YUKEN Hydraulic Product Series
YUKEN (Yuken Kogyo Co., Ltd.), a well-known Japanese hydraulic component manufacturer, is renowned for its high-precision, reliable, and cost-effective hydraulic products. Its product range covers core hydraulic components widely used in industrial machinery, construction equipment, and automation systems. Below is a detailed introduction to its main product series:
1. Hydraulic Pumps
As one of YUKEN’s flagship product lines, hydraulic pumps are designed for stable pressure output and efficient energy conversion, suitable for medium-to-high pressure hydraulic systems.
Axial Piston Pumps
The core models include the A10, A22, A37, A56, and A70 series, which are variable-displacement axial piston pumps with working pressures up to 31.5 MPa. They feature flexible displacement adjustment (via pressure compensation, flow compensation, or electric proportional control) and are widely used in injection molding machines, hydraulic presses, and heavy-duty construction machinery. The pumps adopt a compact design with low noise and high volumetric efficiency (up to 95%), ensuring long-term stable operation under heavy loads.
Vane Pumps
Representative series such as PV2R, V10, and V20 are double-vane or single-vane fixed-displacement pumps, suitable for medium-low pressure systems (working pressure: 16–21 MPa). They are characterized by smooth operation, low noise, and high reliability, making them ideal for plastic machinery, machine tools, and light industrial equipment. The PV2R series, in particular, supports multi-pump combinations (e.g., tandem pumps) to meet complex flow requirements of multi-circuit systems.
External Gear Pumps
The IPH series (e.g., IPH-2B, IPH-4B) is a high-pressure external gear pump with a maximum working pressure of 21 MPa. It has a simple structure, low cost, and strong anti-pollution ability, suitable for low-precision hydraulic systems such as agricultural machinery, small lifting equipment, and auxiliary circuits of industrial machines.
2. Hydraulic Valves
YUKEN’s hydraulic valves cover all functional categories of hydraulic control, with precise control performance and strong compatibility, supporting the construction of flexible hydraulic circuits.
Directional Control Valves
Solenoid-Operated Directional Valves: The DSG series (e.g., DSG-01, DSG-03) is a 4/3-way or 4/2-way solenoid valve with a maximum working pressure of 31.5 MPa. It adopts wet-type solenoids (with strong anti-overheating performance) and is available in AC/DC voltage options, widely used in automated production lines and machine tools for actuator commutation control.
Manual Directional Valves: The DMG series is a manual spool valve, suitable for occasions requiring manual operation (e.g., small hydraulic lifts, manual control auxiliary circuits) with reliable operation and low maintenance needs.
Pressure Control Valves
Relief Valves: The DB series (direct-acting) and DG series (pilot-operated) relief valves are used to limit the maximum pressure of hydraulic systems, preventing overload. The DG series supports remote pressure adjustment and has high pressure stability, suitable for high-pressure systems such as hydraulic presses.
Pressure Reducing Valves: The DR series (e.g., DR-01) is a pilot-operated pressure reducing valve that provides stable low-pressure oil for auxiliary circuits (e.g., control circuits, lubrication circuits), with adjustable outlet pressure and low pressure fluctuation.
Flow Control Valves
Throttle Valves: The FG series (e.g., FG-01) adjusts flow by changing the throttle opening, suitable for simple speed control scenarios.
Speed Control Valves: The FCG series combines a throttle valve and a one-way valve, realizing one-way speed adjustment and reverse free flow, commonly used in the speed control of cylinders and motors (e.g., feeding mechanisms of machine tools).
Proportional Control Valves
The EFBG series (proportional directional flow valves) and EDG series (proportional pressure valves) integrate electronic proportional control technology, enabling stepless adjustment of flow or pressure via analog signals (0–10V/4–20mA). They are suitable for high-precision control scenarios such as injection molding machine mold opening/closing, robotic arms, and precision presses.
3. Hydraulic Cylinders
YUKEN’s hydraulic cylinders focus on structural reliability and installation flexibility, meeting the linear motion needs of different equipment.
Tie-Rod Hydraulic Cylinders
The HC series (e.g., HC2, HC4) is a standard tie-rod cylinder with a maximum working pressure of 21–31.5 MPa. It adopts a modular design (with optional rod end connections, cylinder ends, and seals) and is suitable for general industrial scenarios such as machine tool clamping mechanisms, material handling equipment, and press sliders.
Welded Hydraulic Cylinders
The HW series features a welded cylinder barrel (compact structure, high rigidity) and is designed for heavy-duty applications (e.g., construction machinery, mining equipment) with a maximum working pressure of up to 35 MPa. It supports custom stroke lengths and special rod surface treatments (e.g., hard chrome plating) to improve wear resistance.
Compact Hydraulic Cylinders
The HCS series has a small installation space and is suitable for equipment with limited space (e.g., small automated machinery, auxiliary clamping devices). It has a working pressure of 16–21 MPa and adopts a built-in buffer structure to reduce impact during movement.
4. Hydraulic Motors
YUKEN’s hydraulic motors are mainly used for low-speed, high-torque or high-speed, low-torque power output, with strong adaptability to harsh working conditions.
External Gear Motors
The GM series (e.g., GM-05, GM-10) is a fixed-displacement external gear motor with a maximum working pressure of 21 MPa. It has a simple structure, high torque density, and is suitable for low-speed, high-torque scenarios such as conveyor belt drives, winches, and rotating mechanisms of agricultural machinery.
Vane Motors
The VM series has smooth operation, low noise, and a wide speed range, suitable for medium-speed applications (e.g., small rotary tables, fan drives of industrial equipment) with good speed stability.
5. Hydraulic Power Units (HPUs)
YUKEN provides integrated hydraulic power units (customizable according to customer needs) that combine pumps, motors, valves, oil tanks, and filters into a single module. The HPU series supports power ratings from 0.75 kW to 75 kW and working pressures up to 31.5 MPa. It is pre-installed and debugged at the factory, reducing on-site installation time and is widely used in small hydraulic systems (e.g., automated door openers, small presses, and testing equipment).
YUKEN’s hydraulic products are characterized by high cost performance, strong environmental adaptability (supporting -10°C to 60°C working temperatures), and good interchangeability (compatible with international standards such as ISO and DIN). They are widely used in industries such as machinery manufacturing, automotive, construction, agriculture, and aerospace.
油研（YUKEN，油研工業株式會社）是日本知名的液壓元件制造商，以高精度、高可靠性和高性價比的液壓產品聞名。其產品范圍涵蓋廣泛應用于工業機械、建筑設備和自動化系統的核心液壓元件。以下是其主要產品系列的詳細介紹：
液壓泵
作為油研的旗艦產品線之一，液壓泵專為穩定的壓力輸出和高效的能量轉換而設計，適用于中高壓液壓系統。
軸向柱塞泵
核心型號包括 A10、A22、A37、A56 和 A70 系列，均為變量排量軸向柱塞泵，工作壓力可達 31.5MPa。它們具有靈活的排量調節功能（通過壓力補償、流量補償或電比例控制實現），廣泛應用于注塑機、液壓機和重型工程機械。該類泵采用緊湊型設計，噪音低且容積效率高（可達 95%），確保在重負荷下長期穩定運行。
葉片泵
代表性系列如 PV2R、V10 和 V20 系列，為雙葉片或單葉片定排量泵，適用于中低壓系統（工作壓力 16–21MPa）。其特點是運行平穩、噪音低且可靠性高，是塑料機械、機床和輕工設備的理想選擇。特別是 PV2R 系列，支持多泵組合（如雙聯泵），以滿足多回路系統的復雜流量需求。
外嚙合齒輪泵
IPH 系列（如 IPH-2B、IPH-4B）是高壓外嚙合齒輪泵，最大工作壓力為 21MPa。其結構簡單、成本低且抗污染能力強，適用于農業機械、小型起重設備和工業機械輔助回路等低精度液壓系統。
液壓閥
油研的液壓閥涵蓋液壓控制的所有功能類別，具有精確的控制性能和強大的兼容性，支持構建靈活的液壓回路。
方向控制閥
電磁換向閥：DSG 系列（如 DSG-01、DSG-03）為 4/3 通或 4/2 通電磁閥，最大工作壓力 31.5MPa。采用濕式電磁鐵（抗過熱性能強），提供交直流電壓選項，廣泛應用于自動化生產線和機床，用于執行器的換向控制。
手動換向閥：DMG 系列是手動滑閥，適用于需要手動操作的場合（如小型液壓升降機、手動控制輔助回路），運行可靠且維護需求低。
壓力控制閥
溢流閥：DB 系列（直動式）和 DG 系列（先導式）溢流閥用于限制液壓系統的最大壓力，防止過載。DG 系列支持遠程壓力調節，壓力穩定性高，適用于液壓機等高壓力系統。
減壓閥：DR 系列（如 DR-01）是先導式減壓閥，為輔助回路（如控制回路、潤滑回路）提供穩定的低壓油，出口壓力可調且壓力波動小。
流量控制閥
節流閥：FG 系列（如 FG-01）通過改變節流口開度調節流量，適用于簡單的速度控制場景。
調速閥：FCG 系列結合了節流閥和單向閥，實現單向速度調節和反向自由流動，常用于油缸和馬達的速度控制（如機床的進給機構）。
比例控制閥
EFBG 系列（比例方向流量閥）和 EDG 系列（比例壓力閥）集成了電子比例控制技術，可通過模擬信號（0–10V/4–20mA）實現流量或壓力的無級調節。適用于注塑機開合模、機械臂、精密壓力機等高精度控制場景。
液壓缸
油研的液壓缸注重結構可靠性和安裝靈活性，滿足不同設備的直線運動需求。
拉桿式液壓缸
HC 系列（如 HC2、HC4）是標準拉桿式油缸，最大工作壓力 21–31.5MPa。采用模塊化設計（可選桿端連接、缸端和密封件），適用于機床夾緊機構、物料搬運設備和壓力機滑塊等一般工業場景。
焊接式液壓缸
HW 系列采用焊接缸筒（結構緊湊、剛性高），專為重型應用設計（如工程機械、礦山設備），最大工作壓力可達 35MPa。支持定制行程長度和特殊的活塞桿表面處理（如硬鉻鍍層），以提高耐磨性。
緊湊型液壓缸
HCS 系列安裝空間小，適用于空間有限的設備（如小型自動化機械、輔助夾緊裝置）。工作壓力 16–21MPa，采用內置緩沖結構，減少運動過程中的沖擊。
液壓馬達
油研的液壓馬達主要用于低速大扭矩或高速小扭矩動力輸出，對惡劣工況的適應性強。
外嚙合齒輪馬達
GM 系列（如 GM-05、GM-10）是定排量外嚙合齒輪馬達，最大工作壓力 21MPa。結構簡單、扭矩密度高，適用于低速大扭矩場景，如傳送帶驅動、絞車和農業機械的旋轉機構。
葉片馬達
VM 系列運行平穩、噪音低且轉速范圍廣，適用于中速應用（如小型回轉工作臺、工業設備的風扇驅動），速度穩定性好。
液壓動力單元（HPUs）
油研提供集成式液壓動力單元（可根據客戶需求定制），將泵、電機、閥、油箱和過濾器組合成一個模塊。HPU 系列支持功率從 0.75kW 到 75kW，工作壓力可達 31.5MPa。在工廠預裝調試，減少現場安裝時間，廣泛應用于小型液壓系統（如自動開門器、小型壓力機和測試設備）。
油研的液壓產品具有高性價比、強環境適應性（支持 - 10°C 至 60°C 工作溫度）和良好的互換性（兼容 ISO、DIN 等國際標準）等特點，廣泛應用于機械制造、汽車、建筑、農業和航空航天等行業。
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