トンキーマシンのロゴ
Q1: What is the product identification and applicable scope of the Yn35V00049f1/Kdrde5kr-31 40c50-213 solenoid valve?
A1: の Yn35V00049f1 そして Kdrde5kr-31 40c50-213 are OEM-compatible high-performance solenoid valves—core hydraulic control components exclusively engineered for Kobelco SK200-8 (20-トンクラス), SK230-8 (23-トンクラス), and SK350-8 (35-トンクラス) 8-series mid-to-heavy duty excavators:
コア製品 & 互換性の詳細
- モデルの差別化:
- 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.
- 適用油圧ショベル & エンジン:
- SK200-8: Equipped with Kobelco J05E diesel engine (114kW @ 2100rpm), used in municipal engineering, 中規模土木工事, そしてインフラ建設;
- SK230-8: Fitted with Kobelco J05E engine (129kW @ 2100rpm), deployed in foundation works and small-scale quarrying (medium-heavy load);
- SK350-8: Matched with Kobelco J08E diesel engine (184kW @ 2000rpm), 大規模な採石を対象とした, 採掘補助作業, および大規模インフラプロジェクト.
The valves are suitable for fault replacement (例えば, コイル断線, バルブコアの詰まり, 油漏れ, 信号障害) and routine hydraulic system maintenance, ensuring precise fluid control for Kobelco 8-series excavators’ operational efficiency and stability.
第2四半期: 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:
動作原理
- When energized with DC 24V power (standard for Kobelco 8-series), 内部コイルが磁場を生成し、プランジャーを引っ張ります。, adjusting the valve core opening to control hydraulic oil flow direction and volume. 電源が切れたとき, 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.
コア機能
- Precise Hydraulic Control: Regulates hydraulic oil flow for excavator working mechanisms (ブーム持ち上げ, arm extending, バケツ掘り) 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 (最大34.3MPa) 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;
- ECM通信 & Fault Diagnosis: Transmits real-time valve status signals to the excavator’s ECM, triggering Kobelco-specific Diagnostic Trouble Codes (DTC) 異常の場合 (例えば, コイル短絡, 信号ドリフト) to facilitate quick troubleshooting;
- 緊急時の保護: Automatically switches to pressure relief mode if the valve core jams or power fails, protecting the hydraulic pump, シリンダー, and pipelines from catastrophic damage;
- 低電力動作: Standby power consumption ≤0.4W, 機器の長期スタンバイ時のバッテリーの消耗を軽減.
モデル固有の最適化
- 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:
| パラメータ | Yn35V00049f1 (SK200-8/SK230-8) | Kdrde5kr-31 40c50-213 (SK350-8) |
|---|---|---|
| 動作電圧 | DC24V (20–28Vワイドレンジ) | DC24V (20–28Vワイドレンジ) |
| 定格電流 | 1.2a | 1.5a |
| 使用圧力範囲 | 0–34.3MPa | 0–37.5MPa |
| 応答時間 (開く/閉じる) | ≤0.08s / ≤0.06秒 | ≤0.07s / ≤0.05秒 |
| コイル抵抗 | 42–45Ω | 38–42Ω |
| 保護等級 | IP67 (防塵・防水) | IP67 (強化された密閉性) |
| 動作温度範囲 | -40℃～+90℃ | -40℃～+100℃ |
| 耐振動性 | ≤18g (10–2000Hz) | ≤22g (10–2000Hz) |
| 取り付けインターフェース | M14×1.5ネジ (油圧バルブブロック) | M16×1.5 threaded (high-pressure valve block) |
| コネクタの種類 | 4-ピン防水ソケット (Kobelco standard) | 4-ピン防水ソケット (Kobelco standard) |
| 互換性 | SK200-8/SK230-8 J05E engine | SK350-8 J08E engine |
| 耐用年数 | ≧8,000稼働時間 | ≥7,500 operating hours |
