Rolling bearing and classification of risk of transmission

Rolling bearing and classification of risk of transmission - 2019 12 - 04 today we talk about in chapter 84 of the import and export tariff in 8483 and 8482 rolling bearing risk classification of the shaft. Bearing ( 轴承) It is a kind of important parts in the modern machinery and equipment. Imported bearing and domestic bearing difference between imported bearing material is better than domestic, heat treatment process is advanced, manufacturing high accuracy, manufacturing and assembly process more reasonable and therefore bearing service life is long, of course, the price is also higher. Look at the example: dalian some trade company declare imported cars with cylindrical roller bearings, declare tax number to 84823000 ( Cylindrical roller bearing, the temporary tariff rate 6%) The customs inspection that the goods are not cylindrical roller bearings, but a tapered roller bearing, belong in 84825000. 90 ( Other cylindrical roller bearing, tariff rate 8%) 。 Cylindrical roller bearing is single, the spherical roller bearings, with two race between inner ring and groove for spherical outer ring, the cylindrical roller bearing assembly. They are made up of two guard and entity of bore cylindrical or conical inner ring, and the composition of cylindrical roller with cage. Bearing cannot be split. Cylindrical roller bearing roller longitudinal and cross section is the circular arc surface ( Cylindrical roller bearing yes cross section is rectangular) , with automatic self-aligning ability, can absorb a certain amount of axial load. Such good bearing performance, when the axial stress bending or install different heart bearings can still be used normally. Spherical roller bearings mainly in paper making machinery, speed reducer, railway vehicle axle, gear box bearing, rolling mill rolling mill rolls, crusher, vibrating screen, printing machinery, woodworking machinery, all kinds of industrial reducer, vertical arrange ushering self-aligning bearing. Cylindrical roller bearing in 8482. Under 30, enjoy temporary tariff rate is 6%. Tapered roller bearing is refers to the roller for rolling bearing radial thrust tapered roller type. According to these bearings on the column number of the roller is divided into single row, double row and four row circular cone roller bearings of different structure. Single row tapered roller bearing axial load depends on the ability of contact Angle, the outer ring raceway Angle, the Angle, the greater the axial load capacity. Most dosage in tapered roller bearing is single row circular cone roller bearings. In the car's front wheel hub, using the small size of double row circular cone roller bearings. Four row circular cone roller bearings used in large cold, hot rolling mill, and other heavy machinery. Tapered roller bearing in 84825000, the tariff rate is 8%. Then about 8483 shaft, first introduces knowledge: goods drive shaft is composed of shaft, telescopic sleeve tube and a universal joint. Expansion sleeve can automatically adjust the change of the distance between the transmission and drive axle. Universal joint is to guarantee the gearbox output shaft and drive axle the change of the two input shaft axis Angle, and realizes the constant speed drive two axis. General universal joint cross shaft, cross bearing and flange fork, etc. Like steyr series heavy duty truck used with roller cross shaft universal joint drive shaft bearing, cooperate with short and thick cross shaft, can transfer bigger torque. In bearing end equipped with butterfly spring, pressure roller. Cross shaft end face increased with spiral flute of reinforced nylon gaskets, can prevent the big Angle or torque transmission power during sintering. Shaft belongs to 'have power transfer function' goods, tariff note: even if used for some special parts of the machine, is still in its 8483 tax items not specified, under the correct id number 84831090 ( Other transmission shaft and crank, including the camshaft and crankshaft) , the tariff rate 6%, and some companies may declare them for 84069000 (under Steam turbine parts) , the rate of 2%. Therefore, to pay attention to the risk of transmission shaft, camshaft, crankshaft, avoid in steam turbine parts under. Source: 'the tianjin customs association'