The spline sleeve connection is composed of an inner spline and an outer spline. Both the inner and outer spline sleeves are multi-toothed components, with the spline on the inner cylindrical surface being the inner spline and the spline on the outer cylindrical surface being the outer spline. It is evident that the spline sleeve connection is an extension in number of the flat key connection.

Usage Features:

Due to differences in structural design and manufacturing processes, compared to flat key connections, spline sleeve connections have the following characteristics in terms of strength, process, and application:

　　1Due to the direct and even creation of more teeth and grooves on the shaft and hub bore, the bearing load is more evenly distributed.

　　2Due to the shallow groove, the stress concentration at the root of the teeth is smaller, resulting in less reduction in the strength of the shaft and hub.

　　3More teeth, larger total contact area, thus capable of withstanding greater loads.

　　4Axial components have good neutrality with the shaft, which is crucial for high-speed and precision machinery.

　　5Good guidance, which is crucial for dynamic connections.

　　6Available for grinding to enhance machining precision and joint quality.

　　7The manufacturing process is more complex, sometimes requiring specialized equipment, and costs are higher.

Application: Connections requiring high centering accuracy, large torque transmission, or frequent sliding.

Category: Keyed Connectors are divided into two types according to the different tooth shapes: rectangular keyed connectors and involute keyed connectors. Both types have been standardized.