Alloy babbitt
Equivalent
| Grade | analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| B83 | Buy from stock, view availability | ||||
| B88 | Buy from stock, view availability | ||||
| B16 | Buy from stock, view availability | ||||
| BC2 | Buy from stock, view availability | ||||
| BK2C | Buy from stock, view availability |
Technical characteristic
Babbitts are antifriction fusible alloys based on lead and tin. They are a group of fusible alloys with low friction coefficient. The melting temperature ranges from 300 to 440 °C. They owe their name to American inventor Isaac Babbitt. The main purpose is to provide uniform lapping of moving parts in a layer of babbitt cast or sprayed on the bearing liner housing. They are subdivided into:
- tin B83, B88, BV3S (based on tin, copper and antimony) ;
- lead BN, BN16, BSb (lead, copper, antimony and tin);
- calcium BK2, BKA, BK2SH (lead, sodium and calcium).
Advantages of
Reduce significantly the wear of moving parts, which contributes to the longevity of the equipment. The thickness of babbitt layer, applied on the steel liner, determines the reliability of plain bearings. They are characterized by fast running-in to the shaft surface, have high plasticity and ability to retain lubricants. This is achieved by the heterogeneous structure of babbitts, in the soft base of which there are solid particles. The principle of operation is as follows: the rotating shaft rests on the hard particles capable of withstanding high specific pressure, and the soft base, wearing out faster, runs down on the shaft and forms a micro-relief, which retains the grease.
Disadvantages
Babbitt has one drawback - very low fatigue resistance, which greatly limits the performance of the bearing. Babbitt is cast into a bearing that has a steel or bronze housing. The thickness of the babbitt layer poured on the steel liner significantly affects the service life of the bearing - a reduction in the thickness of the layer extends the service life of the bearing.
Use
The most popular alloy options are:
10% copper, 90% tin;
7% antimony, 4% copper, 7% antimony, 89% tin;
15% antimony, 5% tin, 15% antimony, 80% lead;
Copper, antimony, arsenic, nickel, cadmium, tellurium, sodium, calcium, magnesium are used as additives. Tin babbitts with thermal conductivity, wear resistance and high corrosion resistance are used to increase viscosity and achieve minimum friction coefficient. For rolling mill bearings and diesel engines, lead babbitts, which are characterized by higher operating temperatures, are used. Lead-calcium babbitts are used in the bearings of railway vehicles. Calcium alloys can also be alloyed with other elements. Zinc alloys are used to produce cast blanks and various shaped parts by die casting. They are the basis for making bearing solders and alloys.
Melting of alloys based on the above elements is not difficult, but the different components that make up their composition make it difficult to coordinate a single technological melting process. Therefore, the technological process is developed separately for each component.
Supplier
Supplier "Auremo" offers to buy babbitt today on favorable terms. Large selection in stock. Conformity to GOST and international quality standards. Always in stock tin, lead, lead-calcium babbit, the price - the best from the supplier. Buy today. Wholesale customers the price - favorable.
Buy at a bargain price.
Supplier Auremo offers to buy babbitt in bulk or in installments. The stock has the widest selection of products. Always available tin, lead, lead-calcium babbitt, price - due to the technological features of production without the inclusion of additional costs. In this segment, the company "Auremo" - a profitable supplier. The company's website displays the most up-to-date information about the goods, there is a product catalog and price lists. Buy babbit today. Quality meets GOST and international standards. The best price from the supplier. We are waiting for your orders.
