Basic Info
Model No.: SP-098
Product Description
The aluminum alloy H-shaped lower arm is manufactured from a single piece of 7075-T6 high-strength aerospace-grade aluminum alloy through advanced CNC milling technology. Featuring an optimized H-shaped structural topology, the central main passage incorporates longitudinal weight-reducing slots, while symmetrical U-shaped flange arms are positioned at both ends for secure ball seal mounting. The fork arm roots are designed with large radii and greased transitions to significantly reduce stress concentration, enhancing durability under dynamic loads. Each arm side includes two precisely aligned bolt holes, ensuring accurate positioning and reliable connection with subframe or body mounting points.
Select premium-grade aluminum alloy 7075 sheets, CNC-cut to the required dimensions of the support arm. Ensure consistent thickness and flatness of the blank, and remove internal impurities and defects to lay a solid foundation for subsequent processing and surface treatment.
Utilize a high-precision CNC machining center equipped with multi-axis capabilities to perform H-shaped milling, drilling of mounting holes, and simultaneous creation of weight-reduction slits and precision finishing of positioning surfaces. Leveraging years of expertise in CNC machining, we strictly control coaxiality, parallelism, and hole position tolerances to guarantee installation accuracy and uniform load distribution.
Apply both manual and mechanical deburring techniques to all milled corners, holes, and contour edges to eliminate residual sharp edges. Additionally, smooth critical stress transition zones to prevent stress concentration and significantly enhance the part’s overall structural strength and fatigue resistance.
Perform thorough degreasing, cleaning, and polishing prior to hard anodizing. This process forms a uniform, dense oxide layer on the surface, greatly improving hardness, wear resistance, and corrosion protection. Customizable colored oxide layers are available to balance performance requirements with aesthetic preferences.
Conduct full inspection using a three-coordinate measuring machine (CMM), clamping tools, and hole position manometers to verify dimensional accuracy, form and position tolerances, and surface quality. Only components passing all quality checks are approved for packaging and storage, ensuring compliance with stringent automotive industry standards.
Dongguan Shengpeng Precision Technology Co., Ltd. is a professional manufacturer specializing in CNC machining services, offering one-stop customized solutions. We support non-standard dimensions, special bore configurations, and structural optimization based on customer drawings or physical samples.
Available Materials: Aluminum alloy 6061, high-strength steel
Surface Treatments: Hard anodizing, color anodizing, sandblasting, oven painting
We are committed to delivering small-batch sampling for large-volume orders, ensuring stable product quality, timely delivery, and flexible service customization—fully meeting the diverse needs of customers across various vehicle models.
Product Categories : CNC Milling
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