Chains are divided into transmission chains, conveying chains, stainless steel chains, lifting chains, agricultural machinery chains, etc.
Sprockets are divided into driving sprockets and driven sprockets,
Driving sprocket: the driving sprocket is installed on the engine output shaft in the form of splines;
Driven sprocket: the driven sprocket is installed on the motorcycle drive wheel, and the power is transmitted to the drive wheel through the chain,
Generally, the driving sprocket is smaller than the driven sprocket, which can reduce the speed and increase the torque.
Performance characteristics of drive sprocket
① Selection of materials - large chain wheels and small chain wheels are stamped with high-quality carbon structural steel.
② Processing and processing technology - adopt advanced milling technology to make the tooth shape more accurate. The overall sprocket is subject to quenching and tempering heat treatment, which greatly improves its comprehensive mechanical properties. The tooth hardness reaches more than 68-72hra, which significantly improves the wear resistance of the sprocket. The surface was sprayed and electroplated.
③ Product series - economical and practical ordinary sprockets and high-quality sprockets with superior performance.
Disassembly and assembly of sprocket
1. Driving sprocket
The driving sprocket is combined with the engine output shaft in the form of splines and fixed with spline baffle or nuts. When disassembling, remove the sprocket cover, remove the chain, unscrew the spline baffle or fixed nut, and then pull out the small sprocket. When assembling, proceed in the reverse order.
2. Driven sprocket
① Support the main bow so that the rear wheels tilt up.
② Loosen the fastening nut and adjuster nut of the rear axle, and remove the chain box and chain.
③ Remove the rear brake pull rod and pull out the rear wheel assembly together.
④ Remove the bolts, nuts or retaining rings that fix the sprocket, and remove the sprocket rear hub or pin bolts.
⑤ During installation, proceed in reverse order. Tighten the sprocket fixing nut or bolt (30-50n. M) and the rear axle nut (50-80n. M) according to the specified torque.
Installation requirements and precautions of drive sprocket
Installation requirements
① The model of transmission sprocket shall be selected correctly according to the model specification.
② Check whether the position where the transmission sprocket is installed (transmission output countershaft, hub, etc.) is in good condition, otherwise it is necessary to repair or replace relevant parts.
③ Install the driving and driven sprockets in place according to the correct method, and tighten the fasteners to meet the specified torque requirements.
④ After installing the transmission chain and adjusting the tightness, check whether the chain and sprocket fit smoothly, are coplanar, and do not interfere with the chain cover.
matters needing attention:
① The driven sprocket shall be provided with locking measures.
② After the driven sprocket is loaded, the rear axle should be aligned by using the regulator and the marking line of the rear cradle (also known as the rear wheel fork), which can not only prevent the rear wheel from running away, but also avoid the early wear of the sprocket and chain.
③ It is best to replace the sprocket and chain at the same time. If only one of them is replaced, it will aggravate the wear of both sides.
④ Due to the high speed and small number of teeth of the driving sprocket, under the same conditions, the wear is faster than that of the driven sprocket, which is normal.
⑤ Regularly clean and lubricate the drive chain and drive sprocket to improve their service life.
