery, windlasses and auxiliary steering hydraulics
• Test benches: Material and component fatigue test rigs needing repeatable stable base flow

System Selection Guide