The selection calculation of roller chain transmission mainly includes determining the specification and number of chain links of a chain transmission system, the number of teeth and center distance of the driving and driven sprocket, and the installation, debugging, and lubrication requirements of the transmission system.
Since the load characteristics, application environment, and implementation of the chain drive are very different in specific use, it is still necessary to ensure that the selected chain and sprocket products meet the requirements of this standard and the user’s requirements. The supplier of the product should be consulted about the relevant situation. The following are the specific transmission design elements of the roller chain, we hope it can help everyone.
Design Parameters of Chain Transmission
Before selecting the chain and sprocket, the following design parameters must be determined:
1. The delivered power;
(1) Input power: Input power refers to the power to be transmitted by the active sprocket.
(2) Modified power: Taking into account the influence of active system characteristics and the type of load transferred.
2. Types of driving and driven machinery;
3. Rotation speed and diameter of the main and driven shafts;
4. The center distance and the layout of the shaft system;
5. Environmental conditions
For chain selection, the single-row chain with the smallest pitch can be selected according to the modified power and the speed of the small sprocket. When a more compact transmission arrangement is required, a multi-row chain with a smaller pitch can be selected, so that the diameter of the sprocket will also be reduced. In order to ensure that the wear of the chain drive is reduced, a suitable lubrication method should be used. The lubrication method depends on the speed and rated power of the chain.
Design points of Chain Transmission
1. The center distance of chain drive
The preferred value of the center distance is 30-50 times the chain pitch, but the wrap angle of the chain on the small sprocket should not be less than 120 degrees.
2. Adjustment of chain tension
The chain tension is mainly based on the adjustment of the center distance. In addition, tensioning can be achieved through the use of tensioning wheels, idler sprocket wheels, and other methods. Especially for inclined transmission with an angle of more than 60 degrees from the horizontal, tensioning should be considered, and care should be taken to avoid additional loads on the chain.
3. Chain sag
The allowable sag at the midpoint of the chain edge is 1%-3% of the center distance value. (Anchor chain, chain factory, lifting chain, mining chain, high-strength chain, ship anchor chain)
As an expert who has studied roller chains for many years, ZMIE can give you some professional advice to a certain extent. If you have a demand for this, you can send your demand to us, and we will give you a satisfactory answer in time.
As an experienced quality chain supplier, ZMIE has become a leader in the industry with its excellent manufacturing technology and considerate service, and many customers choose ZMIE for this reason. We are equipped with a professional production team and a strict quality inspection system to fully control the quality of our products. In addition, we can also provide a thoughtful one-stop service according to the needs of users. If you want to buy our roller chain, please contact us immediately!