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- 外圈大齿：用于主传动啮合，传递大扭矩动力；
- 内圈同步齿（花键齿）：与同步器配合，实现平稳换挡，减少冲击和噪音。
- 高强度制造工艺
- 采用优质合金钢材质，经渗碳淬火等热处理工艺，齿面硬度高、耐磨性能强，可承受重载和交变冲击载荷；
- 齿轮精度高，啮合间隙均匀，有效降低传动噪音和振动。
- 安装与适配性
- 中心带安装孔，外圈分布 6 个螺栓孔，可直接安装在变速箱轴上，适配性强；
- 原厂件尺寸公差严格，与变速箱其他部件完美匹配，避免安装误差导致的故障。
- 原厂品质保障：法士特（FAST）是国内商用车变速箱龙头品牌，原厂件的材质、工艺和精度均符合主机厂标准，使用寿命远超副厂件；
- 高可靠性：针对重载工况优化设计，抗冲击、抗疲劳性能优异，可适应恶劣的矿山、工地运输环境；
- 维护便捷：标准化的零件设计，便于维修更换，降低车辆停摆时间和维护成本。
Outer Large Gear Teeth: Used for main drive meshing, transmitting high-torque power.
Inner Synchronizer Teeth (Spline Teeth): Work in conjunction with the synchronizer to achieve smooth gear shifting, reducing impact and noise.
High-Strength Manufacturing Process
Made of high-quality alloy steel and subjected to heat treatment processes such as carburizing and quenching, ensuring high tooth surface hardness and excellent wear resistance. It can withstand heavy loads and alternating impact loads. The gear features high precision with uniform meshing clearances, effectively reducing transmission noise and vibration.
Installation and Compatibility
It is designed with a central mounting hole and 6 bolt holes distributed around the outer ring, allowing for direct installation on the transmission shaft for strong adaptability. As an original equipment manufacturer (OEM) part, it features strict dimensional tolerances for a perfect match with other transmission components, eliminating failures caused by installation errors.
Genuine Quality Assurance
FAST is a leading domestic brand of commercial vehicle transmissions. Its genuine parts meet the host manufacturer’s standards in terms of material, craftsmanship, and precision, boasting a service life far exceeding that of aftermarket alternatives.
High Reliability
Optimized for heavy-duty applications, it delivers excellent resistance to impact and fatigue, making it suitable for harsh working environments such as mines and construction sites.
Easy Maintenance
The standardized component design facilitates convenient repair and replacement, minimizing vehicle downtime and maintenance costs.
💡 Translation Notes:
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Terminology Precision:
同步齿（花键齿） → Synchronizer Teeth (Spline Teeth): Standard industry terms for gearbox components.渗碳淬火 → carburizing and quenching: Exact technical translation for this critical heat treatment process.原厂件 → original equipment manufacturer (OEM) part: Preferred term in automotive/industrial contexts over generic “genuine part”.副厂件 → aftermarket alternatives: Neutral, industry-accepted term for non-OEM replacement parts.
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Sentence Structure:
- Split long Chinese sentences into concise, active-voice English sentences, following technical writing conventions.
- Used bullet points and clear headings to maintain readability, mirroring the original layout.
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Tone & Style:
- Formal, objective, and aligned with the professional tone of heavy-duty machinery technical documentation.
- Avoided overly literal translations to ensure natural flow for English-speaking technicians.
细节
