Cast Crankcase Housing With Gearbox Housing and Peripheral Bolt Flange Holes

Aluminium die casting delivers the thin walls, integrated ribbing, and complex internal geometry required for lightweight gearbox housings; without casting, each internal rib would require expensive multi-axis machining from solid. Ningbo Yujun produces this gearbox housing with peripheral bolt flange holes under IATF 16949 and ISO 9001 certification, casting the crankcase form and CNC milling bearing bores, flange faces, and bolt hole positions to your drawing's tolerances. Bearing bore cylindricity and flange face flatness determine gear shaft alignment and sealing performance; both are verified per your print at the Ningbo, Zhejiang facility. The production area measures around 4,000 m², serving aerospace, medical equipment, and military applications. In-house finishing includes anodizing, electroplating, and spray paint for automotive and EV gearbox applications. EDM is available for precision oil gallery features. Provide your casting and machining drawing with bore diameters, flange dimensions, and surface treatment requirement. Yujun will confirm the process route and submit a formal quotation.