Everyone should know that there must be support points in places where there are bearings. The inner support point of the bearing is the shaft, and the outer support is the commonly known bearing seat. Since one bearing can use different bearing seats, and one bearing seat can also use different types of bearings at the same time, there are many varieties of bearing housings. Many large foreign bearing companies also have their own bearing housing catalogue. However, the same bearing housing models are not exactly the same in different company samples. Factors such as the diversification of the bearing housings have brought many inconveniences to the user. For applications where standard housings are not suitable, housings with different materials such as: grey cast iron, ductile iron and cast steel, stainless steel, plastic special housings are available. Bearing housing classification The bearing housing is divided into: split bearing housing, sliding bearing housing, rolling bearing housing, flanged bearing housing, and outer spherical bearing housing. Vertical SNL vertical housing Large SNL housing SDG vertical bearing SONL vertical bearing SAF vertical bearing SDAF vertical bearing Integral SBD vertical bearing TVN vertical housing TN vertical housing Flange FNL series flanged housing Oil lubricated housing 7225(00) series flanged housing I-1200(00) flanged housing According to the different requirements of the bearing and the bearing housing, the classification of the bearing housing is not completely the same. When using it, it should be carefully checked according to the design. First, the overall bearing housing The outer spherical bearing is also called the bearing unit. When there is no bearing, it is called the outer spherical bearing. The outer spherical bearing housing is divided into 200 series, 300 series and XOO series according to the bearing series. The outer spherical bearing seat is divided into a vertical seat (P seat), a square seat (F seat), a diamond seat (FL seat), a circular seat (C seat), a boss circular seat (FC seat), and a boss Square seat (FS seat), dark hole seat (PA seat), hanging seat (FA seat). Integral (ie non-separable) vertical housing base, bearing housing with screw fastening. These vertical housing blocks were originally developed as axle boxes for light rail trucks, but can also be used with conventional vertical housing sets. Non-separate vertical housing blocks are more rigid than split housings and some can withstand heavier loads. The outer spherical bearing housing also belongs to the integral seat. Second, split bearing housing Split bearing housing (North China called tile box) is divided into SN200, SN300, SN500, SN600, SD500, SD600, SD200, SD300, SD3000, SD3100, SD3200, SNU500 (SNH, according to the different bearings and shaft requirements. SNV, SNF, SNK, SNG, the same requirements, different companies say differently, referred to as SN series bearing housing. The 722500 series, also known as the SN series housings. The 7225(00) series with flanged housings consists of a housing base with a hole for the shaft and a bolted cover. They vary in size depending on the size. The housing including the size 13 has a triangular base. The bearing housing of size 15 and above has a square base plate. In the form of a base plate, the bearing housing is fixed to the support surface with three or four bolts. The 7225(00) series flanged housings are available for shaft end configurations or through shaft configurations. Third, the sliding bearing The sliding bearing housing is usually a bearing housing that uses bearings instead of bearings and only copper alloys in accordance with the national standards of China. The product series includes H2000, H4000, HXOOO.ZHC200, ZHC400 and other series.
Forging is a workpiece or blank obtained by forging and deforming metal billets. The mechanical properties of the metal billet can be changed by applying pressure to the metal billet. According to the temperature of the billet during processing, the forging can be divided into cold forging warm forging and hot forging. Cold forging is usually done at room temperature, and hot forging is done at a recrystallization temperature higher than that of a metal blank.
The loose of metal can be eliminated by forging. Holes are made to improve the mechanical properties of the forgings.
Usage:
1, general industrial forgings refer to the civil industry, such as machine tool manufacturing, agricultural machinery, farm implements manufacturing and bearing industry.
1, the weight range is large. The forgings are small to several grams to hundreds of tons.
2, forgings for hydrogenerators, such as main shaft and intermediate shaft.
3, forgings for thermal power stations, such as rotors, impellers, retaining rings, etc.
4, metallurgical machinery, such as cold roll, hot roll and herringbone gear shaft.
5, forgings for pressure vessels, such as cylinders, ring flanges and heads.
6, marine forgings, such as crankshaft, tail shaft, rudder rod, thrust shaft and intermediate shaft.
7, forging and pressing machinery and equipment, such as hammer head, hammer bar, hydraulic press column, cylinder body, wheel shaft press mounting machine's prop and cylinder body, etc.
8, modular forging is mainly used for forging dies for hot forging hammer.
9, automotive industry forgings, such as left, right steering knuckle, front beam, coupler, etc., according to statistics, in automobile, forging parts account for 80% of its quality.
10, forgings for locomotives, such as axles, wheels, leaf springs, crankshafts of locomotives, etc., according to statistics, the forging parts in locomotives account for 60% of their quality.
11, forgings for military industry, such as gun barrel, door body, breech bracket and traction ring, etc., according to statistics, forging parts account for 65% of the quality of tanks.
Characteristic:
2, the quality of the casting is higher than that of the casting. The mechanical properties of the forgings are better than those of the castings, which can bear large impact forces and other heavy loads. Therefore, any important and large force parts are used forgings. For high carbides steel, forging is better than rolled steel. For example, high speed steel rolling material (or forging material) can be used only after forging. In particular, the high speed steel milling cutter must be changed.
3, the weight is the lightest. Under the premise of ensuring the strength of the design, the weight of the forgings is lighter than the weight of the castings. This reduces the weight of the machine itself. It is of great significance for the vehicles, aircraft, vehicles and characters.
4, save the raw materials. For example, the crankshaft of the static heavy 17kg used in the car is 189% of the weight of the crankshaft when the rolling material is forged. While the die forging is used, the chip is only 30%, and the machining time is also shortened by 1/6.
Precision forging can not only save more raw materials, but also save more machining hours.
5, high productivity. For example, the use of two hot die forging press forging radial thrust bearings, can replace 30 automatic cutting machine tools. When the M24 nut is produced by the top forging automaton, the productivity of the six axis automatic lathe is 17.5 times.
6, free forging is very flexible. Therefore, forging technology is widely used in some factories to produce various accessories.
Forged Fittings,Pipe Forged Fittings,Steel Forged Fittings,Female Forged Fittings
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