- 高强度铸铁材质
采用 ** 球墨铸铁（QT500-7）** 整体铸造，相比铝制壳体，抗扭刚性、抗冲击性能大幅提升，可承受重载工况下的高扭矩载荷与交变冲击，是矿山、工地等恶劣工况的首选材质。
- 加强筋一体成型结构
壳体表面分布多道横向加强筋，大幅提升整体刚度，减少工作时的振动与形变，避免因壳体变形导致的齿轮啮合偏差、轴承磨损加剧等问题。
- 预留精准安装接口
壳体上的螺纹孔、定位凸台均为原厂精密加工，可直接与变速箱端盖、取力器、换挡机构、传感器等部件精准对接，安装误差控制在行业高标准内，确保装配密封性与可靠性。
三、核心功能与作用
- 承载支撑：为变速箱内部的齿轮轴、轴承、同步器等部件提供稳定的安装基准，保证各传动部件的同轴度与啮合精度。
- 防护密封：隔绝外部粉尘、泥水、杂质进入变速箱内部，同时防止润滑油泄漏，维持内部清洁与润滑环境。
- 散热降噪：铸铁材质的良好导热性可辅助散发齿轮啮合产生的热量，同时壳体结构能有效抑制传动噪音向外传递，降低整车噪音。
四、产品优势与适配性
- 原厂品质保障
法士特原厂配套壳体，材质、铸造工艺、加工精度均符合主机厂标准，经过磁粉探伤、压力测试等多道质检工序，无砂眼、裂纹等铸造缺陷，使用寿命远超副厂件。
- 重载工况优化设计
针对矿山、工程运输等高频冲击、重载工况优化，壳体壁厚与加强筋布局均经过有限元分析，抗疲劳、抗冲击性能优异，不易出现开裂、渗漏等故障。
- 适配性强，维护便捷
与法士特 8DS 系列变速箱（如 8DS260）完全适配，标准化接口设计便于维修更换，无需额外加工，降低车辆停摆时间与维护成本。
五、使用与维护提示
- 安装前需清洁壳体内部，检查螺纹孔、轴承座是否存在磕碰损伤，确保配合面无杂质。
- 定期检查壳体表面是否存在裂纹、渗漏油现象，发现异常及时检修，避免故障扩大。
- 维修更换时，需按规定扭矩对角拧紧壳体螺栓，防止因受力不均导致壳体变形或密封失效。
1. Product Positioning & Basic Information
2. Core Structure & Design Features
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High-Strength Cast Iron Material
Made of ductile iron (QT500-7) via integral casting. Compared to aluminum housings, it offers significantly higher torsional rigidity and impact resistance, capable of withstanding high torque loads and alternating impacts in heavy-duty applications, making it the preferred choice for harsh mining and construction environments.
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Integrally Formed Reinforced Rib Structure
Multiple transverse reinforcing ribs on the housing surface greatly enhance overall rigidity, reducing vibration and deformation during operation. This prevents issues like gear meshing misalignment and accelerated bearing wear caused by housing deformation.
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Precision-Reserved Mounting Interfaces
All threaded holes and positioning bosses on the housing are precision-machined to factory standards, enabling accurate direct connection to transmission end covers, power take-offs (PTOs), shift mechanisms, sensors, and other components. Installation errors are controlled within industry-leading tolerances to ensure assembly tightness and reliability.
3. Core Functions & Roles
- Load-Bearing Support: Provides a stable mounting reference for internal gear shafts, bearings, synchronizers, and other components, ensuring coaxiality and meshing accuracy of all transmission parts.
- Protection & Sealing: Blocks external dust, mud, and debris from entering the transmission while preventing lubricant leakage, maintaining a clean and well-lubricated internal environment.
- Heat Dissipation & Noise Reduction: The excellent thermal conductivity of cast iron helps dissipate heat generated by gear meshing. The housing structure also effectively suppresses the outward transmission of operating noise, reducing overall vehicle noise levels.
4. Product Advantages & Compatibility
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Genuine OEM Quality Assurance
As a genuine FAST OEM housing, it meets host manufacturer standards in material, casting process, and machining precision. It undergoes rigorous quality checks including magnetic particle inspection and pressure testing to eliminate casting defects like porosity and cracks, offering a far longer service life than aftermarket alternatives.
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Optimized Design for Heavy-Duty Applications
Optimized for high-frequency impact and heavy-load conditions in mining and engineering transport. The housing wall thickness and reinforcing rib layout are designed using finite element analysis, delivering excellent fatigue and impact resistance, with low risk of cracking or oil leakage failures.
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High Compatibility & Easy Maintenance
Fully compatible with FAST 8DS-series transmissions (e.g., 8DS260). Standardized interface design allows for convenient repair and replacement without additional machining, minimizing vehicle downtime and maintenance costs.
5. Usage & Maintenance Tips
- Before installation, clean the housing interior and check for damage to threaded holes and bearing seats to ensure mating surfaces are free of debris.
- Regularly inspect the housing surface for cracks or oil leaks, and address anomalies promptly to prevent fault escalation.
- When replacing or repairing, tighten housing bolts diagonally to the specified torque to prevent housing deformation or seal failure caused by uneven stress.
