Stepped Shaft Sleeve Connector

As a transitional connection node between the rotating shaft system and the fixed seat, this shaft sleeve structure, featuring a two-stage stepped outer diameter and a central through-hole, is primarily used to achieve coaxial docking of shaft sections with different diameters or to provide radial limitation. The wider flange at the bottom provides a stable support surface, while the slender cylindrical section at the top extends deep into the mating hole to ensure lasting alignment. A rectangular keyway (or slot) on the side is designed to transmit torque or prevent relative rotation. These components are commonly found in the motor output ends of automation equipment, lead screw support seats, or positioning stages of precision tooling fixtures.

The core of the manufacturing process lies in ensuring the coaxiality of the upper and lower outer diameters and the symmetry of the keyway relative to the central axis, preventing uneven loading or jamming after assembly. Due to the small overall size and uneven wall thickness distribution, clamping deformation's impact on inner hole tolerances must be strictly controlled. Additionally, the perpendicularity of the stepped surfaces and the consistency of chamfers are key inspection points to ensure tight fit with mating parts and avoid interference from sharp edges. For such parts with distinct rotational features, CNC lathes are typically used for main body forming, supplemented by milling operations to machine the lateral slots.

Shenzhen Chaozhuo Kuaijie Technology Co., Ltd. is equipped with CNC lathes from brands like Prex and high-precision machining centers, capable of precision turn-mill composite processing of various metal materials including stainless steel, carbon steel, aluminum, and copper alloys. The factory can conduct process evaluations based on customer-provided 2D/3D drawings, offering one-stop solutions from material selection and rough/fine machining path planning to surface post-processing (such as polishing, plating, or anodizing). This ensures that delivered products meet stringent assembly standards in terms of dimensional stability and appearance quality, satisfying delivery needs for both small-batch multi-variety and large-scale production.