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The A20VG and A22VG pumps are engineered for high performance and reliability in demanding applications. Both models feature a robust internal structure comprising four key components: rotating elements, a variable displacement mechanism, a slanted plate with supporting bearings, and integrated control valves. The piston cylinder body and distribution plate work in tandem to ensure efficient energy conversion and unidirectional oil flow, while the variable piston and reset spring allow precise adjustment of displacement through hydraulic control. The slant plate mechanism enables infinitely variable flow by adjusting plunger stroke, supported by durable bearings for smooth operation. Additionally, built-in pressure and flow control valves maintain system stability and optimize performance under varying loads.
While both pumps share a nominal pressure rating of 350 bar, they differ in key performance and application characteristics. The A20VG series offers a broader displacement range (60–520 mL/rev) and is designed for open-circuit, multi-loop systems—making it ideal for construction machinery. In contrast, the A22VG series operates at a higher peak pressure (420 bar), features a narrower displacement range (35–45 mL/rev), and is optimized for closed-circuit, dual-loop vehicle systems, such as those used in specialized off-road vehicles.
Based on these specifications, we recommend the A22VG for high-pressure, closed-loop mobile applications and the A20VG for heavy-duty, multi-circuit industrial machinery.
The A20VG and A22VG pumps are engineered for high performance and reliability in demanding applications. Both models feature a robust internal structure comprising four key components: rotating elements, a variable displacement mechanism, a slanted plate with supporting bearings, and integrated control valves. The piston cylinder body and distribution plate work in tandem to ensure efficient energy conversion and unidirectional oil flow, while the variable piston and reset spring allow precise adjustment of displacement through hydraulic control. The slant plate mechanism enables infinitely variable flow by adjusting plunger stroke, supported by durable bearings for smooth operation. Additionally, built-in pressure and flow control valves maintain system stability and optimize performance under varying loads.
While both pumps share a nominal pressure rating of 350 bar, they differ in key performance and application characteristics. The A20VG series offers a broader displacement range (60–520 mL/rev) and is designed for open-circuit, multi-loop systems—making it ideal for construction machinery. In contrast, the A22VG series operates at a higher peak pressure (420 bar), features a narrower displacement range (35–45 mL/rev), and is optimized for closed-circuit, dual-loop vehicle systems, such as those used in specialized off-road vehicles.
Based on these specifications, we recommend the A22VG for high-pressure, closed-loop mobile applications and the A20VG for heavy-duty, multi-circuit industrial machinery.
