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Alloy babbit

Technical characteristics

Babbit — an antifriction fusible alloys, the basis of which is lead and tin. Are a group of fusible alloys with low coefficient of friction. The melting point ranges from 300 to 440 °C. they owe Their name to the American inventor Isaac Babbitt. The main purpose is to ensure uniform rubbing of the moving parts in a layer of babbit, poured or sprayed on the body of the bearing insert. Divided into:

— tin B83, B88, БВ3С (based on tin, copper and antimony) ;

— lead bn, B16, BSB (lead, copper, antimony and tin);

calcium BK2, BKA, BK2SH (lead, sodium and calcium).

Dignity

Significantly reduce the wear of moving parts, which contributes to the durability of the equipment. The thickness of the babbit layer on a steel liner, determines the reliability of the bearings. Characterized by rapid pererabatyvaemogo to the surface of the shaft, have high plasticity and ability to retain lubricants. Such is achieved due to the heterogeneous structure of babbit, a soft base which has solid particles. The principle of operation is as follows: the rotating shaft is supported on solid particles, able to withstand high unit pressure, and the soft basis faster staling prorabatyvayutsya to the shaft and forms a microrelief, which holds the lubricant.

Disadvantages

Without exception, all babbit have one drawback — very low fatigue resistance, which greatly limits the performance of the bearing. Babbit is poured into the bearing, with steel or bronze body. The thickness of the babbit layer, cast on a steel liner, greatly affecting the duration of the bearings — reducing layer thickness prolongs the bearing service life.

Use

The most popular versions of the alloy:

10% copper, 90% tin;

7% antimony, 4% copper, 7% antimony, 89% tin;

15% antimony, 5% tin, 15% antimony and 80% lead;

As additives are used: copper, antimony, arsenic, Nickel, cadmium, tellurium, sodium, calcium, magnesium. To increase the viscosity and achieve a minimum coefficient of friction used tin babbitwith conductivity, wear resistance and high corrosion resistance. For bearings of rolling mills and diesel engines used lead babbits, characterized by a higher operating temperature. In the bearings of rolling stock of railway transport use lead-calcium babbits. Calcium alloys can be alloyed with other elements. Zinc alloys used for castings and various shaped parts by casting under pressure. Based on them are made of bearing solders and alloys.

Melting of alloys based on these elements is not difficult, but different components that go into their composition, complicate the coordination of a unified technological process of melting. On this basis, the technological process is developed separately for each component.

Supplier

Supplier «Auremo» offers to buy the babbit today on favorable terms. Large selection in stock. Compliance with GOST and international quality standards. Always in the presence of tin, lead, lead-calcium babbits, the price is optimal from the supplier. Buy today. The wholesale customers are price — reduced.

To buy, best price

Supplier «Auremo» offers to buy the babbit in bulk or in installments. The warehouse contains the widest selection of products. Always in the presence of tin, lead, lead-calcium babbits, the price is due to the technological features of production without the inclusion of additional costs. In this segment, the company «Auremo» — the best supplier. On the company’s website displayed the real-time information about products, have product catalog and price lists. Buy Babbitt today. The quality complies with GOST and international standards. The best price from the vendor. Waiting for your orders.

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