Precision-machined openings in differential cases for axle shaft installation and torque transmission.
Axle shaft openings are precisely machined cylindrical bores located on opposite sides of a differential case, designed to accommodate and secure axle shafts. These openings serve as the interface between the differential assembly and the vehicle's driven wheels, allowing torque transfer from the differential gears to the axle shafts while maintaining proper alignment and bearing support. The openings typically feature splined or keyed surfaces to engage with corresponding features on axle shafts, ensuring positive torque transmission without slippage.
诱因 → 失效模式 → 工程缓解
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The primary function is to provide precise mounting and torque transfer interfaces between the differential assembly and axle shafts, enabling power transmission to the vehicle's driven wheels while maintaining proper alignment and bearing support.
Common materials include forged or cast steel alloys like SAE 4140 or SAE 8620, typically case-hardened to achieve surface hardness of 58-62 HRC for wear resistance while maintaining core toughness.
They are precision-machined using CNC turning and boring operations, followed by broaching or hobbling for spline formation. Heat treatment (carburizing and tempering) is applied, with final grinding or honing to achieve required tolerances and surface finishes.
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