Before purchasing a QD (Quick Detachable) sprocket, there are several parameters that need to be determined to ensure you select the right product for your specific application. Here are the key parameters to consider:

1. chain Size: Determine the size and type of chain that will be used with the sprocket. This includes the pitch, roller diameter, and width of the chain. The QD sprocket must be compatible with the corresponding chain size to ensure proper engagement and smooth operation.
2. Sprocket Teeth: Identify the desired tooth count for the sprocket based on your application requirements. The tooth count determines the speed ratio and torque transmission characteristics. Consider factors such as rotational speed, load capacity, and power requirements when selecting the tooth count.
3. Bore Size: Determine the required bore size of the QD sprocket. This should match the diameter of the shaft or hub on which the sprocket will be mounted. The bore size may be specified in inches or millimeters, so ensure compatibility with your shaft or hub dimensions.
4. Bushing Size: QD sprockets utilize bushings to attach the sprocket to the shaft or hub. Determine the appropriate bushing size based on the bore size of the sprocket and the diameter of the shaft. The bushing should provide a secure and reliable connection between the sprocket and the shaft or hub.
5. Material and Finish: Consider the material and finish of the QD sprocket based on the application requirements. Common materials include steel, cast iron, and stainless steel. Factors such as corrosion resistance, strength, and environmental conditions should influence the choice of material and finish.
6. Load Capacity: Evaluate the anticipated load capacity and operating conditions of the sprocket. This includes factors such as torque, speed, and shock loads. Ensure that the selected QD sprocket is capable of handling the expected loads to prevent premature wear or failure.