Sprocket parameter calculation formula: indexing circle diameter: d=p/sin (180°/z) p = pitch check table z = number of teeth tooth top circle (outer diameter): d=p × (0.54+cot180°/z) commonly used sprocket pitch: 3/8=9.525 1/2=12.7 5/8=15.875 3/4 = 19.053 points 4 points 5 points 6 points indexing circle diameter :d=p/sin (180°/z) Top tooth circle diameter: dmax=d+1.25p-d1dmin=d+ (1-1.6/z) p-d1 root circle diameter: df=d-d1 Note: p chain pitch z sprocket number of teeth d1 chain roller diameter The simple algorithm is {? min} = indexed circle diameter divided by {number of teeth+2} sprocket model: includes non-standard sprockets (customized according to customer drawings), standard sprockets (American standard and metric). Sprocket commonly used material: C45 sprocket Common processing method: quenching treatment, surface blackening treatment. General principles for selecting sprocket teeth: 19 teeth or above are generally used for active sprockets operating under medium and high speed and normal working conditions. The 17 teeth are for small pitch drive sprockets only. 23 teeth or more are recommended for impact situations. When the speed ratio is low, using a high-gear sprocket can greatly reduce the rotation amount of the i-link, the tensile load of the chain, and the load of the bearing. Maintenance 1. The tightness of the sprocket should be appropriate. If it is too tight, it will increase power consumption, and the bearing is easy to wear; if it is too loose, the sprocket is easy to beat and break the chain. The degree of tightness of the sprocket is: lifted or pressed down from the middle of the sprocket, about 2%-3% of the center distance between the two sprockets. 2. The sprocket should be mounted on the shaft without swinging or skewing. The end faces of the two sprockets in the same transmission assembly should be in the same plane. When the center distance of the sprocket is less than 0.5 meters, it can be 1 mm deviation; when the center distance of the sprocket is more than 0.5 meters, it can be a deviation of 2 mm. However, there can be friction on the side of the sprocket teeth. If the two wheels are offset too large, it is easy to cause unchain and accelerated wear. Care must be taken to check and adjust the offset when changing sprockets. 3. After the sprocket is seriously worn, the new sprocket and the new chain should be replaced at the same time to ensure good meshing. You can't just replace a new sprocket or a new chain alone. Failure to do so will cause poor meshing to accelerate wear on the new sprocket or chain. After the tooth surface of the sprocket has worn to a certain extent, it should be turned over and used in time (refers to a sprocket with an adjustable surface) to prolong the use time. 4. The new sprocket is too long or stretched after use, and it is difficult to adjust. Depending on the situation, the link can be removed, but it must be an even number. The link should pass through the back of the sprocket, with the latch inserted outside, and the opening of the latch should be in the opposite direction of rotation. 5. The sprocket should be lubricated in time during work. Lubricating oil must enter the mating gap between the roller and inner sleeve to improve working conditions and reduce wear. 6. The old sprocket cannot be mixed with some new sprockets, otherwise it is easy to cause shock in the transmission and break the chain. 7. When the machine is stored for a long time, the sprocket should be removed and cleaned with kerosene or diesel, and then coated with oil or butter and stored in a dry place. The icon price is for convenience only and is not used as the actual transaction price. The same price varies according to the processing content and requirements of the customer's drawing sample length, pitch size, plate thickness, wire diameter, etc. Due to different processing needs, please contact customer service for quotation before placing an order! Tel: 15165990946/15624335598 About after-sales 1. Transportation 020202Most of our products are bulky or heavy items. The cost of shipping goods to different regions is different. The shipping cost of goods sent to different regions is calculated according to the weight of the item, so please contact us before purchasing, and we will charge you a certain shipping fee according to the quotation of the logistics party. 2. Regarding receipt 020202, please check the goods for damage and quantity before signing for receipt. If there is damage or wrong quantity, please be sure to refuse or return it. If the customer rashly signs for receipt without careful inspection, the consequences shall be borne by the customer. 3. Regarding after-sales 020202, if the quantity or content of the product does not match the actual situation, it is confirmed that it is our problem, and we will return the product free of charge. For non-quality returns, the buyer is responsible for the round-trip shipping cost and 15% depreciation fee for the item, and the packaging loss needs to be calculated separately according to the actual situation. 4. About the product 02 02 All products in our store are non-standard custom physical photography. All products have product description instructions. Please read the details of the baby clearly before purchasing. If you have any objections, please consult clearly before purchasing, so as not to cause unnecessary misunderstandings to your relatives.