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Q1: What is the product identification and applicable scope of the Yn35V00049f1/Kdrde5kr-31 40c50-213 solenoid valve?
A1: El Yn35V00049f1 y Kdrde5kr-31 40c50-213 are OEM-compatible high-performance solenoid valves—core hydraulic control components exclusively engineered for Kobelco SK200-8 (20-clase de tonelada), SK230-8 (23-clase de tonelada), and SK350-8 (35-clase de tonelada) 8-series mid-to-heavy duty excavators:
Producto principal & Detalles de compatibilidad
- Diferenciación de modelos:
- Yn35V00049f1: Primary OEM replacement for SK200-8/SK230-8, designed for main hydraulic system flow regulation (boom/arm/bucket action control);
- Kdrde5kr-31 40c50-213: High-pressure variant for SK350-8 and SK230-8 heavy-load configurations, focusing on hydraulic pump pressure control and overload protection.
- Excavadoras aplicables & motores:
- SK200-8: Equipped with Kobelco J05E diesel engine (114kilovatios @ 2100rpm), used in municipal engineering, movimiento de tierras a mediana escala, and infrastructure construction;
- SK230-8: Fitted with Kobelco J05E engine (129kilovatios @ 2100rpm), deployed in foundation works and small-scale quarrying (medium-heavy load);
- SK350-8: Matched with Kobelco J08E diesel engine (184kilovatios @ 2000rpm), destinado a canteras a gran escala, trabajos auxiliares mineros, y proyectos de infraestructura pesada.
The valves are suitable for fault replacement (P.EJ., quemado de la bobina, atasco del núcleo de la válvula, fuga de aceite, fallo de señal) and routine hydraulic system maintenance, ensuring precise fluid control for Kobelco 8-series excavators’ operational efficiency and stability.
Q2: What is the working principle and core functions of the solenoid valves for SK200-8/SK230-8/SK350-8?
A2: As key “electromechanical switches” for the hydraulic systems of Kobelco 8-series excavators, these solenoid valves regulate hydraulic oil flow and pressure via electromagnetic induction, with functions tailored to each model’s load demands:
Principio de funcionamiento
- When energized with DC 24V power (standard for Kobelco 8-series), La bobina interna genera un campo magnético que tira del émbolo., adjusting the valve core opening to control hydraulic oil flow direction and volume. Cuando se corta la energía, the return spring resets the valve core to the default position, cutting off or diverting fluid flow.
- For SK350-8’s Kdrde5kr-31 40c50-213, the valve core opening is dynamically adjusted via PWM (Pulse Width Modulation) signals from the ECM, enabling stepless pressure regulation for heavy-load scenarios.
Funciones principales
- Precise Hydraulic Control: Regulates hydraulic oil flow for excavator working mechanisms (levantamiento de pluma, arm extending, excavación con cucharón) with response time ≤0.08s, ensuring smooth and accurate operation even during rapid load changes;
- Load-Adaptive Pressure Regulation:
- SK200-8/SK230-8 (Yn35V00049f1): Maintains stable pressure (máx. 34,3 MPa) for medium-load operations, optimizing fuel efficiency and reducing hydraulic system wear;
- SK350-8 (Kdrde5kr-31 40c50-213): Supports high-pressure operation (max 37.5MPa) for heavy digging and mining, with overload protection to prevent system damage;
- Comunicación ECM & Fault Diagnosis: Transmits real-time valve status signals to the excavator’s ECM, triggering Kobelco-specific Diagnostic Trouble Codes (DTC) para anomalías (P.EJ., cortocircuito de la bobina, deriva de señal) to facilitate quick troubleshooting;
- Protección de emergencia: Automatically switches to pressure relief mode if the valve core jams or power fails, protecting the hydraulic pump, cilindros, and pipelines from catastrophic damage;
- Low-Power Operation: Standby power consumption ≤0.4W, reducing battery drain during long-term equipment standby.
Optimizaciones específicas del modelo
- SK200-8: Yn35V00049f1 optimized for energy efficiency, with balanced flow control to match the J05E engine’s output;
- SK230-8: Yn35V00049f1 with enhanced vibration resistance (≤18g) for medium-heavy load construction sites;
- SK350-8: Kdrde5kr-31 40c50-213 with reinforced valve body and high-pressure seals, adapting to the J08E engine’s high hydraulic demand and frequent overload scenarios.
Q3: What are the key technical parameters of the Yn35V00049f1/Kdrde5kr-31 40c50-213 solenoid valves?
A3: All parameters are calibrated to Kobelco 8-series excavators’ hydraulic and electrical system requirements:
| Parámetro | Yn35V00049f1 (SK200-8/SK230-8) | Kdrde5kr-31 40c50-213 (SK350-8) |
|---|---|---|
| Voltaje de funcionamiento | CC 24 V (20–28V wide range) | CC 24 V (20–28V wide range) |
| Corriente nominal | 1.2A | 1.5A |
| Rango de presión de trabajo | 0–34,3MPa | 0–37.5MPa |
| Tiempo de respuesta (Abrir/Cerrar) | ≤0.08s / ≤0,06 s | ≤0.07s / ≤0,05 s |
| Resistencia de la bobina | 42–45Ω | 38–42Ω |
| Clasificación de protección | IP67 (polvo/impermeable) | IP67 (sellado mejorado) |
| Rango de temperatura de funcionamiento | -40℃ ~ +90℃ | -40℃ ~ +100℃ |
| Resistencia a las vibraciones | ≤18g (10–2000Hz) | ≤22g (10–2000Hz) |
| Interfaz de montaje | Rosca M14×1,5 (bloque de válvulas hidráulicas) | M16×1.5 threaded (high-pressure valve block) |
| Tipo de conector | 4-clavija impermeable (Kobelco standard) | 4-clavija impermeable (Kobelco standard) |
| Compatibilidad | SK200-8/SK230-8 J05E engine | SK350-8 J08E engine |
| Vida útil | ≥8,000 operating hours | ≥7,500 operating hours |
