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DAIKIN variable piston pump V8 series models and parameters

Опубликовано: 2026-04-21 11:11:37　Просмотр: 69

Daikin hydraulic pumps

V8 Series Basic Model & Complete Configuration Models

The V8 series is a core part of DAIKIN variable piston pumps, featuring compact structure, low noise and high efficiency, suitable for various light and medium load hydraulic systems. Its basic model and common complete configuration models are as follows :

1. Basic Model

V8: Core basic model, with a fixed theoretical displacement, serving as the foundation for all V8 series configuration models

2. Common Complete Configuration Models

Combined with control methods, rotation direction, piping direction and design numbers, the common complete models of V8 series are listed below, including the European version (J-V series) with the same function but slight dimensional differences :

V8A1RX-20
J-V8A1RX-20 (European version)

Detailed Technical Parameters of V8 Series

The technical parameters of V8 series variable piston pumps are standardized, with slight differences according to specific configurations. The main parameters are shown as follows :

Parameter Item	Specification
Theoretical Displacement	8.0 cm³/rev
Rated Working Pressure	7 MPa (70 kgf/cm²)
Allowable Rotational Speed	500 - 1800 min⁻¹
Flow Adjustment Range (at 1800 min⁻¹)	4 - 14.4 L/min
Weight (with Type A Control)	8.9 kg
Working Principle	Axial piston pump, variable hydraulic pump (adjusting swash plate angle to change displacement)[5]
Volumetric Efficiency	≥ 95% (tested according to ISO 4409 standard)
Typical Application	Machine tools, forging equipment, injection molding machines, plastic molding machines, etc.[5]

Model Description Notes

The design number in the model (such as "20" in V8A1RX-20) is subject to change according to production batch and configuration requirements.
The European version J-V8 series (e.g., J-V8A1RX-20) has the same performance parameters as the standard V8 series but slight differences in installation dimensions.
The model configuration can be adjusted according to actual needs, such as fluid type, control method and pressure adjustment range.
When the drain port is blocked, the pressure compensation mechanism will fail, and the pump will switch to a fixed displacement pump state.

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