CNC Machined Double Keyway Shaft Sleeve

The positional tolerance between the central bore and the symmetrical keyways at both ends is a core indicator for assessing the assembly precision of this rotary component. As a critical connection piece in mechanical transmission systems, this structure utilizes radially penetrating keyways to transmit torque and provide circumferential fixation between shafts and hubs. Additionally, threaded holes on the sides work with set screws to provide extra axial locking force, preventing relative slippage during high-speed operation.

The main body of the part exhibits a typical metallic cutting luster, with surfaces finely polished to remove machining tool marks while preserving the dense texture of the material. During processing, strict control is maintained over the coaxiality of the inner and outer circles and the perpendicularity of the keyway sidewalls. This ensures that the clearance with the mating shaft meets precision fit standards such as H7/g6. The positional accuracy of the counterbored holes on both sides directly affects the uniform distribution of locking force, avoiding stress concentration or thread stripping risks caused by eccentric loading.

Leveraging our factory's existing high-precision CNC lathes and vertical machining centers, we efficiently manufacture such parts with combined turning and milling features. Full-dimensional inspection of key geometric tolerances is conducted using Hexagon CMMs. For different base materials such as stainless steel, aluminum alloy, or carbon steel, we provide one-stop solutions ranging from rough and finish machining to surface treatments like nickel plating, blackening, or anodizing. Please provide 2D/3D drawings with complete tolerance annotations for an accurate quote.